Analogemplois

...plastic molding - Knowledge of mold-making techniques - Ability to create custom designs I have the exact dimensions and specs required for the handle. The design would only have to be for 1/2 of the handle as it would be printed twice to make the whole. In the old days we used to make analog molds from a plug but people have been successful using 3d printing, I just don't have the skills. There are several other minor features which can be discussed later. I've attached a couple photos of a traditional analog handle mold for reference. Overall size of mold would be approx 10"x4"x3" (two pieces) so each piece would be roughly 1.5" thick. I'm unsure the best material for the mold but it must be strong (handle is molded urethane foam under...

...building a fully automated water-pumping system and need both an analog control circuit and a PLC program that work seamlessly together. Scope • Sensing: the design must integrate pressure sensors and level sensors for real-time feedback. • Control targets: the core logic will start/stop pumps and trigger alarms; any additional loads you think would improve reliability can be suggested but are not mandatory. • PLC logic style: I want the software written in a Function Block Diagram format so that future maintenance is straightforward. • Analog backup: alongside the PLC, provide a discrete analog circuit that can keep the pumps running safely if the controller is offline. Deliverables 1. Annotated schematic of the analog circu...

I need an experienced PCB designer for a compact wearable biomedical sensing device intended for chest-mounted physiological monitoring. The board should be based on: * ESP32 / ESP32-S3 microcontroller * ADS1292R ECG analog front end * ADXL355 low-noise accelerometer for SCG sensing * MAX86141 PPG sensor * Battery charging and power-management circuitry * USB-C interface for charging/programming The PCB should target an approximate size of 45 mm × 35 mm while maintaining good signal integrity and manufacturability. Requirements: * 4-layer PCB stack-up * Proper analog and digital partitioning * Low-noise routing for ECG and PPG signals * Clean grounding strategy (AGND/DGND handling) * Proper decoupling capacitor placement * Careful power routing and return-current h...

I need a designer who can translate a clearly luxury vision into a complete analog timepiece. Think clean lines, refined detailing, and a polished metal strap that feels substantial without being bulky. The assignment covers the full concept: dial layout, case geometry, crown, lugs, clasp, and any subtle branding cues that tie everything together. Because this piece will anchor a premium collection, I’d like to see both 2-D sketches and 3-D mock-ups (any modern CAD package or photoreal rendering tool is fine) so I can judge proportions, surfaces, and light play from every angle. Experience with high-end or minimalist watches is valuable, but what really matters is your ability to create something that looks instantly upscale the moment the box is opened. Here’s what I ...

...pre-configured on the board o The sensor will not be present on the board o A 3-wire connection (VCC / GND / Signal) will be provided. 6. Thermocouple Temperature Measurement • The board must include an embedded thermocouple reading circuit. • The measurement range must be suitable for temperatures from room temperature up to approximately 1500°C. • A digital thermocouple reader or a suitable analog solution may be used. • The thermocouple connection must be provided as an external output from the board. • A micro connector with a screw-type clamping mechanism will be mounted on the board for the connection. • The output must be taken from the top of the board. 7. Liquid Valve Outputs • The system contains two liquid valves that operate at...

We are looking for an experienced Freelance PCB Designer to support our ongoing hardware development projects. The ideal candidate should have strong expertise in schematic design, PCB layout, component selection, and manufacturing-ready file generation. ### Requirements: * Experience in multi-layer PCB design * Strong knowledge of analog and digital circuit design * Ability to create schematics, PCB layouts, and Gerber files * Experience with high-speed signals, power management, and EMI/EMC considerations * Knowledge of BOM preparation and component sourcing support * Familiarity with PCB design tools such as Altium Designer, KiCad, Eagle, or OrCAD * Ability to coordinate with PCB manufacturers and assembly vendors * Understanding of DFM (Design for Manufacturing) guidelines ##...

...Pro that now needs a professional mix and master. The priority is bringing the lead vocal forward without sacrificing the track’s energy, then delivering a vinyl-ready master that will translate cleanly to lacquer. Because the song is already registered with ASCAP you will need to sign a standard Non-Disclosure Agreement before I release the multitracks. You are free to use your preferred chain—analog or in-the-box—so long as the work stays inside Logic Pro for full session recall. Please document any outboard settings you print. Deliverables • Mixed Logic Pro session with all processing active or frozen • 24-bit/96 kHz stereo master WAV tailored for vinyl (-6 dBTP, correct side length) • 16-bit/44.1 kHz reference master for general listen...

I'm looking for an experienced circuit designer to create a circuit using ESP32 and TMC5160T. The circuit...app I've already designed. Key requirements include: - Motor Control: Implement TMC5160T for precise motor control. - Sensor Integration: Incorporate various sensors as per the app's requirements(Which is to execute a specific Trajectory given by the user). - Communication Module: Utilize ESP32 for robust communication. Ideal skills and experience: - Strong background in circuit design (both analog and digital) - Proven experience with ESP32 and TMC5160T - Familiarity with app-controlled systems - Knowledge in motor control ( Stepper and Brushless ones with encoders )and sensor integration Please provide samples of similar projects and a detailed approach to...

I'm seeking an experienced music producer to mix and master a 130 ukg style track. The ideal candidate should have a strong background in ukg or drum and bass music and be able to deliver a warm, analog sound. Key requirements: - Expertise in mixing and mastering - Proficiency in ukg or drum and bass genre - Ability to achieve a warm, analog sound Please provide samples of similar work.

I need a Python/Arduino developer to create the code for an Adafruit RP2040 CAN board. The board will take in an analog voltage and output to a CAN based device. Key Requirements: - Converts 0-5V analog signals into CAN-based messages. - Convert can messages coming in and rebroadcasting to a different address - Broadcast status and wake messages to device being controlled. Ideal Skills & Experience: - Proficient in Python and/or Arduino and familiar with Adafruit Feather ecosystem - Experience with CAN protocols and message formats

...SPI) and signal integrity preservation, who can start immediately. The board at a glance: - STM32H753ZI MCU (Cortex-M7, 480 MHz) + flash + USB serial - 14 high-speed analog inputs (~300 kHz range) from precision sensors (mix of bipolar and single-ended in the low-volt range) - 14 analog outputs (mix of ±10 V differential and ±10 V single-ended for driving external actuators) - External high-speed SPI ADC and DAC (you will pick these to read from analog sensors and perform analog output) - Single 12 V or 24 V DC input, on-board regulation including ±15 V analog rails Multi-layer PCB, mixed-signal best practice (analog/digital separation, planes, controlled impedance where needed) - Anti-aliasing front-end on every inpu...

precision Track Glucose Monitoring System Fu...biosensor with stable electrochemical detection Compact wearable design built on advanced PCB architecture Bluetooth Low Energy (BLE) connectivity for seamless data transfer Mobile interface with alerts, trends, and data tracking Designed for scalable, cost-efficient manufacturing System Highlights Accuracy & Reliability: Engineered to meet medical-grade performance expectations through optimized analog front-end circuitry and signal integrity design Rapid Prototyping Capability: PCB-focused development allows fast iteration and customization for different applications Low Power Design: Efficient power management supports extended use per sensor cycle Flexible Integration: Modular design enables expansion into broader wearable or cl...

...fabrication-ready PCB layouts with an up-to-date bill of materials. The circuit blends low-noise analog front-end blocks with a modest-speed digital section driven by a microcontroller, so proven experience balancing analog performance against digital switching noise is essential. I expect all design work to be done in a mainstream tool such as Altium Designer, KiCad, or Cadence OrCAD/Allegro—whichever you are fastest with—while simulations can run in LTspice, PSpice, or an equivalent platform. Deliverables • Annotated schematic (PDF + source) • PCB layout files and Gerbers/ODB++ • BOM with manufacturer part numbers and current availability • Simulation results that verify critical analog and digital performance metrics ...

Project Details $10.00 – 20.00 USD I need my existing OBS scene for a YouTube Live stream from Putrajaya Lake upgraded with four real-time overlays: • Time • Date • Current weather • A title that shows the channel name The clock must appear in a clean analog style, matching the calm outdoor setting of the lake. The channel-name title can sit unobtrusively in another corner. I am flexible on how you source the weather data—as long as it is reliable and updates automatically, feel free to choose the API you know best. Please deliver: • A ready-to-import OBS scene collection (or clearly documented filters and browser sources) with all four overlays positioned and styled. • Any custom graphics or CSS you create. • A s...

I'm looking for a skilled sound designer to create a set of credible p...(Bryan Adams), 'From This Moment On' (Shania Twain), 'Sweet Inspiration' (King Curtis), 'Wooly Bully' (Sam the Sham), 'Whiter Shade of Pale' (Procol Harum), and similar. Requirements: - Combo patches for cover songs: synth, piano, and organ - Emulation of classic analog synths for synth patches, including strings - Any type of piano sound (grand, electric, or upright) you deem appropriate - Organ patches if needed Ideal Skills and Experience: - Expertise in sound design, particularly with Nord keyboards - Strong knowledge of classic analog synth sounds - Experience creating diverse and versatile keyboard patches - Ability to deliver high-quality, professiona...

...a punchy but not over-compressed finish. Here’s how I picture the collaboration: • Recording – guide and capture live guitars, bass, vocals, and drums (real or expertly programmed), ensuring each track lands with the right tone and energy. • Mixing – craft balanced, dynamic mixes that keep the vintage character while adding modern clarity; preferred tools are Pro Tools or Logic with premium analog-style plug-ins. • Mastering – deliver final stereo masters that translate well across streaming, radio, and vinyl-style playback with competitive loudness and no loss of warmth. I’m ready to share rough demos, tempo maps, and arrangement notes right away. If you have a strong ear for classic rock, a proven recording workflow, and can d...

I need an experienced audio and video engineer to integrate systems for an 8-11 24 foot Mobile Production Truck with 6 to 7 work stations. Key Tasks: - Some Equipment installation and wiring, networking... - Blackmagic Design gear Software setup and configuration - Review and a little redesign of truck stations (e.g., Director, TD, DIY, Slo-mo) - Graphic...networking... - Blackmagic Design gear Software setup and configuration - Review and a little redesign of truck stations (e.g., Director, TD, DIY, Slo-mo) - Graphics and sound sit and work... Ideal Skills & Experience: - Strong background in audio and video integration - Experience with professional studio setups - Familiarity with production truck operations - Proficient in digital and analog audio and sou...

...tech-focused—blending analog hardware (Moog/Sequential vibes) with a gritty, professional industry edge. I have existing base artwork (attached) and need a freelancer to expand this into a cohesive visual campaign. The Vision The kit represents "$100k worth of game." Every sound was processed through world-class analog gear to ensure industry-placement quality. The visuals should scream "high-fidelity," "analog warmth," and "expensive sound." Scope of Work I need variations and marketing materials based on the provided "Cookup Kit" and "Dat Shhh Dope" artwork, including: Social Media Banners: Sizes optimized for Instagram (1:1 and 9:16 Stories), X/Twitter, and YouTube, google ads etc etc Promo &quo...

...directional tilt sequence using ball-type tilt switches with RC debouncing Onboard timing circuits (~10 sec startup delay, ~60 min auto-shutoff) Continuity test circuit for the user-attached output device LED status indicators (red/green/blue) N-channel MOSFET output switch rated ≥1A Snap/spring-terminal connectors for all external connections What We're Looking For: Proven experience with analog/discrete logic circuit design and PCB layout (KiCad or equivalent) Demonstrated ability to design for low cost at moderate volumes (500–1,000 units) (This contract is specifically for prototyping, not low-to-moderate volume production) Familiarity with CMOS logic families and timing circuits built from discrete components Experience with tilt/inertial sensors an...

...should be simple and early-1960s accurate - Gantry/tower should be narrow and minimal, not a huge Saturn V-style tower VIDEO STRUCTURE — 30 SECONDS: 0–5 seconds: Black screen or slow fade-in with radio static / low rumble. Text appears: “MERCURY PROGRAM” “Humanity’s First Step Into Space” 5–10 seconds: Close-up of engineers and technicians working around the rocket base or capsule. Show cables, analog equipment, hard hats, white shirts, and 1960s launch preparation atmosphere. 10–16 seconds: Mercury-style capsule being lifted or positioned near the top of the rocket, or a slow cinematic shot of the rocket and gantry at sunrise. 16–23 seconds: Wide shot of the Mercury-Redstone rocket standing on the launch pad with l...

...ferromagnetic core trace its B-H hysteresis loop live on an oscilloscope screen. All measurements will be taken with my Waveform (Analog Discovery) unit acting as both function generator and two-channel scope, so please design everything around that platform and its WaveForms software. The job breaks down into a few concrete tasks: • Circuit: create a schematic and breadboard / PCB layout that injects a ± triangular current through the test inductor, senses the magnetising field (H) via a precision series resistor, and produces the flux density (B) signal with an RC integrator. Component values should keep signals comfortably within the ±5 V input range of the Analog Discovery. • Instrument setup: provide the exact WaveForms configuration—c...

...interface * Precision timing and current control The system will be controlled via a microcontroller (ESP32 or equivalent) and connected to a Windows 11-based mini computer for UI processing. Core System Requirements (High-Level) 1. Power Management Subsystem * Input: 22V battery (approx. 2500 mAh) * Regulated outputs: * 3.3V (MCU & logic) * 5V (peripherals) * 12V (drivers) * 15V (analog/control stages) * Efficient DC-DC topology (buck/isolated as required) * Protection: OVP, OCP, thermal considerations ⸻ 2. Digital Control System * MCU: ESP32 (or equivalent high-performance MCU) * PWM-based control interface for high-voltage driver stage * Adjustable parameters via UI: * Voltage control (scaled control domain) * Current control (low-current pr...

...Reference tracks that capture the sound I’m after • Any loudness targets or special format requirements up front What I need back: • A mastered 24-bit WAV at –14 LUFS (or your recommended spec for the style) • A high-quality MP3 for quick sharing • A brief report of the processing chain you used so I can learn from the process I’m open-minded about the exact tools—whether you prefer an analog chain, in-the-box solutions such as iZotope Ozone, FabFilter, or a hybrid setup—so long as the end result hits the mark sonically. When you send your proposal, please walk me through: • Your typical mastering workflow • The key pieces of gear or software you rely on • Turnaround time for a single track and any opti...

...Multi-rail power management * Digital control system * High-voltage generation architecture (conceptual + control side) * Touchscreen UI interface * Precision timing and current control For HV use different board DIODE & Capacitor multiplier until 100 KV stages The system will be controlled via a microcontroller (STM32H743VIT6 + ADC eksternal ADS127L11 / AD7768 / ADS131M08 or FPGA ARTIX 7, there is analog from Photo Multiplier Tube , amplified with low noise and then to noise pass filter then integer before to high speed adc minimum 16 bit ) and all graphic connected to a Windows 11-based mini computer for UI processing. Your task only give rawa output from microcontroller related voltage, current and exposure time precision. Otherwise windows software will be done from our...

...Bus Tracking and Fuel Monitoring System is a smart transportation solution designed to monitor the live location and fuel usage of buses using GPS technology and sensor integration. This system uses a GPS tracking device installed inside the bus to collect real-time data such as latitude, longitude, speed, and ignition status. Additionally, a fuel sensor is connected to the GPS device through an analog input to measure fuel levels continuously. The collected data is transmitted via a SIM network using TCP/IP protocol to a Java-based backend server. The backend system processes incoming data packets, extracts relevant information, and stores it in a database. The frontend application, built using JavaScript, integrates with routing services like OSRM (Open Source Routing Machine) ...

I need my existing OBS scene for a YouTube Live stream from Putrajaya Lake upgraded with four real-time overlays: • Time • Date • Current weather • A title that shows the channel name The clock must appear in a clean analog style, matching the calm outdoor setting of the lake. The channel-name title can sit unobtrusively in another corner. I am flexible on how you source the weather data—as long as it is reliable and updates automatically, feel free to choose the API you know best. Please deliver: • A ready-to-import OBS scene collection (or clearly documented filters and browser sources) with all four overlays positioned and styled. • Any custom graphics or CSS you create. • A short setup note so I can adjust colours, fo...

I’m developing a small (35x45mm) (10 IC) 6-layer mixed-signal board that will sit inside a handheld medical device, and I already have a first-pass KiCad schema...Produce all manufacturing outputs—Gerbers, drill files, pick-and-place, and a BOM tied to realistic lead times. Acceptance The design will be considered complete once it loads error-free in the latest public KiCad release, passes all DRC/ERC tests I provide, and the Gerbers drop straight into JLCPCB’s viewer without red flags. If you have a track record with mixed-signal KiCad boards and ST Micro/Analog Devices components in regulated environments, I’d love to work with you. I will have follow-up projects for debugging and writing firmware for the same project, and if this works out a couple mo...

...powered by a standard USB phone charger near the thermostat Parts: I am happy to purchase parts based on your recommendation, or you can supply them and invoice me. Expected parts: 2x ESP32 dev boards, PC817 optocoupler, 1kΩ and 10kΩ resistors, 5V single-channel relay module, breadboard or stripboard, short hookup wire. Skills required: - ESP32 / Arduino IDE development - ESP-NOW protocol - Basic analog electronics (optocoupler interfacing, 24VAC signal reading) - Relay module wiring - Ability to explain the finished build clearly to a non-expert Please include in your proposal: - Any similar projects you have built (HVAC control, relay switching, ESP-NOW or similar wireless links) - Your rough timeline - Whether you would supply parts or prefer I source them - Fix...

I need exact copies of existing plastic joystick controllers for wheelchair control. The joysticks are not of the digital, analog, or arcade style. Requirements: - Exact replication of current design - Joystick housings are plastic clam shell styles that are screwed together Ideal Skills: - Experience with plastic molding or 3D printing - Proficiency in creating precise replicas of existing designs - Familiarity with joystick mechanics and functionality Please provide samples of previous similar work.

...diagnostic tools and the TCU. • Freelancer Obligation: The freelancer must analyze the logs and implement the Checksum/CRC calculation logic and Rolling Counter for all data packets transmitted to the TCU. 3. Technical Specifications A. Hardware Integration & Control • Controller: Teensy 4.1 (or equivalent). • Actuation: Control of a 3-phase AC Motor via a VFD using Modbus RTU (RS485) or 0-10V Analog. • TCU Communication: * Physical Layer: High-speed CAN-Bus (500 kbps) with mandatory $120 Omega$ termination. o Transport Protocol: ISO-TP (ISO 15765-2). o Application Protocol: UDS (ISO 14229). • Protection: Implementation of Galvanic Isolation for CAN and USB interfaces to protect the host PC. • Power & Speed Monitoring: * Monitor 12V supply v...

I have a Delta DVP-Series PLC on site and need a complete process-control program written and ready to load. The controller will be the heart of the system, managing valves, pumps and a few analog loops, so stability and clear documentation are essential. Your task is to develop, test and hand over a fully functional ladder (or structured text, if you prefer) application that meets these goals: • Control logic for the entire process, including safe start-up, normal run, alarm handling and orderly shutdown • Parameterisation of all analog inputs/outputs and PID blocks where required • Clear tag naming that follows the P&ID references I will supply • Commented code and a concise commissioning guide so my technicians can maintain the program aft...

I’m putting together a presentation for a new bar fit-out and need a single, photo-real style visual of the complete analog sound system we’re proposing. I will give you a definitive list of components—turntables, pre-amps, mixers, amps, rack gear, speakers and any cabling or racks that should appear—so you can lay them out exactly as they will sit on the back-bar and shelving. The look must feel clean and modern while still clearly showing it is an analog rig. Think realistic lighting, believable materials and textures on brushed metal, wood veneers and fabric grilles, but keep the level of detail moderate so the image remains presentation-friendly instead of engineering-heavy. Primary use: on-screen presentation display (large TV and projector), so...

I am looking for an experienced hardware design engineer to develop a production-grade industrial controller PCB based on the ESP32-S3. This is not a hobby project. The expectation is a robust, industrially reliable design with proper isolation, analog accuracy, and manufacturability in mind. A detailed Hardware Requirement Document (HRD) is already prepared and will be shared as the baseline reference. The scope is well thought through, but I expect the freelancer to actively review, challenge, and refine the design where necessary. What This System Does The system is an industrial measurement and control device with the following capabilities: * Sensor acquisition (Pressure + Temperature + Humidity via I2C and SPI) * Continuous 4–20 mA output (primary, always active) * ...

I am looking for a highly experienced embedded + analog design engineer to develop a high-precision sine wave generation system with real-time USB control. This is a result-driven project focused on delivering a working, validated prototype, not just schematics. System Requirements 1. Sine Wave Generation DDS-based solution (e.g., AD9833 or better alternative – developer may choose) Frequency range: up to ~10 kHz (focus on stability, purity, low distortion) Proper analog filtering required (low-pass) 2. Amplitude Control Controlled via DAC (e.g., MCP4822 or equivalent – developer may choose) Adjustable via PC interface (not continuously dynamic) Stable and calibrated output expected 3. Offset Control (Critical Feature) Real-time adjustable DC offset via USB inter...

...took an 80s-inspired, Alien-franchise synthwave track all the way to the finals of the UK Songwriting Competition’s retro category—despite the fact it had no vocals at all. I believe it could have gone even further with the right singer. The instrumental mix is locked, the lyrics are fully written, and the overall mood leans dark and haunting. I need a male vocalist who can cut through layers of analog synths. You’ll receive: • The full instrumental mix • A lyric sheet • If required a synth melody and rhythm guide track What I need from you: High quality, professional vocals from the perspective of a trapped Marine about to face the ultimate predator. Ability to leave your own mark on this song. Drop me a link to something where yo...

...copper). Bottom layer as ground pour. Trace widths: Power traces (+12V, DRAIN, GND power): ≥1mm (40mil) Signal traces (SPI, gate drive): 0.25mm (10mil) is fine USB/5V input: ≥0.5mm Layout rules: C4 (100nF) must be within 5mm of TC4420 pin 6 (VDD) Keep L1, L2 physically separated from AD9833 module to avoid EMI coupling Star-ground topology preferred — all GNDs meeting at one point near J1 Separate analog ground (AD9833 AGND) from digital/power ground with a thin trace bridge Transducer pads (T1, T2) on board edge, angled 30–45° apart for wider coverage 4× M3 mounting holes at corners Silkscreen: component references, polarity marks, "5V IN", "ON/OFF", "T1", "T2" labels Fiducial marks for alignment if using pick-a...

...integrated carrier board as detailed in the schematic. The project now incorporates: Power Distribution: Multi-rail power supply design with specialized protection and regulation circuits. Isolated Industrial Interfaces: Multiple isolated RS485 channels using ISO7221 digital isolators and THVD1426 transceivers, requiring careful split-ground and isolation barrier management. Analog I/O Protection: Extensive analog input and output stages with LM2904 op-amps, MCP4728 DACs, and multi-stage TVS/Zener protection circuits. Relay & Control Logic: A 12V relay control bank driven by SN74HC595 shift registers and ULN2003 darlington arrays, requiring trace width considerations for switching currents. Audio & Multimedia: Class-D amplification using PAM8320, digital poten...

...stepper motor and continuously outputs position data over serial communication. Specifically, it transmits time and position in a comma-separated format as “time_ms, position_mm” at approximately 50 millisecond intervals. This output has already been verified to function correctly using the Arduino Serial Plotter which I wrote the code for. Also, a DAQ system within LabVIEW is used to measure the analog voltage output from a load cell. This voltage represents the sensor signal and does not need to be converted to force at this stage. The DAQ portion of the system is already operational and capable of independently acquiring and displaying voltage readings. The goal is to combine these two data streams within a single LabVIEW VI. The VI should continuously read incom...

...suit ports and wired connection points * a couple of coiled wires connecting waist to thigh * short overskirt or structured thigh panels to create a technical field-kit look * old-school slide rule or retro analog tool tucked into vest * glasses are precise and part of the overall geometry He should feel like a person who labels cables. Important: unlike Sheena’s gear, Justin’s tools should be **organized and intentional**, not ruggedly piled on. Good identifiers: * clean utility vest * visible ports and cable routing * square scanner holster * measuring tools * slide rule / analog instrument detail * exact, tidy placement of every attachment Her silhouette should read: **narrower, layered at chest and thighs, technical and deliberate** ## Ronaldo –...

I new to design a PCB dedicated to processing several signals and starting a device based on a set number of conditions. I would like to be able to modify those parameters from a cloud based or simple web interface. The board should handles both analog and digital. I expect all to be digital signals but just in case. It should basically handle, temperature, humidity and time of day. Deliverables 1. Compiled firmware binaries plus full, buildable project files 2. Clear inline comments and a concise README explaining build steps and pin mappings 3. A short test report that documents signal-integrity measurements and confirms the module meets the agreed specs. 4, Plus device recommendation and also help on setting up. I have an idea, but I am a genetic engineer. I am OK wi...

...4 digits, driven by MAX7219) or an SPI-based TFT display (only one option active at a time). Communication interfaces include isolated RS485 with Modbus support, UART for serial communication, SPI for display, SD card, and DAC, and I2C for sensors and expansion. Data storage is handled via external EEPROM and an optional SD card for extended logging. The system includes provision for DAC-based analog outputs (4–20 mA and 0–10V), with final component selection based on industrial accuracy requirements. Power is supplied via 24V DC input, internally regulated to 5V and 3.3V. The overall design is modular, configurable, and suitable for robust industrial deployment with expandable I/O and reliable power architecture. Here’s a tight, professional Scope of Work para...

...simple drive circuit (MOSFET or similar) Include a precision current measurement (sense resistor + output) Provide outputs for monitoring the current waveform Ensure it works with short pulses (~1 ms) Deliverables Fully assembled working device Basic wiring schematic Documentation of coil size, number of turns, and how to calculate the magnetic field Budget: $750 to $1.5K Preferred Experience: Analog electronics or instrumentation Coil design or electromagnetic systems Notes This is for a research setup, so accuracy and clear documentation are more important than appearance or complexity....

...system requirements. The circuit will include multiple FSR sensors (Force Sensitive Resistors) for plantar pressure sensing and an IMU sensor for gait/motion tracking. Select and integrate suitable supporting components such as microcontroller, BLE communication module, power management circuit, battery charging unit, connectors, and signal conditioning circuits. Ensure proper sensor interfacing, analog signal acquisition, filtering, and calibration provisions in the schematic design. After schematic approval, develop a compact, optimized PCB layout suitable for wearable insole integration with size and flexibility constraints in mind. PCB must be designed for low power consumption, stable sensor data acquisition, and reliable wireless communication. Deliverables should include: ...

I already have firmware running on an ESP32-based board that includes an RJ45 RS-485/UART port, two analog inputs, several digital I/Os and a small audio stage that automatically answers a SIP/VoIP call and plays audio through an on-board speaker. What I need now is an elegant extension of that code so the same board can also feed data to– and receive commands from – an IoT dashboard app. The new build must keep every existing VoIP feature intact while adding: • A clean, non-blocking interface between the VoIP tasks and the new IoT task set. • Support for both voice playback and tone generation exactly as the current audio path provides. • Reliable sampling of the two AIs along with any DI events, packaged for MQTT/HTTP (whichever you find lighte...

I’m refining a set of custom boards that combine an FPGA-based signal generator with several ESP32 modules. The immediate gap is in analog and digital circuit design: I need a fresh set of eyes to review, debug, and improve the front-end and conditioning stages so our multi-channel waveforms stay clean from kHz up into the low-MHz range. You will also find yourself touching the programmable logic; I use both VHDL and Verilog, so fluency in either (or ideally both) is welcome when tweaks to the signal-generation core are required. On the microcontroller side each ESP32 handles data processing, manages communication protocols, and drives attached peripherals, all written in C/C++. Expect to dive into that firmware whenever hardware changes ripple upward. Key objectives &...

...throughout: clearances, trace widths, copper pours, silkscreen legibility, and all the usual checks that guarantee a smooth hand-off to any mainstream fab house. The board carries an ESP32 module, its accompanying power-management stage (regulators, protection, filtering), plus several sensors and small actuators. Placement should reflect good RF practice around the ESP32 antenna while keeping analog and noisy digital sections apart. I will supply: • the schematic (KiCad or PDF) • component datasheets and footprints when they are not in the KiCad default libraries You will return: • the complete KiCad project folder • Gerber, drill, and pick-and-place files ready for upload to JLCPCB or similar • a concise BOM and rendering so I can double-c...

...Acquisition Software a. All Digital and Analog parameters shall be acquired by the system at 50 msec. Data to be stored in controller hard disk and in server in text format. System shall be capable to acquire continuously for duration of 5 hours or more. b. The acquisition software shall be capable of being operated with acquisition ON/OFF & file writing ON/OFF features. c. The acquisition software shall be capable of being operated in monitoring mode and data logging mode. d. Software shall have capability to store all events, operator actions, process alarms with their description, occurrence time and priorities and print out of the same on demand. e. Data updation in SCADA within 1 sec. f. System shall have provision to acquire at different sampling rates for analog...

...Outputs: RS485, 4–20mA, and 2 relay outputs Use relay outputs for HIGH and LOW level detection Level & Temperature Sensor (FXW-SWPSG) 4–20mA analog output Tank range: 0 to 1.2 meters Outputs: Vacon 20 VSD Digital RUN/STOP control Analog speed reference (0–10V or 4–20mA depending on configuration) Control Logic Required: If LOW level is detected → start pump If HIGH level is detected → stop pump Use hysteresis (low/high relays) to prevent rapid switching Include Auto and Manual modes: Auto: controlled by sensors Manual: operator start/stop from HMI HMI Requirements (Kinco DTools): Clean, user-friendly screen design Display: Tank level (meters and %) Raw analog input value Pump running status High level / Low level status Fa...

...Time • Alarm Time • Pressure Setpoint (Pa) ________________________________________ Monitoring on HMI • Real-time Pressure (Pa) • Door Status (OPEN/CLOSE) • System Status ________________________________________ HEPA Differential Pressure System • Sensor: MPXV7002DP (low cost) • Type: Dual port (2 pipe connection) Connection: • Port 1 → HEPA chamber • Port 2 → Outside air Signal: • Analog output (0–5V) → MCU ADC ________________________________________ Alarm Conditions • Pressure below setpoint → Alarm • Both door open attempt → Alarm • Door open too long → Alarm Action: • Buzzer ON • Warning on HMI ________________________________________ Additional...

...Time • Alarm Time • Pressure Setpoint (Pa) ________________________________________ Monitoring on HMI • Real-time Pressure (Pa) • Door Status (OPEN/CLOSE) • System Status ________________________________________ HEPA Differential Pressure System • Sensor: MPXV7002DP (low cost) • Type: Dual port (2 pipe connection) Connection: • Port 1 → HEPA chamber • Port 2 → Outside air Signal: • Analog output (0–5V) → MCU ADC ________________________________________ Alarm Conditions • Pressure below setpoint → Alarm • Both door open attempt → Alarm • Door open too long → Alarm Action: • Buzzer ON • Warning on HMI ________________________________________ Additional...