2.4 GHz ELRS Module Design

@Mahihassi

As an Electrical Engineer with a Master's degree in Embedded Systems, I possess the perfect blend of skills and knowledge required for your 2.4 GHz ELRS Module Design project. Not only have I excelled in Electronic Design, PCB Layout, and Firmware Development, but I also have vast experience with a wide range of microcontrollers including ESP32 and SX1281 — essential components of your project. My deep familiarity with tools like Altium Designer and KiCad would ensure you get high-quality production-ready Gerber files, ready to be manufactured swiftly by your team. Moreover, I understand the urgency of your project and assure you of my capacity to deliver within your desired timeline. Having previously worked on RF-intensive projects and implemented wireless stacks such as BLE, Wi-Fi, LoRa, Zigbee, complying with the Full ELRS requirements introduces no cause for concern. Diving into your project right from concept to manufacturing-ready files wouldn't be just a task for me; it'd be an opportunity to showcase my expertise.

@MuhammadUzair16

Hi I am an embedded systems engineer with over 16 years of experience. I have extensive experience taking compact RF and consumer-grade products from concept through schematic, controlled-impedance PCB layout, firmware bring-up, testing, and manufacturing release. I can develop the original 2.4 GHz ELRS transmitter and receiver around the ESP8285, SX1281, and TCXO, with careful attention to RF matching, filtering, power integrity, thermal performance, antenna placement, and FPV size/weight constraints. I will also prepare the ELRS pin mapping and reference configuration, an availability-conscious BOM, Gerbers, source design files, and a practical bring-up guide, followed by rapid assistance with your first prototypes. A realistic schedule is 5 days for architecture, component selection, and schematics; 8 days for both PCB layouts and design checks; and 4 days for production files, firmware hooks, and documentation. The remaining time allows for review and refinements. I will assess whether two layers can reliably meet the RF, power, and 0.7 g RX targets before locking the stack-up. Please confirm the required transmitter output power, transmitter-module dimensions/interface, and whether the 100 mW figure applies to receiver telemetry output. Please contact me to discuss details.

@amelectronics

Hello, I can help you develop the complete ExpressLRS 2.4 GHz transmitter and receiver hardware from schematic to production-ready PCB files. I have experience with embedded hardware design, compact PCB layouts, ESP-based systems, and preparing hardware for firmware integration. I will design the schematic, optimize the RF PCB layout, prepare the ELRS pin mapping, and provide the complete manufacturing package, including Gerber files, BOM, Pick-and-Place files, and a bring-up guide. The design will be optimized for compact size, reliable power distribution, and clean routing while respecting the RF requirements. Please share any specific mechanical constraints or preferred components if available. I'm ready to start immediately and can discuss the timeline and project details with you.

@engrusmanfaiz

Hello, I have strong experience in 2.4 GHz RF PCB design, ESP8285/ESP32, and SX1281-based wireless systems, with expertise in impedance-controlled RF layouts, antenna matching, and low-noise mixed-signal design. I can develop both the ExpressLRS transmitter and compact receiver from schematic through production-ready PCB, BOM, Gerbers, and ELRS-compatible hardware mapping, while providing bring-up support during prototype testing. Estimated timeline: Schematic: 5–7 days, PCB Layout: 7–10 days, Manufacturing Package: 2–3 days.

@markoa7

Hi, I'd be excited to help develop your ExpressLRS 2.4 GHz transmitter and receiver from the ground up. This project requires careful RF design, impedance-controlled PCB layout, and seamless ELRS integration to achieve reliable performance in a compact form factor. I have experience designing RF and embedded hardware with ESP32-family MCUs, switching power supplies, and high-speed PCB layouts. My approach is to optimize the RF path, matching network, grounding, power filtering, and antenna layout while keeping the design manufacturable and suitable for a 2-layer PCB where practical. Estimated timeline: **3–5 days** for schematics, **5–7 days** for PCB layout, and **2–3 days** for BOM, Gerbers, and bring-up documentation. A couple of questions: 1. Do you have target RF output, range, or regulatory requirements beyond standard ELRS? 2. Will the transmitter use a standard JR module interface or a custom enclosure?

@tshibsamuel477

Hi there, I read your offer carefully and understand that you need a complete ExpressLRS-based 2.4 GHz transmitter and receiver design from scratch, using ESP8285, SX1281, TCXO, IPEX1 antenna connector, 5 V input, telemetry support, and compact FPV-ready PCB constraints. I can support the RF schematic, component selection, impedance-controlled PCB layout, RF front-end/filtering, clean power design, pin mapping for ELRS firmware, BOM, Gerbers, bring-up guide, and prototype support during first testing. My experience with embedded RF hardware, ESP-based systems, 2.4 GHz PCB layout, compact communication boards, antenna routing, power filtering, and manufacturing-ready documentation fits this project well. I will also ensure the design is original and not copied from an existing board. Just send me a message and we can discuss the exact TX/RX architecture and turnaround time. Best regards, Samuel Tshibangu

@leonidye

Hi, I am very interested in your ExpressLRS 2.4 GHz transmitter and receiver development project. I have extensive experience in RF PCB design, embedded systems, STM32/ESP-based hardware, antenna matching, high-speed digital design, and production-ready PCB development for wireless communication devices. I can develop the complete ELRS hardware from schematic through manufacturing-ready PCB files, including the ESP8285, SX1281 RF front-end, TCXO, power supply, filtering, impedance-controlled RF layout, and optimized 2-layer PCB (where practical). The design will be optimized for compact size, low noise, RF performance, and manufacturability while providing the required pin mapping and firmware hooks for immediate ELRS integration and bring-up. You will receive the complete schematic, PCB source files, Gerbers, BOM with readily available components, assembly files, and a detailed bring-up guide. I will also provide technical support during prototype testing to ensure the hardware performs as expected and assist with any issues discovered during first-article validation. I can begin immediately and would be happy to discuss the RF architecture, target output power, antenna matching, and development milestones before starting. Regards,

@hayat38402

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas:  Antenna Design (CST, HFSS)  Embedded C Programming.  VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI  MATLAB/SIMULINK  Network Simulator NS2/NS3  Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32.  IDEs like Keil MDK V5, ATmel studio and MPLab XC8.  PLCs / SCADA  PCB Designing Proteus, Eagle, KiCAD and Altium  IOT Technologies like Ethernet, GSM GPRS.  HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.

@tetianam8

⭐⭐⭐⭐⭐ Hi, Your ExpressLRS 2.4 GHz transmitter and receiver project matches my background in RF electronics, embedded systems, and compact PCB design. I have experience designing wireless embedded hardware involving RF modules, microcontrollers, power management, mixed-signal layouts, and production-ready PCB documentation. For this project, I can support the complete hardware development cycle: RF architecture design for 2.4 GHz ISM operation SX1281 + ESP8285-based receiver design with ELRS-compatible pin mapping Transmitter module hardware design including RF front-end, PA/LNA considerations, filtering, and power regulation TCXO clock integration and RF layout optimization Controlled impedance RF routing, antenna matching, grounding, and EMI reduction Compact 2-layer PCB layout optimized for FPV weight and size constraints Power stage design for stable 5V input operation and telemetry output requirements BOM selection using readily available components Gerbers, fabrication files, assembly documentation, and bring-up guide Please share your preferred transmitter form factor, output power target, and whether you plan to use the official ExpressLRS firmware stack without modification or require custom features. I look forward to helping bring this ELRS system from concept to prototype.

@yaroslavmark

Hi, I have 12+ years of experience in RF and embedded hardware design, delivering 40+ production-ready PCBs including ESP32/ESP8266, sub-GHz/2.4 GHz wireless systems, compact high-density layouts, and IoT products. I have designed RF boards with controlled-impedance routing, TCXO-based timing, low-noise power supplies, and manufacturable layouts optimized for reliable wireless performance and first-pass bring-up. Approach ✅ I will define the transmitter and receiver architectures, select the RF front-end, ESP8285, SX1281, TCXO, power circuitry, and matching network while ensuring full ELRS hardware compatibility. ✅ I will design compact 2-layer PCBs with controlled RF impedance, optimized grounding, short RF paths, proper filtering, and careful component placement to achieve stable 2.4 GHz performance within the required size and weight targets. ✅ I will prepare ELRS-compatible pin mapping, reference firmware configuration, perform ERC/DRC verification, and deliver editable design files, Gerbers, BOM, bring-up documentation, and production-ready outputs. Questions ✅ Do you have preferred reference hardware or performance targets (range, latency, and receiver sensitivity) beyond standard ELRS compliance? ✅ Should the transmitter module follow a standard JR/Nano module form factor, or is this a completely custom mechanical design? ✅ Is the 100 mW telemetry output required for both the transmitter and receiver, or only for the receiver telemetry link? Best, Yaroslav

@shadabkhan92

With over X years of experience as an Electrical Engineer and a proven track record in electronic design, my team and I have gained extensive proficiency in the field-specific to your project's requirements. We have a deep understanding of the complex tasks involved in creating schematics, selecting RF front-end, MCU, power stage, and filtering systems suitable for reliable 2.4 GHz operation under ELRS requirements. In terms of encapsulating our skillset, our vast knowledge of the ESP8285 and SX1281 chips makes us highly familiar with their functionalities and capabilities. This expertise ensures that we understand the unique peculiarities inherent in using these chips such as signal transmission integrity and accurate data reception - all relevant to your project. Furthermore, having immersed ourselves in working on IoT platforms similar to what you require here, especially with the IoT hardware development side, we're confident about producing prototypes that meet defined specifications.

@danish2051

I am an Embedded Systems and PCB Design Engineer with experience in Altium Designer, Kicad, Easyeda, Protious and custom hardware development. I can design your PCB from schematic to production-ready files, including: • Schematic Design • PCB Layout • Component Selection • Design Rule Check (DRC) • Gerber Generation • BOM Preparation • Manufacturing Support (JLCPCB, PCBWay, etc.) I have experience with ESP32, STM32, sensor interfaces, power supplies, RF modules, Ethernet, and industrial electronics. Please share the project requirements, schematic (if available), board dimensions, and any special requirements. I can start immediately. Looking forward to working with you.

@ihors29

Hi Ali, Nice to meet you again. Your project requires strong expertise in RF hardware, embedded systems, and PCB design, and I can take it from concept to manufacturing-ready files. I'll design both the 2.4 GHz transmitter and receiver, including schematics, component selection, RF front-end, power regulation, filtering, impedance-controlled PCB layout, and ELRS-compatible pin mapping for straightforward firmware integration. The PCB will be optimized for compact size, low noise, RF isolation, and stable operation while respecting antenna placement and RF best practices. Deliverables include complete KiCad project files, production-ready Gerbers, BOM with readily available components, pick-and-place data if required, and a bring-up guide to accelerate prototype testing. I'll also provide support during initial hardware validation and debugging. Estimated timeline: 2 days for schematics, 2 days for PCB layout and review, followed by manufacturing files after final verification. I communicate proactively and deliver hardware that is practical to manufacture, test, and iterate. Best regards, Ihor

@miguelcen64

Hello, I can take this ELRS 2.4 GHz product from concept to manufacturing-ready files, covering both the TX module and ultra-compact RX around ESP8285, SX1281, TCXO, IPEX1, and 5V input constraints. I understand the priority is a clean RF design, true ELRS readiness, fast turnaround, and practical bring-up support. My approach will focus on schematic capture, RF front-end and power integrity, 2-layer feasibility review, controlled RF layout, pin mapping/reference firmware hooks, BOM selection with available parts, Gerbers, and a concise bring-up package for in-house prototyping. I’ll also account for the RX size/weight target and telemetry power goals while keeping manufacturability in mind. Fast iteration during first article bring-up is absolutely part of the engagement. If you want decisive execution and solid RF discipline, I’m ready to start immediately. Best, Miguel

@alluankit01

Hi, I can design the complete 2.4 GHz ExpressLRS transmitter and receiver hardware from scratch, including schematic, RF layout, BOM, Gerbers, pin mapping, and bring-up support. The best solution is to first confirm the exact TX/RX size limits, RF output target, antenna layout, power budget, and ELRS firmware requirements. I’ll then design around ESP8285, SX1281, TCXO, 5V input, IPEX1 antenna, filtering, regulation, impedance-controlled RF routing, and proper grounding/noise isolation for stable 2.4 GHz operation. I’m comfortable with RF PCB design, ESP8285/SX1281 hardware, ELRS-style modules, 2.4 GHz layout, TCXO integration, power stages, antenna matching, compact PCB routing, BOM preparation, Gerbers, and prototype bring-up. Deliverables will include: * TX and RX schematics * Compact PCB layouts * ESP8285/SX1281 integration * TCXO and RF front-end design * 5V power regulation * IPEX1 antenna interface * ELRS pin mapping/reference code hooks * BOM with orderable parts * Gerber and production files * Bring-up and flashing guide I’ll aim for a 2-layer design where RF performance and manufacturability allow, and will clearly flag if a 4-layer stack is safer for reliability. I’ll focus on a clean, lightweight, manufacturing-ready design suitable for fast prototype testing. Best regards Ankit

@ElecHamza

Hi, I can design both the ExpressLRS transmitter and compact receiver unit using the ESP8285 and SX1281 with a TCXO oscillator. I specialize in RF PCB layout, impedance matching, and designing lightweight two layer boards optimized for FPV. You will receive complete schematics, production files, bill of materials, and firmware pin mappings for seamless flashing. I am ready to start immediately and will assist throughout your in-house bring-up phase. Best regards

@Hmdlawal

HI, KINDLY READ THROUGH MY PROPOSAL Your 20x15-20 mm, 0.7 g RX target makes RF layout, power integrity and antenna matching critical on a compact 2-layer PCB. I'm an electronics/PCB designer with 6 years' experience and 67+ completed projects. • Design: ESP8285 + SX1281, TCXO, 5V power, 100mW telemetry, IPEX1 and 50Ω RF paths. • Validate: impedance, filtering, noise and ELRS pin/firmware hooks. • Deliver: TX/RX schematics, PCB, BOM, Gerbers + bring-up guide. I've handled RF/IoT PCB work; relevant samples are in my portfolio. Is 0.7 g including IPEX1? Any TX power target? Let's discuss ASAP.

@rfandelectronics

With over a decade of experience in electronic design in RF and Microwave Circuit, we have developed a profound understanding of the field, which is immensely valuable for your project. We boast specialize in high-frequency PCB design, and our expertise with tools such as KiCad, Proteus, and Altium Designer will certainly help us to optimize your board for low noise and clean RF paths just as you've required. Noteworthy among our proficiencies is our sound experience with Arduino, ESP, C/C++, which is essential for firmware hooks like the ones you're asking for. More than this, given our good rapport with these tools, using the Full ELRS compliance will pose no challenge to us during coding and testing. It's in our DNA to respond quickly without compromising quality. We are confident that we can complete the schematic drawings, PCB layout, first-article files in a period that will meet your deadline and moreover maintain the standard you expect. With our masterful blend of rechargeable battery management systems at a ultra-low current consumption levels solutions, we promise innovative deliverables that'd exceed your requirements. Let Radionica guarantee you an optimized solution - small but mighty enough to operate in line with your frequencies needs even at 0.7g!

@bhargav922002

Hi I am an embedded systems engineer with over 16 years of experience. I have extensive experience taking compact RF and consumer-grade products from concept through schematic, controlled-impedance PCB layout, firmware bring-up, testing, and manufacturing release. I can develop the original 2.4 GHz ELRS transmitter and receiver around the ESP8285, SX1281, and TCXO, with careful attention to RF matching, filtering, power integrity, thermal performance, antenna placement, and FPV size/weight constraints. I will also prepare the ELRS pin mapping and reference configuration, an availability-conscious BOM, Gerbers, source design files, and a practical bring-up guide, followed by rapid assistance with your first prototypes. A realistic schedule is 5 days for architecture, component selection, and schematics; 8 days for both PCB layouts and design checks; and 4 days for production files, firmware hooks, and documentation. The remaining time allows for review and refinements. I will assess whether two layers can reliably meet the RF, power, and 0.7 g RX targets before locking the stack-up. Please confirm the required transmitter output power, transmitter-module dimensions/interface, and whether the 100 mW figure applies to receiver telemetry output. Please contact me to discuss details.