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I am building an integrated volt-ampere meter that also serves as a protection and control module for a pump system. The unit must: • Measure voltage and current accurately while reacting instantly to high/low-voltage and over/under-current conditions (these three protections are the top priority). • Manage a water-level subsystem that reads three stainless-steel probes plus one flow sensor, then drives two relays—one energises the starter circuit, the other keeps the motor running. Scope of work 1. Circuit and PCB: create the full schematic around a MindMotion MM32G0001A1T (or any other MM32 in the same family so our inventory stays unchanged), layout a compact single-board solution, and specify a CC display already stocked in-house. 2. Firmware: write clean, well-documented code that handles measurement, protection logic, probe sensing, flow-rate interpretation, relay timing and user indications on the CC display. 3. Hand-over: deliver schematics, BOM, PCB Gerbers, pick-and-place, compiled hex, full source, and brief production test procedures so I can program and deploy the boards without reverse-engineering anything. Acceptance The assembled prototype should: – Trip within the specified thresholds for voltage and current; – Halt the motor on dry-run or low-water; – Recover gracefully when values return to the safe band; – Drive the starter relay for the required soft-start window, then latch over to the run relay. I want the circuit and firmware phases tackled first, followed by display fine-tuning. If you have the expertise to take the project from schematic to working code and are comfortable with MindMotion MCUs, let’s move
Project ID: 40651290
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Active 5 days ago
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8 freelancers are bidding on average ₹8,377 INR for this job

Hi, I can design the volt-amp controller with pump protection, water-level sensing, flow sensing, relay control, schematic/PCB, and firmware around the MindMotion MM32G0001A1T or same MM32 family. My approach will be to first confirm voltage/current range, sensing method, trip thresholds, relay timing, probe logic, flow sensor type, CC display model, and power supply needs. Then I’ll prepare the circuit, compact PCB, BOM, and firmware logic for measurement, protection, probe sensing, flow detection, relay sequencing, display indication, and safe recovery. I’m comfortable with embedded hardware, MM32/ARM MCU firmware, voltage/current measurement, relay control, pump protection, dry-run detection, PCB layout, circuit design, automation logic, and production handover files. Deliverables: * Complete schematic * Compact PCB layout * BOM * Gerbers and drill files * Pick-and-place files * Firmware source code * Compiled HEX * Protection logic * Relay timing logic * Display indication support * Production test notes I’ll focus first on reliable high/low voltage, over/under current, dry-run/low-water protection, and safe starter-to-run relay handover. Best regards Ankit
₹5,000 INR in 1 day
4.2
4.2

I can handle the complete circuit and firmware development around the MindMotion MM32 family, including accurate V/I measurement, fast protection logic, water-level/flow sensing, relay sequencing, and CC display control. I’ll deliver the schematic, PCB design, BOM, Gerbers, pick-and-place, compiled HEX, full source code, and production test procedure. I recommend starting with the circuit and firmware as requested, then fine-tuning the display. Ready to discuss the exact thresholds, sensor ranges, relay timing, and stocked display model.
₹10,000 INR in 3 days
4.1
4.1

The fastest way to guarantee instant protection is to put the voltage and current comparators in hardware before the MCU reads them. I'll design the analog front end with fast comparators and connect them to the MM32 interrupt pins. The firmware will monitor those interrupts and drive the two relays in under a few microseconds. A common mistake is letting the stainless probes float when power is off, which often triggers false dry-run trips. I'll add a pull-down network and debounce logic so the water-level check only runs when the pump is energized. You can expect the prototype to trip on voltage or current limits, stop on low water, and recover smoothly once conditions normalize.
₹7,000 INR in 3 days
1.9
1.9

I've shipped production firmware and PCB layouts for industrial control boards before and have solid experience with ARM Cortex-M0 MCUs like the MM32 family. I'll handle the complete pipeline: schematic design around the MM32G0001A1T with voltage/current sensing front-end, protection thresholds locked in firmware, water-level probe signal conditioning, and dual relay driver stage. Firmware will be interrupt-driven for instant fault detection, with clean probe debouncing logic and soft-start timing on the starter relay. I'll deliver full schematics, BOM, Gerber files, hex binaries, commented source code, and a one-page test procedure so your production team can flash and validate without guessing. The display integration will be tuned once the core protection logic passes your dry-run and low-water trip tests.
₹1,515 INR in 4 days
0.0
0.0

I can handle the complete circuit and firmware development around the MindMotion MM32 family, including accurate V/I measurement, fast protection logic, water-level/flow sensing, relay sequencing, and CC display control. I’ll deliver the schematic, PCB design, BOM, Gerbers, pick-and-place, compiled HEX, full source code, and production test procedure. I recommend starting with the circuit and firmware as requested, then fine-tuning the display. Ready to discuss the exact thresholds, sensor ranges, relay timing, and stocked display model.
₹7,000 INR in 7 days
0.0
0.0

I appreciate your detailed project description and can completely relate to your need for a precise and reliable volt-amp controller with robust safety features. I am Neha, an automation specialist with ample experience in web and mobile app development that has honed my skill of transforming ideas into functional solutions - a trait that will prove invaluable for your integrated meter project. My expertise extends to Android, iOS, Java, PHP5, .NET as well as HTML/HTML5/CSS/Responsive Design so handling the MindMotion MM32G0001A1T or any other MM32 board to deliver a high-performing, compact PCB solution will not be a challenge. Furthermore, my proficiency in writing clean and well-documented code is just what you need for the essential firmware that not only measures voltage and current accurately but also drives your entire pump system effectively. I am confident in my ability to handle the water level subsystem and deliver functionalities that not only meet but exceed your safety expectations by promptly reacting to low/high voltage and under/overcurrent conditions. My commitment doesn't end at delivering successful schematics, BOMs or compiled hex; I ensure seamless post-implementation support which includes sharing comprehensive production test procedures so you are comfortable programming and deploying the boards right away. By choosing me, you're getting not just domain expertise, but also reliability, value for money, and the peace of mind kn project
₹17,000 INR in 7 days
0.0
0.0

I've built current-protection systems (eFuse-based protection on a rover control board) and relay/motor-driver control for a rover platform, so voltage/current sensing, trip logic, and relay sequencing map directly onto work I've already done. MM32 specifically is new to me, but it's a Cortex-M0 part like others I've worked with, the peripheral set (ADC, timers, GPIO) is the same territory as STM32. What I'll deliver: Schematic + compact PCB around the MM32G0001A1T, sized for your CC display Firmware: V/I measurement, protection logic (trip/dry-run/recovery), water-level + flow sensing, relay timing/latching Full handover: schematics, BOM, Gerbers, pick-and-place, compiled hex, source code, test procedures Can start on the circuit + firmware phases first as you outlined, display fine-tuning after. [X] days turnaround.
₹2,500 INR in 7 days
0.0
0.0

Gurdaspur, India
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Member since May 4, 2026
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