PMDC Motor Driver — Design & Prototype with Rotation Control via Proximity Sensor

@ahmedy607

Hi, You can see in my portfolio that I’ve worked extensively with ESP32/STM32-based embedded systems, motor control hardware, and custom PCB design, including power electronics and closed-loop control applications. For this PMDC driver, I can design a robust 24V H-bridge solution with PWM speed control, current limiting, back-EMF protection, and proximity-sensor feedback for accurate rotation counting and automatic stop control. I can also handle the full workflow including schematic, PCB layout, firmware, BOM, Gerbers, and prototype validation. I typically use STM32 or ESP32 depending on timing and control requirements, and I can recommend the best option after reviewing the motor and sensor details. I’d be happy to discuss the topology, protection strategy, and estimated timeline in more detail. Best regards, Ahmed

@Webslinger01

I have hands-on motor control and embedded systems experience — including a deployed line-following robot with real-time sensor-driven motor control, closed-loop correction, and proximity-based decision logic. PCB design, motor driver circuits, and embedded C firmware are all within my regular workflow. Answering your three required questions: • Topology: discrete N-channel MOSFET H-bridge with IR2104 gate drivers — handles 24V/10A continuous cleanly, built-in dead-time prevents shoot-through, bootstrapped high-side drive, current sense shunt on low side for adjustable limiting • MCU: STM32F103 — hardware PWM at 10–20kHz on dedicated timers, external interrupt for proximity pulse counting (no missed counts), sufficient flash for clean closed-loop firmware • Timeline: Day 1 — schematic + PCB in KiCad; Day 2 — firmware + prototype build + test; Day 2 end — rotation accuracy test report + video demo I have motor driver components in my lab and will build and test the prototype on real hardware before delivery. Once validated, I will ship the assembled prototype to you. Is the proximity sensor already selected, or should I include an inductive NPN sensor in the BOM?

@ThynkLoop

Hi, I can help you design and develop the complete PMDC motor driver system with closed-loop rotation control using proximity sensor feedback. I have experience in embedded systems, motor control, PWM-based drivers, and sensor interfacing. I can deliver both the hardware design and working prototype with accurate rotation counting and reliable stopping control. > Proposed Approach: Motor Driver Topology * MOSFET-based H-bridge design * PWM speed control * Current sensing and limiting * Flyback/back-EMF protection Controller Recommendation * STM32 Board * Better PWM timers * Fast interrupt handling for pulse counting * Reliable closed-loop control > Scope: * H-bridge motor driver design * Proximity sensor interface and signal conditioning * Rotation counting firmware * Automatic stop logic * PCB layout and fabrication files * Working hardware prototype and testing > Deliverables: * Schematic, PCB files * Gerber, BOM * Embedded firmware source code * Working tested prototype * Test report and user guide

@TechBeMarc

Hello, Having a Master's degree in Computer and Electrical Engineering, alongside my extensive experience in various aspects of electronics and programming, I am confident that I can successfully undertake this project. Specifically, my expertise lies in designing brushed DC motor circuits, H-bridges, motor control and sensor interfacing systems making the PMDC Motor Driver you require right within my domain. Past projects I have worked on that relate directly to this include a similar PMDC motor driver project which incorporates rotation counting and control with an Arduino - just as your project requires. Having extensively worked on KiCad and EasyEDA for PCB designs, I will be able to deliver clear and concise schematic diagrams and Gerber files directly ready for fabrication as part of this project’s deliverables. To go along with that, my proficiency in Embedded C and familiarity with different microcontrollers makes me apt to suggest the ideal MCU for your device: The STM32 series due to its robust performance and comprehensive list of integrated peripherals. My approach to this project will be a step-by-step process beginning with an exploration of your requirement followed by choosing the best-suited components. Layout design will be meticulously handled keeping thermal management in check. Once done, we'll work on building a prototype that will undergo extensive testing before it is submitted for your validation. My propo Thanks!