In Progress

Circuit and PCB design for STM32 MCU

I have a new project for circuit and PCB design. It uses an STM32 MCU (exact model to be decided with freelancer) with several interfaces to connectors:

- I2C interface to DAC chip on the board with some complexity behind it (I have schematic design, but good to be checked upon copying)

- 10 PWM pins connected to timers, 2 x ULN2003 for 8 of the outputs, 2 transistors for the others

- 5 ADC inputs (8 bit), possible amplifier in one of the channels, rest is direct connection to header

- 51 GPIO pins, that include 39 pins directly wired to headers, 5 pins for green LEDs, also directly to headers, 6 pins for programming through ST link/v2 (SWD), 1-2 input pins for mode selection

- Depending on the chosen MCU, if available 2 additional ADC pins and a few additional GPIO/timer pins to connectors

The project is based on already produced PCB, but now I need to increase a little bit the size of the PCB, also some MCU pins are messed up and many components are being removed so there should be no problem with the space. Because of the simplification, probably smaller MCU can be used. I can provide schematic and PCB design files from the previous project to be used to some extent.

I see the following milestones:

1. Schematic design. It will be relatively simple, the previous schematic can be used as a base with multiple components removed, only the I2C connection is new. Because of the MCU pins mess up and probable change to smaller MCU I expect there will be some work around the MCU pinouts. I prefer to make the discussions on the schematic in PDF format during this milestone.

2. PCB design. While I will provide the old PCB, as I mentioned the new one will be slightly longer, but there will be no change in the connectors/mounting holes position. It is a 2 sided PCB. Possibly full redesign and rerouting will happen here so old design will not be of much help. There are some limitations for the component position.

3. Created project for Atollic truestudio for stm32 with assigned MCU pins and necessary libraries so I can start integrating my software and debugging.

4. Final receive of all source files (Schematic, PCB design, Gerber files, BOM, truestudio project, PDF file with print of the schematic and both PCB sides)

Thank you for considering my project!

Skills: Circuit Design, Electrical Engineering, Electronics, Microcontroller, PCB Layout

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About the Employer:
( 0 reviews ) Tokyo, Japan

Project ID: #19963282

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Hi, I have used STM32 since 2011, and most of my projects were using STM32, especially STM32F4. For this project, where lot of pins required, I suggest you to use STM32F407ZG which has 144 pin. I guess that's enough f More

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39 freelancers are bidding on average $597 for this job


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Hi sir, We are very much sound with STM32 and PCB designs, please check our profile and we will do this project for you. We are professional engineers and developers who do such projects from the last 10 years. More

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hi, I'm embedded systems designer from India. I have experience with complete electronics product development. I have worked on stm32 and can develop PCB design as well as software programming for stm32. I can help in More

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Hello. I am a enginner for PCB and MCU . I use the Altium and Eagle, Kicad.. Regards. /////////////////////// ///////////////////////////////////// ///////////////////////// ///////////////////////////////////// More

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Hi there. I offer you the services for ARM/PCB designs, I complete the jobs in STM32F4**. I am ARM design expert with 10+ years of experience in Circuit designs, PCB designs, ARM software development. You can check More

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I'm an electrical engineer capable of modifying your design as well as implementing new/improved circuits within the project. I can create a new schematic, layout, and basic 3D model. One question I have is with the At More

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Hi, I'm an experenced embedded HW/SW engineer with particular experience with STM32 series MCU. I also have a lot of experience in designing PCBs. Since you didn't provide much information about low-power modes and More

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Hi dear, I'm interested in the position PCB design and Firmware for STM32 Project you recently posted, particularly being from Embedded Systems and PCB Design. I have strong C/C++ skills and experience with micr More

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Hello, I am Hung, I am from in Vietnam. I'm an embedded programmer for MCU, work on STM32 to program Robot at Of course, I have some PCBs about it for DAC, ADC, IO...... I hope we can work together. More

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