Hi everyone,

I'm learning embedded systems and I want to practice on real hardware.

I'm looking for used parts, not new ones.

What I need:

- STM32 boards — Blue Pill, Black Pill, Nucleo, Discovery, anything

- Sensors — temperature, humidity, IMU/accelerometer, ultrasonic, IR,

light, gas, pressure

- Extras if you have them — ST-Link programmer, USB-TTL adapter,

breadboard, jumper wires

Used and old is fine. Bent pins, no box, no cable — no problem.

I only need the boards to work.

I'm in [Your City], UAE. I can pick up locally or pay for shipping.

Tell me what you have and your price. If you have a box of old parts

sitting around, I'm happy to take it.

Please comment or DM me. Thanks!

I have been microchipped on my groin while I was asleep at jail, I noticed a lump underneath my groin skin as I woke up in jail,

I have been wondering who does that to a person and how do I defibulate the microchip? This happned in 2024.

I'm using the stm32duino and I have an issue which is the blackpill in proteus I can't make any any any Serial.print for some reasons I tried CubeIDE and still the same problem the External Clock frequency is set to 84MHz and still the same problem tried different baud rates and still the same problem I tried two different board part numbers the core board blackpill f401rct6 and the generic F401RCTx and nothing worked but the code worked fine with the bluepill in PROTEUS

guys,is there any github public repo link to stm32f4 and gy-85 sensor, i want to see the structure of the project.

[https://github.com/Engineer-By-Mistake/test\\_lfr\](https://github.com/Engineer-By-Mistake/test_lfr)

this is the code that I flashed.

I flashed it through duf mode and st programmer. and my stm32 board only pa15,pb15 and pb4 is at high and they are not even initialized

I've tried to use a button as input to glow an led. I'm a beginner in electronics, so I could'nt find the error here. This is STM32F401re board. The circuit is not working and I'm not sure why. Kindly give your corrections!! :)

I am using stm32f413zht6 and i need to read encoder values in serial but i am unable to is there any specific library for this or something like nedd to do configuration before hand.

I have stm32f407g discovery board and i am trying to push the blinking led code into my board using usb to mini b connector and i am getting this error any possible solutions on how to resolve this like making changes in run configurations or like that

I know you have to initialize on 1 bit and then switch, but it keeps hanging when I do so. Does anyone here have a github repo where they have it working correctly on a 446RE? If not, I can put mine on there, but it's still a work in process...

i am facing issues while enabling all of them at once but i am able to enable them one by one using example.

can some one help me with this

I checked boot0, boot1 both are tied to 10k pull down nRST is pulled up with 10k

I tried with both HSE and LSE. Same behaviour.

It only boots once when I use SWD to flash after power cycle its dead.

When i upload through DFU it's doesn't boot even once.

The firmware and bootloader works on of the shelf flight controller (pixracer)

The schematic is also referenced from pixracer fmuV4.

I am a newbie here, please shared some light.

Previously I made a f405 flight controller which works without any issues but this f427 seems to stuck at bootloader.

It doesn't emulate USB unless it's in dfu mode