OSH Park

1Bitsy STM32F415 Development Board

Open-Source Miniature Breadboard Friendly ARM Cortex-M4F Dev Board with 1MB Flash, 196kB RAM, 168MHz, floating point and more.

What is it?
1Bitsy is a debuggable open source STM32F415 development board. Designed for beginners as well as advanced users that want more control over their embedded software by exposing the JTAG/SWD debug interface that is compatible with the Black Magic Probe JTAG/SWD debugger with built in GDB server.

What makes 1Bitsy special
The main goal of the 1Bitsy platform is openness. We want to provide a platform that is not artificially trying to hide complexity to provide a false sense of simplicity but rather expose the amazing power of an ARM Cortex-M4F core and the STM32F415 peripherals to take advantage of. Also the chip we have chosen has lots of space for your code and runs at 168MHz making it a fast and spacious work horse.


    • STM32F415RGT6 ARM Processor
    • 168MHz core clock
    • 192kB RAM
    • 1MB Flash
    • I2C, UA(S)ART, SDIO, Timers, ADC, DAC, SPI, I2S, USB FS, USB HS
    • Hardware accelerated AES encryption
    • User controllable LED
    • User controllable Button (it’s not a reset button :D)
    • Fits on a bread board for easy prototyping
    • Exposed JTAG and SWD debugging/programming interfaces
    • Designed for painless software development with the Black Magic Probe debugging tool.
    • Can be used as a standalone dev kit using DFU bootloading

For more information, check out the 1bitsy home page or Github page.


This is the OSH Park store. Boards are on sale here by permission of their creators.

Products may be manufactured on-demand, so may take up to two weeks from ordering to shipping.

Latest Tweets