Every day I routing same parts in my projects
I decided to make square inch core with castellated holes in 2.54 pitch pin.
What is on ArmaBrain
- Samd21e18 with UF2 MSD bootloader
- MCP73831T battery charger
- Micro Usb connector, in next modules USB-C
- Charging LED
- Bootloader LED
- Speaker
- Reset button
- JTAG header
- Backlight control transistor
- Power regulator
- All necessary capacitors and resistors


can you please give me the part # of the speaker/buzzer? it's really small and I like it!