
Brain board
Batterhead221/brain_board
Custom STM32H753 brain board with USB-C power/input selection, 3.3V buck regulation, microSD, CAN, RS-485, FRAM, flash, debug/programming access, and expansion connectors.
Open-source boards designed in KiCad by Batterhead221 on GitHub, from 7 repositories. A board’s address here is its repository’s there.

Batterhead221/brain_board
Custom STM32H753 brain board with USB-C power/input selection, 3.3V buck regulation, microSD, CAN, RS-485, FRAM, flash, debug/programming access, and expansion connectors.

Batterhead221/esp32-c6_microcontroller
custom esp32-c6 development board with rgb status led, user input, i2c expansion, oled support, and onboard environmental sensing.

Batterhead221/game_girl
game_girl is a custom ESP32-S3 handheld mini-arcade built around a monochrome OLED display, rotary encoder controls, button input, buzzer audio, and battery support.
Batterhead221/pocket_sprite
A custom ESP32-S3 handheld game console with a joystick, action button, TFT display, buzzer, battery power, custom PCB, and built-in mini games.
Batterhead221/port_sprite
Compact USB-C to UART debug/programming interface for embedded hardware projects.

Batterhead221/Scream_Bean
This revision is intended to improve the original SCREAM_BEAN layout and move the board closer to a clean, buildable pedal PCB.

Batterhead221/signal_playground
A small interactive PCB I designed as a hands-on electronics toy for my niece.