What is DevPocket?

DevPocket is a compact, battery-powered debugging and prototyping device designed to fit in your pocket and work anywhere — no PC required. The idea was born from the need to have a full-featured microcontroller dev board that you can carry with you, attach to your phone like a MagSafe accessory, and use directly from an Android device via micro-REPL.

The project is fully open-source and open-hardware — schematics, PCB layout, and firmware will all be published.


ParameterValue
MCUESP32-WROOM-32UE (Wi-Fi + BT)
USB-UART BridgeCP2102GM
BatteryLP603048, 900 mAh LiPo
Charging ICTP4056-42-ESOP8 (USB-C input)
Boost ConverterTPS61023DRLR, 5V output
LDOAP2112K-3.3, 3.3V rail
RGB LEDs4× WS2812B-2020 (addressable, configurable)
Buttons2× tactile, user-configurable
ExpansionmPCIe slot (custom modules supported)
GPIO Header30-pin, 2.54mm pitch (3.3V, 5V, UART, SPI, I2C, GPIOs)
USB ConnectorUSB Type-C (charging + data)
ESD ProtectionUSBLC6-2SC6 on USB lines
Supervisor ICSTM6519AHARUB6F
MountingBuilt-in MagSafe-compatible magnetic ring