Ousmane THIONGANE

General specifications

The overall compute and control architecture of Chromapi: STM32 motherboard, Raspberry Pi, and how they split responsibilities.

August 29, 2026 by Ousmane THIONGANE 2 minutes

Power source, charging, protection, and regulation on Chromapi's motherboard: 2S 18650 pack, USB-C charging, and the 5V/3.3V rails.

August 29, 2026 by Ousmane THIONGANE 2 minutes

Chromapi's 12 Feetech STS3215-C001 servomotors, the RS485 bus wiring between them, and the servo polling rate.

August 29, 2026 by Ousmane THIONGANE 2 minutes

Chromapi's IMU, foot contact switches, wide-angle camera, RGB LED ring, and cooling fan, with their interfaces.

August 29, 2026 by Ousmane THIONGANE 2 minutes

Good news: you can now contribute to Chroma, whether through feedback, GitHub issues, or writing tutorials.

March 3, 2026 by Ousmane THIONGANE 1 minute

Creation and launch of Chroma's official Discord server.

July 1, 2025 by Ousmane THIONGANE 1 minute

Where to find Chromapi's mechanical design: the public Onshape document, simulation models, and the motherboard's 3D render.

August 29, 2026 by Ousmane THIONGANE 1 minute

I'm happy today to announce the launch of Chroma!

May 20, 2025 by Ousmane THIONGANE 2 minutes

The parts to buy for building Chromapi: battery, compute, camera, servomotors, prices, references, and suppliers.

August 29, 2026 by Ousmane THIONGANE 3 minutes

Interactive Bill of Materials for the Chromapi motherboard: components, manufacturer part numbers, datasheets, and sourcing information.

August 29, 2026 by Ousmane THIONGANE 3 minutes