module
Tiny Engineer main control board
Open-source (CERN-OHL-S-2.0) KiCad carrier board for the Tiny Engineer robot with a PCA9685 servo driver, a MAX98357A I2S amp and USB-C; the ESP32-C3-Zero, servos, OLED and speaker plug into it. Not sold assembled: order it from a PCB fab (the project documents JLCPCB PCB assembly). The author is gauging interest in a roughly $15-20 assembled version.
Specifications
| Servo driver | PCA9685 |
| Audio | MAX98357A |
| Power | USB-C, 5 V / 2 A or more |
Projects Using Tiny Engineer main control board1
Illustration
ESP32ESP32-C3
A 3D-printed desk robot with five SG90 servos, an OLED face and a speaker that looks around, types and rings a bell as Claude Code, Cursor or Codex works.
Intermediate
8 parts listed
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