Pocket-sized coding device with 12x8 LED matrix that introduces programming concepts through games and puzzles.

A children's coding education startup creating a pocket-sized device that teaches computational thinking without a smartphone or computer.
Designing an engaging, screen-limited coding device with a visual programming environment that runs on a 96x48 pixel OLED display yet provides meaningful coding education for ages 7-14.
The ESP32-S3 drives a 12x8 RGB LED matrix for animations, a 96x48 OLED for text, and reads button + IMU inputs. Wi-Fi enables wireless programming from a web browser.
The firmware presents a visual programming language rendered directly on the OLED: students create programs by selecting from 'move', 'turn', 'loop', 'if' blocks. A lightweight TinyML model analyzes the student's program patterns to detect common misconceptions and offers contextual hints.
Used by 50,000 students across 1,200 schools. 92% demonstrated improved computational thinking.
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