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ESP32 AI Calculator V2 Reads Your Handwritten Equations
diy projects

ESP32 AI Calculator V2 Reads Your Handwritten Equations

This open source ESP32 calculator has a camera and two displays, so it can read a handwritten equation and solve it with cloud or…

Ann Arandia Oct 11, 2026
Robot Poker Chips and Heated Dice: Engineering a Casino Cheat
diy projects

Robot Poker Chips and Heated Dice: Engineering a Casino Cheat

Mark Rober invited makers to beat his casino with hardware. A self-driving poker chip, wax-loaded dice and a wearable card counter were the result.

Ann Arandia Sep 20, 2026
Tiny Contacts Fits Four Relays Onto a 42 x 38 mm ESP32 Board
iot & smart home

Tiny Contacts Fits Four Relays Onto a 42 x 38 mm ESP32 Board

Four Omron surface-mount relays on a 42 x 38 mm board, driven by a ULN2003A so your ESP32 GPIO pins never touch a relay…

Ann Arandia Sep 9, 2026
Duality Canvas: Build a Wall-Sized ESP32 LED Display With WLED
diy projects

Duality Canvas: Build a Wall-Sized ESP32 LED Display With WLED

Andy Huot's Duality Canvas tiles 16x16 addressable-LED PCB panels into a wall-sized display you can scale to any size, driven by an ESP32 and…

Ann Arandia Jul 12, 2026

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