Hardware · build

An ESP32 robot car built for school kids, no soldering

A stripped-down ESP32 robot car designed for school project days: two motors, a PS5 controller, an ultrasonic sensor and three driving modes, with nothing to solder.

Build sheet

Controller: PS5 controller
Microcontroller: ESP32
Sensor: Ultrasonic
Assembly: No soldering

Can I build this?Beginner · AI 4/5 · $30–60

Difficulty: Beginner
AI-buildability: 4/5
Time: A weekend
Cost: $30–60

Parts

ESP32 ultrasonic sensor two DC motors

Tools

3D printer

Starter prompt

Based on "An ESP32 robot car built for school kids, no soldering" on Afterware: https://afterware.xyz/p/an-esp32-robot-car-built-for-school-kids-no-soldering

Write ESP32 Arduino firmware for a two-motor robot car driven by an H-bridge motor driver. Pair a PS5 controller over Bluetooth to drive forward, back and turn, and read an HC-SR04 ultrasonic sensor to stop before obstacles. Add three selectable modes: manual drive, obstacle avoidance and a demo mode, switched with a button.

Estimates based on the original write-up. How AI-buildability is scored. Building with an AI assistant? Connect it to Afterware (free MCP server).

Story

Built as a simplified robot car for school project days, this one drives on two motors and takes commands from a PS5 controller. An ultrasonic sensor handles obstacle detection, and the car switches between three modes.

The whole build is designed to skip the soldering iron entirely, so it fits a classroom schedule and kids can assemble it themselves. The controller pairing and mode switching give students something to tinker with once the car is running.