Robot Maker Toolkit is the offline field guide for anyone building with Arduino, ESP32 and Raspberry Pi Pico. Wiring, pinouts, ready-to-use code and the calculators you actually need — all on your phone. No internet, no account, no sign-up.

Whether you're wiring your first sensor or debugging a robot at 2 a.m. with no Wi-Fi, every connection is laid out clearly and checked against manufacturer datasheets.

WHAT'S INSIDE

⚡ Modules & sensors
Colour-coded wiring diagrams and connection tables for UNO, ESP32 and Pico — IMUs, ultrasonic distance, temperature & humidity, OLED & TFT displays, motor drivers, real-time clocks, RF, GPS and many more.

📌 Board pinouts
Colour-coded pinout diagrams plus a full pin reference for UNO R3, UNO R4 WiFi, Nano, Nano ESP32, Mega 2560, Leonardo, ESP32 DevKit and Raspberry Pi Pico — with the gotchas called out: 5 V-tolerant pins, ESP32 strapping pins, and PWM / I2C / SPI capabilities per pin.

🧩 Shields
Pin maps and usage notes for popular shields: Motor Shield, 1602 LCD Keypad, Ethernet, CNC, Data Logger, 4-relay and joystick shields.

🧮 Maker calculators
Resistor colour-code decoder, Ohm's law, LED series resistor, voltage divider, battery life, WS2812 power budget, RC filter, 555 timer, PWM-to-voltage, resistors in series/parallel, map() range conversion and more.

📋 Copy & share code
Every module ships with a tested example sketch you can copy to the clipboard or share straight to the Arduino IDE in one tap.

WHY MAKERS LIKE IT

✓ 100% offline — works on the bench, in the field, anywhere
✓ Accuracy first — wiring verified against datasheets, with safety warnings for voltage levels and risky pins
✓ No account, no sign-up, no clutter
✓ Small download, fast and clean

Spend less time searching forums and datasheets, and more time building. Robot Maker Toolkit keeps the reference you need one tap away.