Robot Maker Toolkit: Pinouts Live

Robot Maker Toolkit is the offline field guide for anyone building with Arduino, ESP32, ESP8266 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 🔧 Buildable projects Seven complete projects, each with the parts list, datasheet-checked wiring and the full sketch: motion night light, parking sensor, desk weather station, plant water monitor, digital bubble level, smoke and gas monitor and radar scanner. Build one end to end instead of reading nine tutorials that disagree. 🧠 Build planner Pick your board and the modules you're actually wiring, and the planner merges them into one wiring plan: a clashing pin assignment is moved to a pin that can still do the job, I2C address collisions are flagged, 5 V parts on a 3.3 V board are flagged, and the pin map for your sketch is generated at the end. Every module page is correct on its own — three of them can still all say D9. ⚡ Modules & sensors Colour-coded wiring diagrams and connection tables for 56 modules on 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 ten boards — UNO R3, UNO R4 WiFi, UNO Q, Nano, Nano ESP32, Mega 2560, Leonardo, ESP32 DevKit, ESP8266 NodeMCU 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 seven popular shields: Motor Shield, 1602 LCD Keypad, Ethernet, CNC, Data Logger, 4-relay and joystick shields. 🧮 Maker calculators Twelve calculators, free for everyone: resistor colour-code decoder, Ohm's law, LED series resistor, voltage divider, battery life, battery energy, WS2812 power budget, RC filter, 555 timer, PWM-to-voltage, resistors in series/parallel and map() range conversion. 📋 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 FREE AND PRO All seven projects and all twelve calculators are free, along with 25 modules, 5 board pinouts (UNO R3, UNO R4 WiFi, UNO Q, Nano, ESP8266 NodeMCU) and 4 shields. Pro is one purchase, no subscription: the build planner, the full 56-module library, all ten board pinouts including ESP32 DevKit and Raspberry Pi Pico, every shield pin map, and no ads. Spend less time searching forums and datasheets, and more time building. Robot Maker Toolkit keeps the reference you need one tap away.