Parts
Parts library
Every component the build engine knows how to wire and program. Mention any of these in a prompt and it lands on your breadboard.
Sensor
HC-SR04 ultrasonic ranger
Measures distance from 2 cm to ~4 m by timing an ultrasonic echo.
4 pins · works with UNO / ESP32 / PICO
Sensor
DHT22 temperature & humidity sensor
Digital sensor for ambient temperature (±0.5 °C) and relative humidity.
3 pins · works with UNO / ESP32 / PICO
Sensor
HC-SR501 PIR motion sensor
Detects warm bodies moving up to ~7 m away. The classic security-project sensor.
3 pins · works with UNO / ESP32 / PICO
Sensor
Photoresistor (LDR) + 10 kΩ divider
Reads ambient brightness through a simple voltage divider.
3 pins · works with UNO / ESP32 / PICO
Sensor
Capacitive soil moisture sensor
Corrosion-resistant probe that reads how thirsty your plant is.
3 pins · works with UNO / ESP32 / PICO
Sensor
RC522 RFID reader (SPI)
Reads 13.56 MHz cards and fobs — the key to access-control and treasure-chest builds.
4 pins · works with UNO / ESP32 / PICO
Sensor
MQ-135 air quality sensor
Sniffs out CO₂-equivalent gases, smoke and general bad air.
3 pins · works with UNO / ESP32 / PICO