Transistor Lesson

Use a transistor to control a larger current or voltage than the Arduino can handle.  Use the Arduino to control the transistor, and the transistor to control the load. Choose the power supply voltage to match the voltage needed by the external load. Choose the power...

Best Practices for Electronics System: Lesson

System: Use proximity to trigger sound. Proximity Sensor: LiDAR (Light Detection And Ranging) https://www.adafruit.com/product/3317 Arduino Library: https://github.com/adafruit/Adafruit_VL53L0X Reading the LiDAR sensor: Example Code: LiDAR_sensor_readout.ino (Peel the...

High Power LED System

Spreadsheet here, in Excel and Numbers formats: HighPowerLEDWorkshopSpreadsheet   Arduino Uno Pin Current Limits from here. Adafruit 1W White LED. Datasheet from here. 5V 4A Power Supply, here. PN2222 Transistor, here. RGB LED from Adafruit: here. Datasheet...

4. Arduino Basics

An Arduino is a little computer that was designed specifically to be easy to program and easy to use. You will need a full size computer to program the Arduino. Load the Integrated Development Environment Software In order to get your computer and your Arduino talking...