Electronics — Common ICs and Modules Quick Reference

Electronics — Common ICs and Modules Quick Reference BSS138 Level Shifter (3.3V to 5V) Bidirectional — no need to specify direction. Relay Module (SRD-05VDC) Active LOW: send LOW to trigger relay. Max: 10A 250VAC. L293D Motor Driver Direction: IN1=HIGH, IN2=LOW = forward. IN1=LOW, IN2=HIGH = reverse. IRF520 MOSFET Module Drives up to 9A DC from 3.3V or 5V signal. I2C OLED SSD1306 Default I2C address: 0x3C DHT22 Temperature and Humidity DHT22: ±0.5C, 0-100% RH, 0.5Hz update rate Links Adafruit tutorials SparkFun tutorials Falstad circuit simulator

Related Guides

• How to Control GPIO Pins on Raspberry Pi with Python
• Build a DIY Component Tester: Transistors, Diodes, Capacitors, and MOSFETs on One Cheap Meter
• ESP32 GPIO Pinout Constraints
• Standard Resistor Color Codes
• Logic Level Voltage Standards
• Common Op-Amp Pinouts
• Standard Capacitor Markings
• Electronics — Resistor Color Code Reference