Circuit Templates
Browse our collection of 9+ ready-to-use circuit designs with schematics and components lists.
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Beginner
Intermediate
Advanced
Oscillators
Astable 555 Timer
Beginner
Basic oscillator circuit using the 555 timer IC
Lighting
LED Flasher
Beginner
Simple alternating LED flasher circuit
Audio
LM386 Audio Amplifier
Beginner
Basic audio amplifier using the LM386 IC
Motor Control
PWM Motor Controller
Intermediate
Speed control for DC motors using PWM
Microcontrollers
Arduino Data Logger
Intermediate
Data logging system with Arduino and sensors
Power
Power Supply Unit
Advanced
Adjustable regulated power supply circuit
Sensors
Simple Touch Sensor
Beginner
A beginner-friendly circuit to detect touch using a single transistor.
Digital Logic
SR Latch Flip-Flop
Intermediate
A fundamental memory circuit using two NOR gates to store a single bit of data.
RF Circuits
Low-Power FM Transmitter
Advanced
A simple circuit to transmit audio signals over a short range on the FM broadcast band.