Start from a known-good design
Pick a template, open it in the studio, and iterate. Every template is a real working circuit — modify any component or start over with a prompt.
LED blinker
The "hello world" of electronics
An ATmega328P blinks an LED on pin 13 through a current-limiting resistor. Has a 16MHz crystal + power-on reset. Perfect starter project.
- ATmega328P
- 16MHz crystal
- LED
- 220Ω resistor
Voltage divider
Two resistors, one output
The simplest possible circuit — two resistors dividing a 5V input to a lower voltage. Useful for reference, ADC scaling, or teaching Ohm's law.
- 2× resistor
- 5V source
I²C sensor
ESP32 reads an I²C device
An ESP32 talks to an I²C sensor over SDA/SCL with pull-up resistors on the bus. Template for any BME280, MPU6050, or similar.
- ESP32
- I²C sensor
- 2× 4.7kΩ pull-ups
- Decoupling caps
SPI OLED
Drive a tiny screen
ATmega328P driving an SSD1306 128×64 OLED over SPI. Classic maker project — add graphics via the Adafruit GFX library.
- ATmega328P
- SSD1306 OLED
- 16MHz crystal
ESP32 battery sensor
Battery-powered Wi-Fi IoT
An ESP32-WROOM-32 running off 2×AA with a boost converter, battery-voltage monitor, and a soil probe. Sleep-cycle ready.
- ESP32-WROOM-32
- Boost converter
- 2× AA battery pack
- Soil probe