wokwi-franzininho Reference
A small ATtiny85-based development board, popular in Brazil.
About the Franzininho
The Franzininho DIY in an open-source, Arduino-compatible board designed in Brazil. It's based on the ATtiny85 chip, so please consult the ATtiny85 documentation for technical information.
The yellow LED (LED1) is connected to pin PB1 of the ATtiny85 chip. You can learn more about the board and the people behind it in the Franzininho homepage (Portuguese).
Pin names
| Pin | ATtiny85 Pin | Functions | Analog Channel | PWM |
|---|---|---|---|---|
| 0 | PB0 | SPI:MOSI, I2C:SDA | Yes | |
| 1 | PB1 | SPI:MISO, LED1 | Yes | |
| 2 | PB2 | SPI:SCK, I2C:SCL | A1 | - |
| 3 | PB3 | A3 | - | |
| 4 | PB5 | Reset | A0 | - |
| 5 | PB4 | A2 | Yes | |
| VCC | VCC | Positive voltage (5V) | - | |
| GND | GND | Ground | - |
On board LEDs
The board includes two 3mm LEDs:
| LED | Color | Function |
|---|---|---|
| ON | Green | Power LED. Always on while the simulation is running |
| LED1 | Yellow | Connected to pin PB1 |
Simulator examples
- Franzininho Blink
- Franzininho Clock, using two 74HC595 shift registers and DS1307 RTC
- Franzininho Analog Temperature Sensor, using NTC thermistor and SSD1306
- Franzininho Digital Humidity and Temperature, using DHT22 and SSD1306
- Ultrasonic Sensor, using 74HC595 and HC-SR04
- Servo Motor control, using Motor Micro Servo and LCD1602
- External pulse counter