wokwi-franzininho

Franzininho DIY board reference - a small ATtiny85-based development board popular in Brazil

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