Software UART Archives - Łukasz Podkalicki

ATtiny13 – reading temperature and humidity from DHT11

2019-03-132019-03-13 by Łukasz Podkalicki

This article shows how to make ATtiny13 to read temperature and humidity from DHT11 sensor and log this information using a Software UART. What you need is connect DHT11 DATA-pin to PB0 and RX-pin of USB to serial adapter to PB3 of ATtiny13. You also need to connect sensor to power supply (3.3V or 5V). Well, with a little code … Read more

ATtiny13 – software UART (debug logger)

2016-02-202017-10-17 by Łukasz Podkalicki

Since ATtiny13 does not have hardware USART/UART in some cases we’re forced to use Software UART. In this example project a simple bit-banging UART has been presented. Compiled for both TX and RX it uses just 248 bytes of flash. Default serial configuration is 8/N/1 format at 19200 baud (lowest error rates during tests). It … Read more