Vermes
Advanced Member level 4
This project was inspired by the clock found on the internet: **broken link removed**. Control processor was changed from PIC to Atmega8, to operate on AVR. Besides, you can easily add a function when you use Atmega. Thermometer works on DS18B20. Software was written in WinAVR, and the board processed in GIMP. Lamps LC-513, system 74141 supports numbers and inverter on NE555 powers them.
Temperature is displayed every 30 seconds blinking.
The board in the attachment has two minor mistakes. Firstly, one of the lamp anode is incorrectly connected to Atmega reset, while it should be connected to PD1. The reset should be connected though RC to +5V. Data line DS18B20 connected to PC3.
Video shows time and temperature displayed alternately in dark:
Link to original thread (useful attachment) – Zegar - termometr na Nixie