Simple device for home use. CPU - atmega128, without OS.  The project is old, but I still maintain it when something is bad working and when I want to add a new feature. The code style is different from linux kernel style, but when I add or correct something I change it like in the LK.  Device has temperature sensors, RTC, Flash, LCD, simple keyboard. Main features: timers, remainders, thermostats, temperature sensors, stopwatch... Several guys use it as thermostats, some like a remainder...I have been using it as main controller of my aquarium, witch in the same time is clock, stopwatch, inside and outside temperature sensor... and in some days I wanted to measure humidity by those sensors but still don't use this opportunity...  It use some files copied from my old aged libraries and they need to be rewritten but I don't touch them and use it as historical value.  It should be rewritten becouse it was written with parts from different projects. From the very beginning to compile was used IAR but now it successfully was replaced on gcc-avr. It was created with "quick hand", so without git and ....