This project is intended to control shower time on pool summer clubs. The dip switch setting will load the internal timer and a relay will power on the water heating. After the time end, the shower will turn off.

This source code is intended to solve the I2C bus issue by software on Renesas/Hitachi H8S 2148AF 16 bit microcontrollers. Included on it, as example of use, the control of Dallas DS1803 Digital Potentiomenter.