Auto power off is must have feature for battery powered device to help extend battery life. These days, many modern battery powered devices has an automatic power off function. But, if you have battery driven device with no auto-shutoff you can add auto power off using simple circuit designed by Kyle Wengenroth below.
OpenSprinkler is ATmega328-based programmable sprinkler controller / timer. It has ENC28J60 Ethernet controller for web-based scheduling and monitoring, through either wired Ethernet connection or Wi-Fi connection. With some modifications, you can used it to control other electronic devices, such as water pumps, home lighting, power line sockets, through the web interface. The MCU is programmable […]
To get better UV expose, Andrianakis has built new Switch Timer that will turn of his UV exposure box after some time. The timer uses ATmega8 as main processor and two 7-segments LED as display. There are two buttons for set and start the timer. When time runs out, microcontroller switches relay and also sounds […]