In this project we developed user programmable automatic night light using Microchip's 8bit MCU – PIC12F675. In this design user may be able to program and store the time duration of the master light. Compared with other designs this circuit use transformerless power supply, and TRIAC to control the master light.

To get more information about transformerless power supply please refer the Microchip application note AN954, and ST application note AN438 for MCU and TRIAC interfacing.

Project Related Downloads


Complete schematic, operating guides and source codes for user programmable automatic night light project.

References


PIC12F675 - 8-Pin FLASH-Based 8bit Microcontroller
Triacs BT138 series
Microchip application note AN954
ST application note AN438