Follow Me Light
About the project
use wifi singnal make light can auto on/off when you near it or leave.
Estimated time: 2 days
Items used in this project
*This is using Wi-fi version. The BLE version has proposed on the other web site. Most of this article is the same as BLE version*
I was lying in bed exhausted, I found that the lights were still on, but I didn't bother to get up and switch it.
I walked into the dark room and the lights were off. I have to find the switch in dark.
Hence I wanna have a wireless switch that can help me turn on/off light.
Hardware and Software
Microchip AVR-IoT WG Development Board as remote switch use OOB demo firmware.
Linkit 7697 control LED lamp. Firmware program by Arduino IDE.
First, let AVR-IoT WG into Wi-Fi AP mode (hold SW0 when power on). Then Linkit 7697 work as Wi-Fi client keeps scan AP. Once it finds AVR-IoT WG and RSSI is big enough. 7697 turn on the LED lamp. While AVR-IoT WG turns off Wi-Fi AP off or leaves the room 7697 turns off the lamp.
Since Linkit 7697 is 3V3 device and IO drive current not enough, need transistor of MOS circuit to switch LED.