Hand-solderable 9V battery-powered red LED blinker using a 555 timer in astable mode, an on/off switch, and through-hole support components for approximately one blink per second.
Rainbow is a pet collar project that would be programmed to send its location alerts whenever your pet is out of a predefined geofence. It also has a microphone and an accelerometer sensor to enable pet owners monitor their pets activities remotely
#Pets #geofence #geolocation #collar #template
