A Bluetooth Low Enegry Buzzer Button, with remotely controlable light.
The button is JavaScript programmable, using the Espruino embedded JavaScript runtime. You can find an example firmware here.
The button runs off a single CR2032 battery, and can run for several months in standby mode. It was originally created as part of my In-Real-Life Chrome T-Rex Game project.
See this example plunkr for interfacing with the button using Web Bluetooth.
| Part Name | Price | Comments |
|---|---|---|
| Big Dome Pushbutton - Green | $9.95 | Red / Blue / Yellow colors are also available |
| RedBearLab BLE Nano v2 | $16.95 | You will also need a programmer, such as this one |
| Coin Cell Battery Holder - 20mm (PTH) | $1.50 | |
| Super Bright LED - Green 10mm | $1.50 | Optional, for extra brightness |
You will also need a standard, CR2032 coin battery. You can order them from SparkFun as well, or simply get one from a local hardware store.