Sketch of device with flow sensor.
Url source code
Receipe
- Adafruit Feather 32u4 Bluefruit LE
- Reflective optical sensor
- Super-bright 5mm IR LED
- IR Receiver Sensor - TSOP38238
- IR emitter
- IR receiver
- Tactile On/Off Switch with Leads
- 10K ohm resistor
- Resistors - 220 ohm
- Battery 3.7V 350mAh
- 3d-printed plastic enclosure
Image
