this kind of optic fiber is probably only plastic so for a full DIY , you can use also fishing wire with a big power led or an old chistmass tree optic fiber lighted.....
I think the comment in the routine
void measureBattery() {
// R1 = 1MOhm, R2 = 220 kOhm
Should be
void measureBattery() {
// R3 = 1MOhm, R2 = 220 kOhm
(R3)
Is it possible to add (comment out) some lines how to calculate the battery percentage and send this via gw.sendBatteryLevel (batteryPcnt)
Great sketch!
When you read the data sheet correctly you can see, that the distance between the pins is different for a AA and AAA battery holder. That`s why I was asking if somebody can recommend a holder that fits.
