Sample 01WattWhisperer
One sensor names every appliance
A power bill is one big number. No family can see that the old fridge or the pool pump is the real cost, so nothing ever gets fixed.
- SCT-013 current sensor$12
- ESP32 dev board$9
- Small OLED display$7
- Ballpark$50 to $110
Why it lands. Turns one number into a clear list of what to fix or switch to electric, matched to real rebates.


