| ??? 07/27/07 14:11 Read: times |
#142421 - prepaid energy meter help |
Can anyone help me to build a prepaid energy meter? i have an old mechanical energy meter and i want to build a small prepaid circuit using a micricontroller so that i could interface it with the old meter for it to operate as prepaid i thought of geting the revolutions per kwh for a constant value so that if i count up to that number of rev i could then subtract from the prepaid value but i dont know how i will get this rev per kwh or if anyone has a better idea please help |
| Topic | Author | Date |
| prepaid energy meter help | 01/01/70 00:00 | |
| read out the revs | 01/01/70 00:00 | |
| everybody and his brother | 01/01/70 00:00 | |
| Isn't the wheel already marked? | 01/01/70 00:00 | |
| like this | 01/01/70 00:00 | |
| usually it is... | 01/01/70 00:00 | |
| Use a laser pointer to read wheel | 01/01/70 00:00 | |
| I would not do this... | 01/01/70 00:00 | |
I got the impression... | 01/01/70 00:00 |