Anyone make a current/voltage watt-hour meter with RS-232 ou

[Sum Guy]

I want to impliment a PC-based data logger for my home energy usage by
measuring my total current, voltage, and power readings at my main
breaker.

I know there are products that do this and have various read-outs and
data logging capability.

I don't want a readout, and I don't want data logging capabilities.

Do any modules or devices exist where I can attach a couple of coils to
measure current on my 2 hot leads and three wire connections to measure
my 2-phase 220 VAC service, and generates numeric data I can read via
serial interface by a PC with a time resolution of my choosing?

 

[DJ Delorie]

http://www.delorie.com/electronics/powermeter/

That might be a good start; you'd need one of the ADE channels, the R8C,
and power supply. No ethernet, keep the USB for programming the R8C and
it doubles as a serial port.

 

[ian field]

"Sum Guy" <Sum@guy.com> wrote in message news:4BBAB6F4.724467A0@guy.com...

I want to impliment a PC-based data logger for my home energy usage by
measuring my total current, voltage, and power readings at my main
breaker.

I know there are products that do this and have various read-outs and
data logging capability.

I don't want a readout, and I don't want data logging capabilities.

Do any modules or devices exist where I can attach a couple of coils to
measure current on my 2 hot leads and three wire connections to measure
my 2-phase 220 VAC service, and generates numeric data I can read via
serial interface by a PC with a time resolution of my choosing?

ISTR one of the UK magazines running a project but I can't remember which
one (Elektor or EPE), or whether it has a 232 I/F.

Presumably there's a kit, or at the very least a PCB.