PIC 16f877 A/D conversion Allegro ACS712

[Darrel Taylor]

I'm going to get one and try it out so I can see this for myself.

Then get yourself some of the adapters shown below.

The other picture is a 3-phase current sense board a did for a customer. You can see how small they are. They don't come in any larger packages.

I was using current transformers instead of hall-effect sensors, but the idea (and RMS requirement) are the same for either type.

I also had to use a TLV324 op-amp (not shown) to bring it up to levels the PIC could read accurately.