Tinkerer’s tricorder

Nickjohnson wrote previously about his Loki PSoC based development board.  Now he’s experimenting with the idea of building an ESR meter:

I’ve been experimenting with different measurement options using the Loki as a test platform. I’m just about ready to start speccing out and designing a PCB soon, and I’ve got a nice case lined up. Here’s a tentative version of one channel.
The blue lines are external components; everything else is internal to the PSoC.