The MicroPeak USB Interface board contains a phototransistor,
op-amp and serial-to-USB interface chip. It also includes a blue LED
which blinks in time with the [MicroPeak](../MicroPeak/) orange LED. This makes
aligning the two boards by hand quite easy.
The MicroPeak USB Interface board contains a phototransistor,
op-amp and serial-to-USB interface chip. It also includes a blue LED
which blinks in time with the [MicroPeak](../MicroPeak/) orange LED. This makes
aligning the two boards by hand quite easy.