New version here with a more centered design that should fit all the various Speeduino compatible PCBs.
This is a dual channel signal conditioner, sometimes called a VR conditioner. The Mini MAX A2 is based on the Maxim MAX9926 and has indicator LEDs to show that its powered and has signal output. This unit is compatible with the Speeduino 0.3 and 0.4, and also the NO2C and UA4C designs by WTMtronics, and most other Speeduino compatible hardware. It uses the same pin ordering as the jbperf 2.1 modules.
The header pins are included, but are not attached to allow for cheaper shipping.
This conditioner is inverting, set your trigger to rising edge.