I bought this board to provide an off-the-shelf way to read in the load from the A401 flexiforce Sensor... the big round one rated for 1-25lbs. Well the sensor is capable of doing other force ranges including 0-1lb which is what I needed. Unfortunately this board is not able to adjust the feedback resistance so it only works for the 0-25lb range with the A401 sensor. I asked Robotshop via their support email for a circuit diagram of the board and they pointed me incorrectly to a single op-amp circuit on the Tekscan/flexiforce website. The actual circuit on the board is a single supply instrumentation amplifier circuit using 2 op-amps and it's tuned quite well for 0-25lbs. I also liked the cables and simple breakout connections for this board. Very competitively priced compared to purchasing the board offered by Tekscan themselves.