Step 5: Sensor Installation
4 1.8x1.8" 3/8" thick color acrylic platforms, with a 0.25x0.25" square cut at its center
4 1.8x1.8" 3/8" thick color acrylic stabilizers, with a 0.25" circle cut at its center
4 1.8x1.8" 1/8" thick color acrylic covers
8 1.0x.25" 1/4" thick color acrylic bars
1. Attach the four pressure sensors to the sensor block using double-sided tape. Avoid taping the actual sensor as it tends to pull the sensor apart after being moved several times. Make sure each sensor is centered in its section of the block.
2. Attach two acrylic support bars around each sensor using double-sided tape.
3. Attach the four acrylic stabilizers using double-sided tape and check that the sensors are centered beneath the holes.
4. Insert the wooden dowels into the square holes and hot glue into place. Make sure the dowel is perpendicular to the platform piece or it will not come down on the center of the sensor.
5. This leaves the sensor platforms with an ugly top, so we finished them off by sanding off the excess glue and attaching the thinner 1/8" thick pieces to the top with double-sided tape. This leaves the platforms with a smooth surface.
6. Finally, each platform, with dowel attached, is inserted into the circular holes of the stabilizer pieces. If the dowel is a tight fit you may have to sand it down a bit. The fit should be loose enough that the dowel drops through the hole under its own weight and tight enough to prevent wobble in the platform. We tried many different setups for distributing the weight onto such a small sensor, but had trouble using any other method getting them to work consistently.