I2C Touch Sensor Twig

Products & Technology Grove
#1

I’m using the I2C touch sensor twig in my entry in the toy hacking contest. I’ve contributed a module for this controller to an Arduino library for I2C devices, check it out here: github.com/jrowberg/i2cdevlib

This library works just fine for channels 0-3, but I’m having trouble doing anything at all with channels 8-11 (the other channels that are brought out to connectors on the twig). It appears that channels 8-11 mirror channels 0-3 and aren’t working themselves. E.g., a touch on channel 0 also results in what appears to be a touch on channel 8, likewise for 1 and 9, 2 and 10, and 3 and 11. Channels 8-11 appear inoperative when I hook touch elements up to them directly.

Is this a result of mis-configuring the controller IC over the I2C interface? Do you have some example code that works for all 8 of the channels that are brought out to the board?

Thanks,
Andrew

#2

Also, the demo code on this page: seeedstudio.com/wiki/index.php?t … sor_v0.93b downloads fine, but when I try to open the ZIP file, I get an error, “The Compressed Folder …\I2C_Touch_Sensor_Resource.zip is invalid.” …

#3

I had the same problem with demo code while working on the Toy Contest. Any help from Seeed?

#4

Nothing yet. Feel free to use the i2cdevlib code, if you like. It’s pretty basic, but it can get the job done.

#5

Many zip files at seeedstudio are corrupt, like eagle files for: I2C Touch Sensor Twig, I2C 3-axis Accelerometer, motion frame, oled frame, etc. A few others do open, but more often than not downloads from Seeed Studio are broken. :frowning:

#6

I am also having the same problem.