TTP229-B

{Workinprogress}

Introduction

The TTP229 is a chip used for touch pads. Typically the TTP229 is used with 8 or 16 keys. Power requirements are 2.4V - 5.5V which makes them ideal to use with ESP Easy, the communication protocol is I2C so essentially only 4 cables are needed for up to 16 keys.

Hardware

1st-GPIO -> SCL on the module 
2nd-GPIO -> SDA on the module (sometimes labeled SD0)
2.4-5.5V to module VCC 
GND to module GND

ESP Easy

Use the device tab on the ESP Easy web interface and create a new task by editing one of the available tasks. Select "Keypad - ..." from the drop down box.

The values that this device reports will be as follows:

Commands

Button	Value	Extra information
1	257	If you want the buttons number instead of the logarithmic expansion you could use this formula [1,4427ln(%value%)-7,0056].
2	514
3	1028
4	2056
5	4112
6	8224
7	16448
8	32896
9	65792
10	131584
11	263168
12	526336
13	1052672
14	2105344
15	4210688
16	8421376