View source for TTP229-B

= 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.
[[File:TTP229 screendump.PNG]]

The values that this device reports will be as follows:
= Commands =


{| class="wikitable sortable"
|-
! Button
! Value
! Extra information
|-

| 1	
| 257
| rowspan="15"|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
| 
|-

|}