Description:-
Here is a simple touch switch circuit.
This touch sensor is a capacitive touch sensor module and the sensor is based on the dedicated TTP223 touch sensor IC
Circuit diagram
TTP223 Capacitive Touch Sensor
FEATURES:-
- Input Voltage: 3.3V – 5.5V DC
- Module size: 15mm x 11mm
- touch sensing area of 11 x 10.5mm
- Max sensor range of ~5mm
- Low power mode typical 1.5uA and maximum 3.0uA
- Provides Low Power mode
- All output modes can be selected active high or active low by pad option
Jumper A | Jumper B | Output Lock State | Output TTL level |
Open | Open | No-Lock | High |
Open | Close | Self-lock | High |
Close | Open | No-Lock | Low |
Close | Close | Self-lock | Low |
APPLICATION:-
- Wide consumer products like Touch switches
- Button key replacement
Components Required:-
- Single Relay Module
- TTP223 Touch Sensor Module
- 5 Volt Supply
- AC Load and Supply
Relay Module
