Hello, I'm using an ATmega 328p with a TOUCH SENSOR TTP223 interface. I'm using a battery to supply 5v to the atmega 328p, and through the ldo, I'm getting 3.2v to the atmega IC and 2.6v to the touch sensor. To make it high and low, I'm using the sda data pin as a digital pin. The problem is that the touch sensor is always on. I removed the sda pin and it remained in a high state without any touch input until I desoldered the vcc pin and soldered it back on. Can somebody let me know whtats the excat thing is going on?
Could you post a schematic? What is the 2.6V?
What does this mean? The touch sensor outputs a voltage.
How do you know that if the Arduino should be reading the sensor input?
Please post a link to the touch sensor also.
datasheet_TOUCH SENSOR.pdf (251.3 KB)
Please reffer the touch sensor datasheet
Thanks.
Can you also post a schematic / photo of the setup and your code (use the </> button)?
Why do you need this sensor? The Arduino pin can be used in a similar way and there is even a several libraries for this purpose. And yes, the scheme will help.
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