Overview
It can detect the change in capacitance when a finger is nearby. This means no matter if your finger directly touches the pad or just stays close to the pad, the Grove - Touch Sensor will output HIGH.
Tech specs
- Operating Voltage: 2.0 - 5.5V
- Operating Current(Vcc=3V):1.5 - 3.0μA
- Operating Current(VDD=3V):3.5 - 7.0μA
- Output Response Time: 60 - 220mS
- Used Chipset: TTP223-BA6
Get Inspired
If you want to upgrade your soldering setup without spending a lot of money, then be sure to check out Angelo Casimiro's DIY Hakko 907 station. This low-cost device features an Arduino Nano to read the iron temperature via an LM358 op-amp, and regulates power to the handle and tip under PWM control using an IRFZ44N MOSFET. A potentiometer is implemented as a variable temperature knob, with the actual and preset temperature displayed on a 16x2 LCD screen, while an LED indicates whether the heating element is active. Everything is encased in a nicely printed and painted enclosure, which forms a brilliant little station that one could be proud to use. Full build instructions can be found here, including the PCB, code, and print files.
