Grove Zero - Touchpad
• What is it？
The Touchpad can turn any conductive object (like human body and bananas) into triggers to control your circuit.
• How it works？
There are 4 touchpads labeled with number 1 to 4 on the module, the bars between the touchpads (like 1 and 2 or 3 and 4) are all GND. GND is connected to the ground in order to complete a circuit.
You can touch the touchpads and the GND next to it with your finger, or easily attach crocodile clips or 4mm banana plugs to them. When a touchpad is connected to GND, it completes a circuit and send closed loop electrical signals to trigger an event like button click or press.
• Try it
Connect the circuit as shown below, touch one of the pads and ‘Earth’ at the same time, see what will happen.
• Real World Analogy
• More Information