input
7 pages across tutorials, modules, pinouts and guides.
Collision Sensor
A lever microswitch with its 10 kΩ pull-down and a red hit light already fitted: SIGNAL reads HIGH while the lever is pushed in. The bumper for a TinkerBlock robot, and the sense that never reports a wall that is not there.
Disc Potentiometer
A 10 kΩ thumbwheel potentiometer wired as a voltage divider: turn the wheel and SIGNAL runs from 0 V to VCC, read by one analog pin. The wheel lies flat and overhangs the board's edge, so a thumb turns it from the side.
Knock Sensor
A spring vibration switch with its 10 kΩ pull-down, a 100 nF capacitor and a red flash light already fitted: SIGNAL goes HIGH for a moment each time a knock swings the spring onto its rod. A tap on a table as a button, a door that was knocked, a box that was dropped.
Latching Button
A push-on, push-off switch with its pull-down and a red indicator LED already fitted: one press turns SIGNAL HIGH and it stays HIGH, through a reset or a power cut, until the next press.
Push Button
A 12 mm momentary push button with its 10 kΩ pull-down and a red press light already fitted: SIGNAL reads HIGH while the button is down. The first input in the kit, and the module that teaches debouncing.
Rotary Encoder
An EC11-type rotary encoder with a push switch in its shaft, its pull-ups, filter capacitors and pull-down already fitted. Two contacts a quarter of a cycle apart give the direction; the program keeps the count. Pushed in, BTN reads HIGH.
Rotary Potentiometer
A 10 kΩ linear potentiometer with a knob, wired as a voltage divider: SIGNAL gives 0 V to VCC as you turn. A red LED on the wiper glows as you turn up, and it bends the upper part of the reading: hard on 5 V, less on 3.3 V.