Rotary Encoder Brick

Pictured with the KY-040 kit module plugged in.

Kit Bricks · SKU TP-K33

Endless knob with push button: menus and volume.

₹299

Pre-order

Pre-order on WhatsApp

Works with TinkerPie V1 · Arduino C++ with the TinkerPieBricks library · Delivery across India: ₹100, 3–7 days · 7-day replacement for damaged or defective kits

About this kit

Endless knob with push button: menus and volume. The Rotary Encoder Brick is a carrier for the KY-040 module from common 37-in-1 sensor kits: plug the module into the socket and connect one cable to a TinkerPie SENSOR port. A small CH32V003 processor on the brick does the timing work, so your program simply reads the result over I2C.

Features

• Position counter (int16) decoded in the brick
• 20 detents per turn
• Push button counter
• Plug the kit module straight into the socket – no jumper wires
• One cable to any TinkerPie SENSOR port (I2C), BUS IN + BUS OUT to chain more bricks
• On-board CH32V003 does the timing – your code just reads the result

Specifications

How to use it with TinkerPie

1. Plug the KY-040 module into the 2.54 mm socket on the top edge. Match the pin names: the brick says CLK DT SW + G, the module has the same letters.
2. Connect BUS IN to any TinkerPie SENSOR 1-4 port with a 4-pin JST-PH cable (the same cable as the other sensors).
3. More bricks? Plug the next one into BUS OUT. Two bricks of the same type need different addresses: bridge ADDR +1, +2 or +4 on the back (0x2E-0x2F; the first is 0x2E).
4. Install the TinkerPie and TinkerPieBricks Arduino libraries, open the quick-start sketch below, choose the board ESP32S3 Dev Module and upload.

Libraries: TinkerPie and TinkerPieBricks (Arduino IDE: Sketch → Include Library → Add .ZIP Library). Full guide: getting started with TinkerPie Bricks.

Quick start

Upload this, open the Serial Monitor at 115200 baud and watch the TinkerPie matrix.

// Rotary Encoder Brick (TP-K33): quick start
// Reads the brick and shows the value on the TinkerPie matrix and in the Serial Monitor (115200 baud).
#include <TinkerPie.h>
#include <TinkerPieBricks.h>
using namespace tinkerpie;

tpb::KitEncoder k;

void setup() {
  Serial.begin(115200);
  tinkerpie::begin();            // also starts the SENSOR ports (I2C bus Wire1)
  if (!k.begin()) Serial.println("Rotary Encoder Brick not found at 0x2E: check the cable to SENSOR 1-4");
}

void loop() {
  int16_t pos = k.position();        // turns: + clockwise, - anticlockwise
  if (k.pressed()) k.zero();
  Serial.println(pos);
  led::plotBarGraph(abs(pos) % 31, 30, pos >= 0 ? Colors::Green : Colors::Blue);
  basic::pause(50);
}

Project: Volume knob synth

Turn the knob to change the note, press it to play. Each click is a step of the C-major scale.

// Volume knob synth: Rotary Encoder Brick (TP-K33)
// Turn the knob to change the note, press it to play. Each click is a step of the C-major scale.
#include <TinkerPie.h>
#include <TinkerPieBricks.h>
using namespace tinkerpie;

tpb::KitEncoder knob;
const int SCALE[] = { 262, 294, 330, 349, 392, 440, 494, 523, 587, 659, 698, 784, 880, 988, 1047 };

void setup() {
  Serial.begin(115200);
  tinkerpie::begin();            // also starts the SENSOR ports (I2C bus Wire1)
  if (!knob.begin()) Serial.println("Rotary Encoder Brick not found at 0x2E: check the cable to SENSOR 1-4");
}

void loop() {
  int step = constrain(knob.position(), 0, 14);
  led::plotBarGraph(step, 14, Colors::Purple);
  if (knob.pressed()) music::playTone(SCALE[step], 200);
  basic::pause(20);
}

More TinkerPie Bricks

DS18B20 Temperature BrickTP-K01 · Environment · KY-001Waterproof-grade digital thermometer chip, read in C over I2C.₹299Pre-orderShock Switch BrickTP-K02 · Motion · KY-002Detects knocks and vibration with a spring switch.₹299Pre-orderHall Magnetic Sensor BrickTP-K03 · Magnetic · KY-003Senses a magnet near the A3144 hall switch.₹299Pre-orderButton Switch BrickTP-K04 · Input · KY-004A tactile push button on the bus.₹299Pre-order

See all 53 TinkerPie Bricks

Pre-order on WhatsApp