Laser Emitter Brick

Pictured with the KY-008 kit module plugged in.

Kit Bricks · SKU TP-K08

650 nm red dot laser, switched or dimmed.

₹299

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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

650 nm red dot laser, switched or dimmed. The Laser Emitter Brick is a carrier for the KY-008 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

• On / off / PWM brightness
• Laser trip-wire projects with the LDR brick
• Class 1-3R red dot – never point at eyes
• 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

Safety: Laser: never point it at eyes, people or animals. Adult supervision for younger children.

How to use it with TinkerPie

1. Plug the KY-008 module into the 2.54 mm socket on the top edge. Match the pin names: the brick says S + -, 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 (0x10-0x13; the first is 0x10).
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.

// Laser Emitter Brick (TP-K08): 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::KitDrive out;

void setup() {
  Serial.begin(115200);
  tinkerpie::begin();            // also starts the SENSOR ports (I2C bus Wire1)
  if (!out.begin()) Serial.println("Laser Emitter Brick not found at 0x10: check the cable to SENSOR 1-4");
}

void loop() {
  out.on();                          // module on
  led::fill(Colors::Green);
  basic::pause(1000);
  out.off();
  basic::clearScreen();
  basic::pause(1000);
}

Project: Laser tripwire alarm

Point the laser at a Photoresistor (LDR) Brick across a doorway. When someone breaks the beam, the alarm goes off. Never point a laser at eyes.

// Laser tripwire alarm: Laser Emitter Brick (TP-K08)
// Point the laser at a Photoresistor (LDR) Brick across a doorway. When someone breaks the beam, the alarm goes off. Never point a laser at eyes.
#include <TinkerPie.h>
#include <TinkerPieBricks.h>
using namespace tinkerpie;

tpb::KitDrive laser;
tpb::KitSensor ldr;

void setup() {
  Serial.begin(115200);
  tinkerpie::begin();            // also starts the SENSOR ports (I2C bus Wire1)
  if (!laser.begin()) Serial.println("Laser Emitter Brick not found at 0x10: check the cable to SENSOR 1-4");
  if (!ldr.begin(tpb::KitSensor::ANALOG_IN)) Serial.println("Photoresistor Brick not found at 0x08: check the cable to SENSOR 1-4");
  laser.on();
}

void loop() {
  uint16_t light = ldr.raw();
  Serial.println(light);
  if (light < 400) {                   // the beam is broken: adjust 400 for your room
    led::fill(Colors::Red); music::playTone(1500, 200); basic::clearScreen();
  } else basic::showIcon(IconNames::Yes, Colors::Green);
  basic::pause(50);
}

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