elecfreaks

With this machine, the truth will never escape you! As long as you can make your subject hold a moisture sensor for a while. This tutorial was contributed by Samuel Ong from Raffles Institution. Step 0 – Pre Build Overview In this project, we will create a simple lie detector machine, which works by measuring the electrical conductivity of our skin. Upon feeling nervous, our skin's electrical conductivity will increase, and the moisture sensor can pick up on that. This allows us to determine if a person is telling the truth or not. Materials: 1 x BBC micro:bit 1 x Micro USB cable 1 x Breakout board 1 x Octopus OLED 1 x Moisture Sensor Tips: If you want all components above, you may need  ElecFreaks Micro:bit Tinker Kit . Goals: Get to know the Octopus LED and  Soil Moisture Sensor Learn basic statistics Make something using the  moisture sensor Step 1 – Components First of all, plug in the  soil moisture sensor . Match the colors and note down

Introduction Buzzer is a kind of electronic sound receiver with integrated structure. It is widely used as a voice device in electronic products like computers, printers, copying machines, alarm apparatus, electronic toys, auto electronic devices, telephones, etc..In this experiment, we are going to use Micro:bit to drive buzzer and make its sound circulate between high frequency and low frequency just like alarm song. And we will present its sound frequency on Micro:bit screen with bar chart format. Component List Hardware: 1 x  Micro:bit Board 1 x Micro-B USB Cable 1 x  Microbit Breadboard Adapter 1 x  Transparent Breadboard - 83 * 55 mm 1 x Mini Speaker (Buzzer) 1 x TIP 120 NPN Transistor 1 x 100 Ohm Resistors 1 x  Breadborad jumper wire 65pcs pack Tips: If you want all components above, you will need  Elecfreaks Micro:bit Starter Kit . Software: Microsoft Makecode Online Editor Major Component Introduction Buzzer Buzzer is a kind of voice device

Goals •    Get to know the ADKeypad. •    Make something with ADKeypad. •    Make something with Buzzer. Materials 1 x  BBC Micro:bit Board 1 x Micro USB cable 1 x  ElecFreaks Micro:bit Breakout Board 1 x  Octopus Passive buzzer Brick 1 x  Octopus ADKeypad Tips: If you want all components above, you may need  ElecFreaks Micro:bit Tinker Kit . Step 1 After connecting one end of the USB cable to your computer, connect the other end to the micro:bit as shown in the picture below.Then connect the side of the micro:bit where the pins are located to the breakout board. Step 2 Plug in the buzzer Brick to Pin 0. Plug in the ADKeypad to Pin 2. Make sure the colour of the wire of the buzzer and the ADKeypad follows the colour of the pins on the breakout board. Step 3 Click on Advanced in the Code Drawer to see more code sections. To code for our extra kit components (the ADKeypad and the buzzer), we have to add a package of code.Look at the bottom o

Hello, my friends! New product comes again! Let's take a look what we bring to you. New product: BLE Bluetooth 4.0 Motor Driver Board Based on Arduino UNO . Privately, this product has a nickname:  BLE Motor . We call it BLE Motor for better remembrance. BLE Motor, abbreviated for  BLE Bluetooth 4.0 Motor Driver Board Based on Arduino UNO , is a kind of motor driver board compatible with Arduino UNO. On the black PCB board, you can see colorful pins and components on it. It is small but very powerful. It has integrated BLE Bluetooth 4.0 module, MEGA328 Main Control, L298P motor driver chip, voltage switch, power switch, reset button, etc.. A  BLE Motor  equals to an integration of " Arduino Uno + BLE module + Sensor Shield + L298P Motor Shield ".We can use it to drive a one-way stepping motor or two-way DC motor. We can plug into all kinds of sensors benefit by the sensor port on it. At the same time, we can plug in various Shield extensions because it has a po

Introduction: Flexible 64 RGB LED 8*8 NeoPixels Matrix  is colorful and easy to control. You can use the only I/O port on NeoPixels Matrix to control multiple LED lights. In this article, we are going to teach you how to turn on a light on NeoPixels panel. Components List: Hardware: 1 X  Freaduino UNO Rev2.2 MB_EFUNO  1 X  Flexible 64 RGB LED 8*8 NeoPixels Matrix 3 X Jumper Wire Software: Arduino IDE Major Component Introduction Flexible 64 RGB LED 8*8 NeoPixels Matrix  Every bead on Flexible 64 RGB LED 8*8 NeoPixels Matrix consists of three colors: red, green and blue. Through controlling the power of every bead with commands, we can create all kinds of colors. Hardware Connection Connect NeoPixels Matrix to port  D2 on Arduino board.  Programming Step 1: Add Adafruit_NeoPixel Library In order to use Adafruit_NeoPixel library, we have to put the head file of NeoPixel into the program and define LED corresponding pins. #include <Adafruit_NeoPix