In this article we look at 10 sensors and modules that you can use with an Arduino and various other micro controllers and development boards like the ESP32, ESP8266 and the Raspberry Pi that cost under $2
The ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. In this article we look at a few options that you can buy and develop with this tremendous microcontroller.
THE MQ-3 is suitable for detecting Alcohol, Benzine, CH4, Hexane, LPG, CO. The sensitivity of the sensor can be adjusted by using the potentiometer.
In this article we simply show you 4 examples using an RGB LED connected to an Arduino The RGB led we had was a common anode type, so if you only have common cathode one's available you will have to modify the code examples later on
In this article we will look at the wemos matrix shield, we will have numerous examples using the Arduino IDE The shield is an 8x8 LED matrix, this matrix is controlled by a TM1640. The TM1640 is a LED (Light Emitting Diode Display) drive control circuit integrating MCU digital interface, digital latch, LED high voltage drive circuit, etc
Here are a few code examples for the Wemos RGB LED Shield, the shield consists of 7 RGB LEDs (WS2812B-mini) each wtih 24-bit RGB color 9 optional control pins (Default: D4/GPIO2) It fits on a Wemos mini and is easy to create examples, you simply need to add the adafruit neopixel library in the library manager in the Arduino IDE Example 1 This is the default example #include <Adafruit_NeoPixel.h> #define PIN D4 #define LED_NUM 7 Adafruit_NeoPixel leds = Adafruit_NeoPixel(LED_NUM, PIN, NEO_GRB + NEO_KHZ800); void…
In this article we compare the BMP180 and SHT30 temperature sensors using a Wemos Mini and various shields. We will look and see if there are any significant difference in temperature readings.
In this article we look at another five Wemos shields and will have examples of their usage. The shields we are looking at are the BMP180 Shield, DS18b20 Shield, RGB LED Shield, buzzer Shield and the OLED Shield.
In this example we will create a simple traffic light system with a micro:bit. This is fairly simple and at a basic level involves switching red, amber and green LEDs on and off at certain time intervals.
In this article we show you how to create a dice using your micro:bit, there are a couple of ways to do this and we will also show a couple of different development examples.