I like the WS2812 Neopixel boards, modules and LEDs you can buy and have been looking at some of the variants but coming at over $35 for some of these I baulked at buying them, recently I found compatible boards …

In this example we look at an VEML6070 UV sensor and connect it to an Arduino UNO VEML6070 is an advanced ultraviolet (UV) light sensor with I2C protocol interface and designed by the CMOS process. It is easily operated via …

The MPL3115A2 is a compact, piezoresistive, absolute pressure sensor with an I2C digital interface. MPL3115A2 has a wide operating range of 20 kPa to 110 kPa, a range that covers all surface elevations on earth. The MEMS is temperature compensated …

In this example we look at a module based on the TCRT5000 Reflective Optical Sensor with Transistor Output. A very basic description of the TCRT500 is that it is an Infrared LED and an Infrared detector. It works by transmitting …

The QRE1113 features an easy-to-use analog output, which will vary depending on the amount of IR light reflected back to the sensor. The QRE1113 IR reflectance sensor is comprised of two parts – an IR emitting LED and an IR …

The next module to take a look at is quite often entitled 4-CHANNEL LINE TRACKER SENSOR, thats exactly what it does the module consists of a main module and 4 little sensor/reciever modules that connect via a 3 pin cable …

This time we look at another one of the sensors in the sensor kit – this time its the KY-35 Metal touch sensor module Very simple – the touch sensor (mosfet) will generate an output when the metal leg of …

The ky-38 sound sensor is a very basic sound level detector module which features an electric condenser microphone. It is part of  a sensor kit that can be purchased and the main part of the module is an LM393 comparator. …

On this page we look at Scratch for Arduino – s4a. We will be using a Keyestudio board which contains a variety of LEDs and analog inputs for testing. Scratch is a basic environment for learning development, you drag and …

In this post we take a look at cayenne – https://cayenne.mydevices.com/cayenne/signup This is the blurb from the website Easy IoT with myDevices Cayenne Features Include: Remote access your Pi from your mobile phone or computer Remote commands (reboot, shutdown, remote access) …

In this example we will write to the EEPROM which is on the micro controller of the Arduino The supported micro-controllers on the various Arduino and Genuino boards have different amounts of EEPROM: 1024 bytes on the ATmega328P, 512 bytes on …

The BMG160 is an ultra-small, digital 3-axis angular rate sensor with a measurement range up to 2000°/s and a digital resolution of 16 bit for consumer electronics applications. The BMG160 allows low-noise measurement of angular rates in 3 perpendicular axes …