The Relay Shield features four high quality relays and provides NO/NC interfaces, four dynamic LED indicators to show the on/off state of each relay, and the standardized shield form factor to provide a smooth connection to Arduino compatible boards. Product …

In this example we will connect an RGB led to a Digispark, a quick recap of the basic Digispark we ware using in this example XGHF-GY Digispark Kickstarter Miniature Development Board TINY85 – Blue – $4.65 The Digispark is an …

In this example I decided to take a look at one of the Digispark clone boards that are available. These boards are based around the ATtiny85 which have the micronucleus bootloader installed, this means you can then use the Arduino …

In this example we will add bluetooth support to our Arduino, there are several low cost modules labelled either Hc-05 or HC-06. Here is a picture of one of them In this example we will connect one of these modules …

The BME280 is a humidity sensor features an extremely fast response time which supports performance requirements for emerging applications such as context awareness, and high accuracy over a wide temperature range. The pressure sensor is an absolute barometric pressure sensor with …

MCP4725 is a single channel, 12-bit, voltage output Digital-to-Analog Converter with integrated EEPROM and an I2C Compatible Serial Interface. Features 12-Bit Resolution On-Board Non-Volatile Memory (EEPROM) ±0.2 LSB DNL (typ) External A0 Address Pin Normal or Power-Down Mode Fast Settling …

The AM2301  is a wired version of the DHT21, in a large plastic body. Specifications: Type: AM2301 Accuracy resolution: 0.1 Measurement range: 0-100%RH Temperature measurement range: -40℃ ~ +80℃ Humidity measurement precision: ±3%RH Temperature measurement precision: ±0.5℃ This Sensor has …

I recently tried out an example for a DS18B20 temperature sensor. The code example mentioned 2 libraries, so I went forward and downloaded them and imported them into my IDE but was disappointed to see an error like this when …

In this example I wanted to compare the readings of a DHT11 and a DHt22 (AM2032) temperature sensor. The sensors were positioned side by side with the same length of wire connecting them to my Arduino. Basically i was keeping …

MQ2 CO 200 ~ 10000 ppm Alcohol 100 ~ 2000 ppm CH4 5000 ~ 20000 ppm Propane 200 ~ 5000 ppm LPG 200 ~ 5000 ppm Butane 3000 ~ 5000 ppm Smoke 200 ~ 10000 ppm H2 300 ~ 5000 …

MQ-135 gas sensor is a hazardous gas detection apparatus for the family, the environment, suitable for ammonia, aromatic compounds, sulfur, benzene vapor, smoke and other gases harmful gas detection, gas-sensitive element test concentration. Air quality sensor is for detecting a wide …

MQ-9 gas sensor has high sensitity to Carbon Monoxide, Methane and LPG. The sensor could be used to detect different gases contains CO and combustible gases, it is with low cost and suitable for different application. The sensitivity of the …