In this example we will connect an LM35 temperature sensor to our Espruino The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional…
MCP9808 digital temperature sensor example The MCP9808 digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.5°C (max.) accuracy. The MCP9808 comes…
In a previous post we showed how to connect a MAX 7219 7 Segment display - Espruino and MAX7219 7 segment display example . Here are some more examples…
The MAX7219 is a compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64…
In the previous example using an HC-SRO4 ultrasonic sensor - Espruino and an ultrasonic distance sensor, we looked at displaying the distance to an object but just displayed…
The HC-SR04 is used to measure distances by using ultrasonic sounds. It works by sending out a burst of ultrasound and listening for the echo when it…
The DS18B20 is a temperature sensor that can be used in various simple projects. This part uses the 1 wire bus and you can connect multiple sensors up…
The PCF8574 is an 8 bits I/O port expander that uses the I2C protocol. Using this IC, you can use only the SDA and SCL pins of…
The MLX90614 is a non-contact infrared thermometer with a measurement range from -70 to +380 degree Celsius. Just connect the four leads to your MBed supported device and…
The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16g. Digital output data is formatted as 16-bit twos…
In this example we use the DHT22 (or AM2302) humidity/temperature sensor and the Arduino UNO board to read data and print it out to the serial monitor. The…
A light-dependent resistor is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. A photoresistor…