Arduino I2C LCD Backpack

How to Use I2C LCD with Arduino

The classic parallel LCD sometimes post a problem for projects that use a lot of Arduino pins. The least amount of pins you can use is six, excluding the power pins and the potentiometer contrast adjust (optional) pin. Thankfully, by using an I2C LCD "backpack", the pin use can be …

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Arduino LiPo Battery Monitor actual setup

Arduino LiPo Battery Monitor

This Arduino LiPo battery monitor and charger features the TP4056 breakout board. The voltage of the battery is displayed on a Nokia 3310/5110 LCD with the Arduino Nano as the microcontroller. Materials Arduino Nano TP4056 Breakout Board Nokia 3310/5100 LCD 3.7 V LiPo Battery Connecting Wires Breadboard Introduction The TP4056 …

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NodeMCU IoT Environment Monitor

Project Overview This NodeMCU IoT project is a simple demonstration on how to send sensor data to the Internet. Powered by a NodeMCU ESP8266 microcontroller, this project is able to show temperature, humidity and atmospheric pressure to any MQTT subscriber.

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Arduino Altimeter Project Using BMP085

This Arduino Altimeter project features the BMP085 atmospheric pressure sensor by Bosch. Because atmospheric pressure is directly related to altitude above sea level, we can use this sensor to determine current height with respect to the height of the oceans. The height is given in meters and is displayed on …

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Arduino Motion Activated Alarm

Arduino Motion Activated Alarm

This Arduino motion activated alarm features a tilt sensor for detecting movements and a piezo speaker for producing the siren sound. Introduction Basically, the tilt sensor produces a high voltage when it is tilted and a low voltage when it is placed flat on a surface. The siren is produced …

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Arduino BMP085 Tutorial

The BMP085 is a relatively cheap barometric pressure sensor from Bosch. I believe this sensor is kinda old (no information about this device is found on the Bosch site) and yet it’s still used today because of its simplicity. This Arduino BMP085 tutorial covers the basics of using this device …

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ESP8266 WiFi AT Command List

Test command Command Response Parameter AT OK -   Reset Command Response Parameter AT+RST OK -   Get firmware version Command Response Parameter AT+GMR VERSION:<Param> OK Param : firmware version WiFi mode Command Response Parameter AT+CWMODE=? +CWMODE:(1-3) OK - AT+CWMODE? +CWMODE: <Param> OK Param: 1 -- station mode (client) 2 …

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