If Cayenne library is not available in your Arduino IDE library list then update your Arduino IDE. The steps for connection and setting up are available in the Cayenne (mydevices.com). After connecting the Arduino using USB, a batch/script file needs to be run on the system, otherwise Cayenne will not be able to connect to… Continue reading Arduino and Cayenne using USB
Category: Arduino
DHT 11 – Temperature and Humidity sensor
Mostly made by Aosong. Here is the datasheet. Libraries are little rare and seems to be bit old. But this one on GIT is working fine. The library has been attached here also in case the GIT one is not available for any reason. There are example codes in the library. Wiring the module is… Continue reading DHT 11 – Temperature and Humidity sensor
Using a 1.44″ Color LCD with Arduino as a display
Recently purchased a cheap color LCD from Ebay (http://www.ebay.com/itm/1-44-Red-Serial-128X128-SPI-Color-TFT-LCD-Module-Display-Replace-Nokia-5110-LCD-/310876068105?hash=item4861a85909:g:9LoAAOSwpzdWqdY~). They are really good for displaying anything (from an Arduino perspective) in color. Though the are cheap and nice, but finding the proper library for them can be a pain. It would be wise to check the details of the LCD and availability of it’s library… Continue reading Using a 1.44″ Color LCD with Arduino as a display
Arduino Voltmeter – 2 (more precise)
On some Arduino boards there is a Pin labelled as AREF or Analog Reference. This pin is very useful in cases where a stable and precise voltage reference is needed for the ADC. Practically the supplied voltage to the board can vary a bit, specially it can fall below the rated voltage depending on the… Continue reading Arduino Voltmeter – 2 (more precise)
Voltmeter using Arduino
Using precisely calculated resistors and a stable power supply, Arduino can be used to work as a voltmeter. Below is the schematic Though I used an Arduino Uno, but any Arduino can be used. (If the 3.3v versions are used then calculations will have to be done accordingly). The resister for voltage divider has been… Continue reading Voltmeter using Arduino