Before you can use the DHT11 on the Arduino, you’ll need to install theDHTLib library. It has all the functions needed to get the humidity and temperature readings from the sensor. It’s easy to install, just download the DHTLib.zip file below and open up the Arduino IDE. Then go ...
Sleep Modes allow the user to stop or turn off the unused modules in the Microcontroller which significantly reduce the power consumption. Arduino UNO, Arduino Nano and Pro-mini comes with ATmega328P and it has a Brown-out Detector (BOD) which monitors the supply voltage at the ...
The module (Micro SD-Card Adapter) is a Micro SD card reader module, through the file system and the SPI interface driver, SCM system to complete the file read and write Micro SD-card. Arduino users can directly use the Arduino IDE comes with an SD-card library card to complete the ini...
The NewPing library also makes it easy to interface with ultrasonic sensors while using only 1 I/O pin. This can be handy if you have very few I/O pins available or if you want to use a 3 pin ultrasonic sensor like theParallax Ping. To create a 3 pin setup (GND, 5V and SIG) yo...
of a USB to TTL 3V3 Serial Cable, it is also possible to program the ESP-01 using an Arduino UNO, usingthis circuit, but don't use the UNO 3V3 power pin as the ESP-01's power supply it is only rated at 150mA and can cause problems when trying to debug a project that uses ...
Here’s a video you can watch of me wiring up the relay to see it in action: Another really useful project is a relay controlled power outlet box. This will let you plug any appliance into the outlet and control it with your Arduino without cutting into any power cords. You can also ...