Build an FM radio with alarm clock.
Project tutorial by Tittiamo
Compass lamp that changes color by rotating.
Project showcase by Tittiamo
Luminous ball, with clock and thermometer, controlled by Blynk.
FM radio built using Arduino, RDA5807M, Tiny RTC, PAM8403 class D amplifier modules, and TR028 touch panel.
Project tutorial by Saulius Bandzevičius
Library & sketches to control the TEA5767 FM radio module, using Arduino and an I2C LCD display. Release 02.00.00 is an arduino library.
Project showcase by diamond2016
Portable distance detection device using an Arduino and an ultrasonic sensor.
Project tutorial by Viktor S
I've never used this type of sensor, but from what I've read it does not have to be very difficult (https://www.instructables.com/id/How-to-use-MQ2-Gas-Sensor-Arduino-Tutorial/).
You must connect it to an analog input of arduino and read the data.
Create a new field in "thingspeak" and transmit the data as for the temperature
The code was written for a 20x4 Display (20 columns, 4 rows).
Row 1: Day
Row 2: Dates
Row 3: Hour
Row 4: Alarm
If you want to use a 16x2 you have to change the Arduino code and the visualization.
Unfortunately, in the material list, I did not find the standard 20x4 Display, but in the notes below, I specified "LCD Display 20x04 with I2C module"
You can use any Display 20x4 with I2c module, without changing the code, at the exclusion of the I2C address of the display, mine is 0x27, replace this value with yours, to find your suggest to read "http://playground.arduino.cc/Main/I2cScanner ".
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