To be a little entertained when tinkering, we build ustoday a small FM stereo radio using a slightly older, but extremely inexpensive, TEA5767 breakout board. However, by this time it will be a little more complicated because we need to solder and have to build some adapters.
Since Arduinos have not directly the possibility to save time, we expand our Arduino with a small DS1307 Real-Time-Clock (RTC) board. Which can, battery powered, “remember and count” the time and the date.
Tiny RTC (DS1307) Real Time Clock module and an Arduino Uno
Today, we build us an animated and programmable mood lamp that can be nicely used as a functional decoration. This tutorial is understood only as a suggestion, especially the design of course is always in the eye of the beholder.
Mood lamp with an Olimexino-32U4 (Arduino Leonardo compatible) and a digital RGB LED Strip (5050 LEDs with WS2811 controller) – unfortunately, the beautiful color effect is not so good to see in the photo
In this a bit more extensive project we deal with several factors on the subject of indoor climate. We will measure the temperature, humidity and air pressure, saving maximum and minimum values of our measurements and show it on a TFT display.
Simple indoor climate monitoring with an Arduino, BMP085, RTC, DHT11
To give our Arduino the chance to tell sometimes what’s actually going on and do not always use the serial monitor, it is time to buy him a small display. Fortunately, there is a wide range of available shields and breakout boards. In this case, we use a 1.8 inch TFT color display with 128×160 pixels (HY-1.8 SPI, the name on the board), equipped with an SPI interface, which gives us the opportunity compared to displays with parallel interface, to have more free ports for other applications available.
A 1.8 inch TFT color display (HY-1.8 SPI) and an Arduino
Learning from nature can also be used in electronics. Today we use the capabilities of the bat around with the HC-SR04 distance sensor to detect obstacles or measure the distance of an object using ultrasonic waves.
The HC-SR04 ultrasonic distance sensor and an Arduino
The presented RGB Strip is equipped compared to “normal” strips with the property of being able to control each LED individually, which means that not only one color can be displayed simultaneously on the strip, but even complete color transitions at the same time.
Digital RGB 5050 LED strip with WS2811 controller (WS2812)