AVT2835 B

Under the mysterious title, there is a fairly simple device imitating the flame of a natural candle. It can be 'lit' with the help of a lighter or 'extinguished' with a strong blow.
'Candle' can emit light in six different colors. The control system is extremely simple and easy to assemble. This is possible due to the use of a small ATTiny series microprocessor. 'Lighting' of the candle is done by heating the thermistor, 'extinguishing' is possible thanks to a small microphone. It records the sound of a strong blow and turns it into a signal that turns off the LED, the source of the "flame." The software is simple and effective and its most important task is to save the battery so that the result can enjoy our eyes and our surroundings for a long time.

The device is especially recommended for everyone who likes eye-catching gadgets

Selected parameters:

• light source - three-color LED
• switching - a system with a thermistor
• switching off - sound switch
• sound sensor - electret microphone
• 4.5Vdc power supply
• tile dimensions 26x21mm
• in the set a printed circuit board, a set of elements and documentation
  
  Detailed description in
  EdW 4/08