Voltlog #123 – Buzzer Comparison

In this video I am measuring the output level of the various buzzer that you can find on ebay, banggood or aliexpress.

 

Get the UNI-T UT353 Sound Meter from these sources:

Here are all the buzzers shown in this video:

Voltlog #71 – Electronic Touch Musical Keyboard Kit

A while ago I saw this touch musical keyboard kit on banggood and it seemed interesting enough to order one. It turns out the kit is using a single atmega8 to do all the touch sensing (8 ch) and play the tunes accordingly. Although not very useful for me it sure was fun to assemble and play with.