LCD Meter

David built this LCD meter from the ground up using a 40 pin controller IC driving a LCD panel. It works quite well as a DC voltmeter.

BANG!

Too much Ozzie....we were running fine at full volume until we decided to measure the supply current and managed to short something out....BANG!....spares are becoming a more important purchase consideration...

Power Supply for Audio Amp

David built this new supply over the weekend to power an audio amp based on the STM TDA7293 IC. With a peak output of 100 watts it's amazing what $5.78 can buy....I bet there is some profit margin left in consumer audio products...The supply provides +/- 30vdc for the amp plus other outputs.

Tri-Color Surface Mount LED

Located in the center of the green adapter board is a tiny surface mount LED; a red, green and blue device. David successfully soldered this by hand. No doubt his eyes are better than mine and his hand much steadier!