Friday, August 2, 2013

Meters and Front Panel Mockup

Mocked up the front panel of what will be the control unit...


...only to discover that the (Anders) panel meters which arrived were nothing short of disappointing; one seemingly having spontaneously fallen apart in its box, the other having no usable zeroing ability. Amazingly shoddy build quality given the price. Have since opted for a pair of rather larger Simpson meters, requiring a rethink of the layout...

The panel shown is just temporary 3 mm foam board - but allows lots of latitude with getting the layout right. In time it'll be replaced by a 3 mm aluminium panel. The rack is a 200 mm deep 19 inch shelf rack. Power supply board visible on the left - the card guides on the right will take the ramp board and so on. Expensive Swiss switches to the right.

Here's the circuit which drives the meters...


And the actual board...

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