You are currently browsing the British Engineering Systems weblog archives for April, 2009.
- Boxford Duet (5)
- intelligent vibrator (43)
- Stuff (26)
- 10/10/2009: Here it is.....
- 30/09/2009: First Prototype unit finished. Most spiffing!!
- 26/09/2009: Apoint of stability.
- 12/09/2009: Mark 2 PCB
- 04/05/2009: Wobble found. Design mod required. Oh posterior!!
- 08/04/2009: Population: complete, Fault chasing: still in high speed pursuit.
- 04/04/2009: Population growth.
- 02/04/2009: Little green boards.
- 05/03/2009: The grass is cheaper on the other side
- 01/03/2009: Incremetal progress
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Archive for April 2009
Population: complete, Fault chasing: still in high speed pursuit.
08/04/2009 by peter.
As can be seen in the picture below i have finished populating the first board.
(ignore the soldering blocks behind, my bench is currently covered with jewellery making stuff and vibrator making stuff)
faults so far found:
Power transistor not connected to the correct pin of uC
Tracks to voltage regulator end before they arrive
Opamps wired up back to front
pressure transducer acting as a theremin so something is wired up a bit wrong.
Always happens though, first PCB version never works. Looks quite professional though!
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Population growth.
04/04/2009 by peter.
Apart from the fact that I would appear to have forgotten to order some of the bits (or I have an envelope of them somewhere safe) The population of boards is coming along. as can be seen in the photo below.
So far I have noticed 2 minor screw ups in the design and a few bits that can be optimised. That’s what happens when you make PCBs. You spend a day looking for faults and then you find them within three seconds of open the envelope of boards.
With a bit of luck it will all work once the rest of the bits arrive.
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Little green boards.
02/04/2009 by peter.
Finally the boards have arrived. now to populate them
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