Michael Karas wrote:
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Michael....its not just the pin to pin or rail to rail capacitance that makes these things unreliable.

Too right. Mike (K !)

When I was doing my final year degree project, I was the ONLY member of my group who soldered their project together, and I saw at first hand people with valid designs and NO success at getting the things to work - they used breadboards. Towards the end of the year, people were borrowing my iron.

Steve