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A few design changes.

VOLUME CONTROL

Someone who is interested asked about volume control as some 8-bits are sensitive to volume of playback. I had thought about this originally, as I know from experience that the MSX can be tricky, but did nothing more other than to adjust the potentiometer on the amp before I placed the ArduiTape into its housing. However if you are using this on different computers this could be annoying so I've decided to modify the amp.


If you want to do this you will need to get a 10k Ohm variable resistor/amp. Logarithmic is the best type for volume control but linear is cheaper. Also try to get a 3 pin mono as they fit best.


This is the type I got for testing purposes.












Desolder and remove the existing potentiometer, very carefully and add 3 single pins into the holes left behind.











Once that is done take 3 dupont wires and remove the connectors off one end and solder the wires to the pins on the new potentiometer. Connect the wire from the middle pin to the middle pin on the amp board and connect the outside pins on the potentiometer to the outside pins on the amp.

This is what mine looked like after I'd done it. obviously the potentiometer is too big but I wanted to test the theory first.










Redesign Of The Button Board



For the Button Board I have redesigned it so that the buttons are on the under side as that way they will fit more snug in to the housing and will protrude more for easier use.






 Bottom View Of the Button Board.





Top View Of The Button Board






Pin connections labelled.





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