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Showing content with the highest reputation on 02/13/2020 in all areas

  1. 24LC512 - 512K EPROM 8 Exactly, you need 7 and one 256, because the last bank is for ensembles and only needs 256kb but it's no problem to use a 512, it's just more expensive. The Voltage Regulators depend on which SIDs you use. Are you sure you need 2 7809? I'm too lazy to check this but I can't imagine that you need 2.
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  2. When interfacing a Joystick, Modwheel or Pitchbender it is sometimes found that the voltage range on the potentiometer output is well inside the range of the Core ADC input. This can often be overcome with digital calibration in the firmware (e.g MIDIbox KB) in some cases there is extreme loss of resolution. Presented here is a circuit to overcome this to give the ADC the full range (in this case 0..3.3V) even though the range of the potentiometer is well inside this. The design process is very easily done following this app note:sloa097.pdf 230.01K 12 downloads
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