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cathode for HP91
07-31-2015, 08:34 AM
Post: #7
RE: cathode for HP91
(07-31-2015 08:04 AM)PANAMATIK Wrote:  Although it would need much less work than the new ACT and the concept would be rather easy, the development of a microcontroller based cathode driver is too expensive concerning SMD manufacturing costs for small quantities.
Maybe an Arduino Nano or similar would do. I guess you'd need 14 IOs for the display and keyboard and some control lines (3?).
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Messages In This Thread
cathode for HP91 - isanchez - 07-30-2015, 06:29 AM
RE: cathode for HP91 - Katie Wasserman - 07-30-2015, 04:11 PM
RE: cathode for HP91 - isanchez - 07-31-2015, 04:59 AM
RE: cathode for HP91 - Katie Wasserman - 07-31-2015, 05:09 AM
RE: cathode for HP91 - PANAMATIK - 07-31-2015, 08:04 AM
RE: cathode for HP91 - Thomas Radtke - 07-31-2015 08:34 AM
RE: cathode for HP91 - Katie Wasserman - 07-31-2015, 04:04 PM
RE: cathode for HP91 - Thomas Radtke - 07-31-2015, 05:34 PM
RE: cathode for HP91 - isanchez - 07-31-2015, 08:27 AM
RE: cathode for HP91 - Etienne Victoria - 08-02-2015, 08:35 AM
RE: cathode for HP91 - isanchez - 08-04-2015, 07:21 AM
RE: cathode for HP91 - d b - 08-04-2015, 02:25 PM
RE: cathode for HP91 - TASP - 08-05-2015, 05:22 AM



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