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HP41 extension ports pinout
02-13-2019, 05:31 AM
Post: #13
Monte Dalrymple Offline
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Joined: Jan 2014
RE: HP41 extension ports pinout
(02-13-2019 02:44 AM)Craig Bladow Wrote:  Potentially any existing module interface could be emulated by the esp8266.
Potentially:
HP-IL module to Mass storage
Card Reader
Cassette
Extended Memory as mentioned earlier.

I like the Card Reader housing as it should provide ample room for prototyping.

The ESP8266 draws 60mA during receive and 150-215mA (mode-dependent) during transmit. Might be a challenge for N batteries.
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Messages In This Thread
HP41 extension ports pinout - eried - 02-11-2019, 02:01 PM
Try the service manual? - striegel - 02-11-2019, 06:28 PM
RE: HP41 extension ports pinout - eried - 02-11-2019, 08:51 PM
RE: HP41 extension ports pinout - eried - 02-11-2019, 11:21 PM
RE: HP41 extension ports pinout - eried - 02-13-2019, 12:22 PM
RE: HP41 extension ports pinout - ijabbott - 02-11-2019, 09:21 PM
RE: HP41 extension ports pinout - AndiGer - 02-11-2019, 07:27 PM
RE: HP41 extension ports pinout - CY-CL - 02-11-2019, 09:21 PM
RE: HP41 extension ports pinout - mfleming - 02-12-2019, 11:36 PM
RE: HP41 extension ports pinout - Monte Dalrymple - 02-13-2019 05:31 AM



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