NP-41 Emulator (may be)

[Guenter Schink]

(12-19-2017 01:03 PM)Chris Chung Wrote:  

(12-18-2017 07:32 PM)Guenter Schink Wrote:  Hi Chris,
received my unit, thank you. There is an odd behaviour with ATAN, ASIN and ACOS: for most values the calculater will just show the command and then freeze. Switching it off and on, again shows the command, still frozen. Switching it off and doing a "Memory lost" brings it back to life.

Günter

Edit: Key test "x" toggles between all segments dimmed plus K=41 and then K=41 only. "R/S" shows all zeros first second push K=48

Hi Guenter,
Sorry you also got a lemon. It appears your firmware / register memory got messed up and that the "Memory Lost" is not fixing it (perhaps outside emulator scope). Similar to what Sylvain is experiencing. I did manage to reproduce this condition and is not yet able to find out why. And it could be reset by re-flashing the firmware via bootloader.
But of course if we don't know the cause of it, this is not a solution.
I had ran out of replacement units and had made a new unit yesterday. Although it appears good, I am losing confidence with the builds and I will test / use it for a week before shipping the replacement to you.

Seems this is going to become a nightmare for you. I really appreciate your dedication to produce these nice gadgets. I'm afraid you would not have offered this to all of us, if you knew before. I will of course send the "lemon" back to you. Perhaps you can rectify it, so it would be of use for someone else. Wrt the other unit, don't rush, take your time as required. Better enjoy the holidays

Günter