NP-41 Emulator (may be)
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03-08-2018, 12:52 PM
Post: #374
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RE: NP-41 Emulator (may be)
(03-05-2018 07:35 AM)sc05027 Wrote: I hope it is not too late. I would like to get a set of NP-41. If it is avaliable, please let me know.The sale is closed for now, until I can find a way to ensure reliability. Time for another update. I had sent out some replacement units. They are not the latest PCB. They are instead the batch 2 PCBs and a repaired batch 1 PCB (v3). The v4 boards had been running for 6+ weeks and they are the most reliable units I have. There were setbacks on the newer PCBs. I had received the v5 boards 5 weeks ago and the adjustments I made to the LCD through hole size were wrong, and the boards are of wrong color. I had to abandon them and correct / re-order another set, which took 2 weeks to arrive this time. These new boards had extensive ground planes and I had assembled 3 boards, of which 2 failed after a few days. I tried to re-work them and they are not reliable. The same issue as previous failed boards and this is an intermittent problem. Everything works fine for a day, put it to sleep and it reboots itself, consumes 10+mA and keys acts up. They are worse than the batch 2 (v4) boards and they are not to be used. I am starting a new board design w/ a different layout software. Fine and more detail traces will be tried. Also put up the latest firmware on the share drive 180118: . new bootloader, no more firmware corruption during battery sway . [ON] + [D] toggles true and fast LCD display update, do 'CAT' to see the difference **** perform [ON] + [B] to relocate new bootloader to appropriate memory space 180308: . fix multiple ROM loading issue, where 2nd ROM onward fails. * for the ROM loading fix, if you do not want to update firmware, there is also a workaround to load multiple ROMs. That is, you need to load one ROM, reboot the unit, re-connect serial and load the next one. This way multiple ROMs can be loaded w/ pre 180308 firmware. ** if you have the original unit and have never update the firmware, you MUST upgrade 1st to 180118 before upgrading to 180308. This is because we need the new bootloader to subsequent firmware updates. |
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