Jump to content

Pepper's Photo

Pepper

Member Since 9 Sep 2017
OFFLINE Last Active Nov 15 2017 7:10 PM

#3878928 NanoPEB is not always recognized.

Posted by Pepper on Sun Oct 29, 2017 8:26 AM

 

 

On a side note, I see that you have the PiDP-8 kit :) I build one myself and I have it running Seti@home 24/7  :grin:

Yes, I have the PiDP8/i running a Mystic Telnet BBS. I also have the "blinkin lights" going ;)

I occasionally play Adventure on it also.

I'm looking forward to building his PDP11 clone when that comes out.




#3872574 NanoPEB is not always recognized.

Posted by Pepper on Fri Oct 20, 2017 6:44 PM

I took my 12v regulated Bench power supply and dropped the voltage down to 5V with a DC-DC Buck converter. Still the same symptom. So that rules out the PSU as that's been 3 different sources.

Cleaned the sidecar board contacts with some fine sandpaper. No joy.

It's not going to beat me ... well hopefully not ..lol.




#3868457 NanoPEB is not always recognized.

Posted by Pepper on Sun Oct 15, 2017 4:18 PM

Do you power up the nanopeb first, then the computer?

Yep, I power it up with a 5V/2A supply before turning on the computer.

It randomly works.... very randomly. I'm hoping that replacing the CF reader will help. We will find out.




#3868153 NanoPEB is not always recognized.

Posted by Pepper on Sun Oct 15, 2017 8:28 AM

 

For me, it is a common issue. I "repaired" some by changing the cardreader...

 

You might be onto something  ;) .. I found a sticker on the underside of the CF reader saying "Bad"... Got to love eBay used purchases!

 

Attached File  IMG_20171015_095217.jpg   945.18KB   4 downloads

 

Also, I have an extra wire soldered onto the main board. I don't see it in other pictures of the NanoPEB. It looks to be passing a Ground connection from ^7 on the 74HC000 to the console connector. Should it be there ?

 
Attached File  IMG_20171015_095137.jpg   1.02MB   4 downloads



#3867803 NanoPEB is not always recognized.

Posted by Pepper on Sat Oct 14, 2017 5:57 PM

How about... gallery_35324_1027_10841.png   :?:

It's getting close ! I've mostly been banging my head against the wall.




#3867800 NanoPEB is not always recognized.

Posted by Pepper on Sat Oct 14, 2017 5:56 PM

Another option is to reseat the cardreader on the board, or to change it (I once got them for less than 10eu on eBay)

Ok, thanks. I found one on eBay for $6. Hopefully that'll fix the issue. I did notice that it does not read the CF when the TI is powered up. It used to. Is this a common issue for the NanoPEB?