what a Christmas pressie, thanks a lot!

here is my work if it is of any interest.

Ah, thanks a lot. It is a research project so hopefully not too many people are doing this...
I am amazed and super happy there is an inversion option if I wanted to power any of it off the board tbh!

Hi, I am running a separately powered peltier bed system with the duet wifi to get down to -10 to -30 C, when the bedtemp hits -5C I immediately get -273C showing open circuit.

I have tried many different thermistor types and wiring and checked the disconnected thermistors are giving the correct resistance and not shorting at these low temps, and it always fails at -5.0C exactly, so am thinking this might be a hard minimum setting somewhere but am having no luck finding it.

thanks for any help and merry christmas

Don't worry I just got the OK to get another. To be honest I have really been putting these boards through their paces with different things and have already had one replaced, and a lot of the time the duet is the only thing that has worked so happy to buy another. cheers!

oh dear! thanks for the info. does that mean I have invalidated the warranty?

thanks for quick reply

I was yes, but have tried it without, and some cards as well which work with the other boards. The board has only been turned on and done basic moves and switch checks a while ago, now everything else has been built around it I started setup proper and same issue. With the other board it occurred during operation and I think this might have always been like this but could be wrong.
I can double check everything but am away from the lab atm

Hi,

unfortunately another board has developed a similar fault not reading any sd cards, the same as in https://forum.duet3d.com/topic/10603/sd-card-slot-failed-on-duet-wifi/2

is it ok to get a confirmation to return

thanks a lot

thanks for your help

ok thanks, would you say it needs returning then?

@dc42 said in sd card slot failed on Duet wifi?:

@isotone said in sd card slot failed on Duet wifi?:

no card shows in the platform section using M122 diagnostics

Do you mean that it reports "SD card 0 not detected" ? If so, that probably means that the Card Detect pin on the SD card socket isn't soldered down well enough. Unless you are very confident of your fine-pitch component soldering skills, please ask your supplier to replace the Duet.

Actually, apologies it does say sd card 0 detected

=== Diagnostics ===<LF>RepRapFirmware for Duet 2 WiFi/Ethernet version 2.02(RTOS) running on Duet WiFi 1.02 or later<LF>Board ID: 08DGM-917DA-G4MSD-6J9FA-3S06Q-T8VHB<LF>Used output buffers: 1 of 20 (1 max)<LF>=== RTOS ===<LF>Static ram: 25524<LF>Dynamic ram: 98080 of which 0 recycled<LF>Exception stack ram used: 312<LF>Never used ram: 7156<LF>Tasks: NETWORK(ready,1412) HEAT(blocked,1232) MAIN(running,4636) IDLE(ready,200)<LF>Owned mutexes:<LF>=== Platform ===<LF>Last reset 02:52:21 ago, cause: power up<LF>Last software reset time unknown, reason: Unknown, spinning module Platform, available RAM 6808 bytes (slot 2)<LF>Software reset code 0x00b0 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f80f BFAR 0xe000ed38 SP 0x20001efc Task 0x5754454e<LF>Stack: 0040607f 004450c4 21000000 200187cc 21006201 2001885c 20018998 00000000 00000001 00000001 200099bc a5a5a5a5 a5a5a5a5 a5a5a5a5 00407a81 00000000 00000000 20001f48 00000014 00000700 00000000 00000000 00000000<LF>Error status: 0<LF>Free file entries: 10<LF>SD card 0 detected, interface speed: 12.0MBy<Warning: Maximal number of bytes per line exceeded! Check the end-of-line settings or increase the limit in the advanced terminal settings.>