External ThermoCouple board

[JonAdkins]

Hello,

When I ordered my E3D HotEnd I also purchsed the ExternalThermoCouple board along with the Type K Thermocouple

http://e3d-online.com/RepRap-Spares-Ele ... ple-Boards
http://e3d-online.com/index.php?route=p ... duct_id=83

When I was looking at the installation instructions on:
http://reprap.org/wiki/ExtThermoCouple_1.0

I noticed that it makes reference to Marlin Firmware, however, it's my understanding that Rostock Max has settled on Repetier Firmware.

Does anyone know whether this thing will work with the Max and its Repetier Firmware?

Thanks in advance,

-jon

[Eaglezsoar]

I did not know that this device was even available, that being said I think that very few users if any, have experience using this.
My suggestion would be to contact Sanjay at E3D and ask if this can be used with Repetier and what the procedure is.
If it is possible that would be a better way to monitor temperatures. I assume the thermocouple gets in intimate contact with the hotend by using kapton tape.
If you find out that it can be used could you let us know how it is done. The problem with the thermistors is they are limited by the
temperature and these all metal hotends can exceed what the thermistor can handle. You already knew that because you bought
the thermocouple module.

[JonAdkins]

Thanks for the response.. I'll contact Sanjay and update the post when I hear back.

-jon

[Nylocke]

I know in Marlin, in the temp sensors area in the config file, it lists off all the supported temp sensors. I would imagine Repetier would have a similar thing? If so, then you could probably find out which value you should assign the temp sensor constant to, I would imagine it would have the k type thermocouple if it supports thermocouples.

[Polygonhell]

Repetier does have support for at least one thermocouple board, though I have no idea what's involved in setting it up.

[Nylocke]

The ultimaker uses a thermocouple by default, and a look see at the electronics on the wiki reveal how they do it: http://reprap.org/wiki/Ultimaker's_v1.5.7_PCB they have a 3 pin instead of 2 pin connection, +5V, SIG, and GND, vs what I would assume RAMBo defaults with is +5V and SIG. You'll have to do some hacking, but it should be easy enough to find a 5V GND pin thats open for it.

[Nylocke]

// What type of sensor is used?
// 1 is 100k thermistor (Epcos B57560G0107F000 - RepRap-Fab.org and many other)
// 2 is 200k thermistor
// 3 is mendel-parts thermistor (EPCOS G550)
// 4 is 10k thermistor
// 8 is ATC Semitec 104GT-2
// 5 is userdefined thermistor table 0
// 6 is userdefined thermistor table 1
// 7 is userdefined thermistor table 2
// 50 is userdefined thermistor table 0 for PTC thermistors
// 51 is userdefined thermistor table 0 for PTC thermistors
// 52 is userdefined thermistor table 0 for PTC thermistors
// 60 is AD8494, AD8495, AD8496 or AD8497 (5mV/°C and 1/4 the price of AD595 but only MSOT_08 package)
// 97 Generic thermistor table 1
// 98 Generic thermistor table 2
// 99 Generic thermistor table 3
// 100 is AD595
// 101 is MAX6675
#define EXT0_TEMPSENSOR_TYPE 1

taken directly from latest version of Repetier firmware (0.83), from Configuration.h

[Nylocke]

(You want to use sensor 100 in Repetier, or -1 in Marlin, aka the AD595)

[JonAdkins]

Awesome, thanks for the great information.

I've yet to hear back from E3D as it's the weekend, however, they'll likely give me the same information as posted.

[SanjayM]

Sanjay from E3D here!

I am afraid I am quite useless to you all on this question - never used repetier firmware myself, just marlin. The advice that Nylocke gives is sound and I would go with that. (Use sensor 100 for the AD595 on the board)

If you find a solution that works don't forget to add documentation back up to the wiki for others in the future!

[JonAdkins]

Sanjay from E3D here!

I am afraid I am quite useless to you all on this question - never used repetier firmware myself, just marlin. The advice that Nylocke gives is sound and I would go with that. (Use sensor 100 for the AD595 on the board)

If you find a solution that works don't forget to add documentation back up to the wiki for others in the future!

Thanks Sanjay.

I'm going to try this out at some point and will post results.

-jon