You want where the probe connection to the copper to be as close to the temperature of the IC as possible so the cold junction compensation works. That's why the person in the Hobbybotics example used a screw terminal connector right next to the IC. I'd tend to do the same thing.
Andrew On Wednesday, August 13, 2014 10:44:13 AM UTC-7, AltairManRich wrote: > > Wow, that’s super easy. How about the board connector to the probe? > > Rich > > -- > Rich Cini > Collector of Classic Computers > Build Master and lead engineer, Altair32 Emulator > http://www.classiccmp.org/cini > http://www.classiccmp.org/altair32 > > From: Andrew Bingham <[email protected] <javascript:>> > Reply-To: N8VEM-Post <[email protected] <javascript:>> > Date: Wednesday, August 13, 2014 at 1:34 PM > To: N8VEM-Post <[email protected] <javascript:>> > Subject: Re: [N8VEM: 18550] Re: N8VEM Analog/Digital I/O board > > Example of using the AD594/AD595 - > http://hobbybotics.com/projects/hobbybotics-ad595-thermocouple-breakout-v1-0/ > > On Wednesday, August 13, 2014 10:27:21 AM UTC-7, Andrew Bingham wrote: >> >> The only other thing I could think of would be a spot for something like >> http://www.digikey.com/product-detail/en/AD594AQ/AD594AQ-ND/612068 and >> jumpers to connect its 10mv/degC output into the input of one of the ADCs. >> Then if desired, the person building the board could populate in those >> ICs and read out thermocouples. I'd put a couple spots of those if there >> is space. Ideally they would be by the top edge of the card so the >> thermocouple can connect close by. >> >> Andrew >> >> >> On Wednesday, August 13, 2014 10:21:03 AM UTC-7, AltairManRich wrote: >>> >>> There is some spare board real-estate (i.e., the board isn’t >>> particularly dense). Anything else you think I should put on it? >>> >>> >>> Rich >>> >>> -- >>> Rich Cini >>> Collector of Classic Computers >>> Build Master and lead engineer, Altair32 Emulator >>> http://www.classiccmp.org/cini >>> http://www.classiccmp.org/altair32 >>> >>> From: Andrew Bingham <[email protected]> >>> Reply-To: N8VEM-Post <[email protected]> >>> Date: Wednesday, August 13, 2014 at 1:08 PM >>> To: N8VEM-Post <[email protected]> >>> Subject: [N8VEM: 18546] Re: N8VEM Analog/Digital I/O board >>> >>> I've been thinking of doing this for a while. It would be fun to >>> interface the N8VEM hardware with the "real world". You could even make a >>> robot.... >>> >>> Andrew B >>> >>> On Tuesday, August 12, 2014 6:48:08 PM UTC-7, AltairManRich wrote: >>>> >>>> All — >>>> >>>> I’ve designed an analog/digital I/O board for my SBC-188 computer. I’ve >>>> attached a PDF of the schematics for the group to look at and poke holes >>>> in >>>> the design. The specs include an 8-input/8-bit analog input port, a single >>>> 8-bit analog output port and a single 82C55 I/O chip with all three ports >>>> available. >>>> >>>> I’ve attached the schematic PDF. I would greatly appreciate it if >>>> someone could take a look at it and see if there’s anything obviously >>>> wrong >>>> with it. If not, I’ll prototype it and see if it actually works :-) >>>> >>>> Thanks! >>>> >>>> Rich >>>> >>>> -- >>>> Rich Cini >>>> Collector of Classic Computers >>>> Build Master and lead engineer, Altair32 Emulator >>>> http://www.classiccmp.org/cini >>>> http://www.classiccmp.org/altair32 >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "N8VEM" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/n8vem. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- > You received this message because you are subscribed to the Google Groups > "N8VEM" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > To post to this group, send email to [email protected] <javascript:>. > Visit this group at http://groups.google.com/group/n8vem. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "N8VEM" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/n8vem. For more options, visit https://groups.google.com/d/optout.
