As with most things here - it depends. I have a converted wine cooler I use for some things. Bought it for $20 at a flea market. It had blow a fuse on the power supply. This appears to be a common failure. Won't handle much thermal load, but it's a Peltier unit, so it will heat as well if wired correctly. If I need quicker cooling or lower temps, a couple of pounds of dry ice wrapped in paper bags usually does the trick. Heat usually isn't a problem. I have a stock of power resistors and many, many watts of power supply.
When I need really hot I use the toaster oven I use for reflow soldering. I use the 'pico reflow' for temp control. https://apollo.open-resource.org/mission:resources:picoreflow It's Raspberry PI based and provides a lot of flexibility. I keep meaning to do a board to collect all the control bits so I don't have to hand wire them. I'm looking at the Microchip MCP9600 for the thermocouple interface. I had to do thermal shock for a project a few years back. A CO2 tank and a cheap foam cooler handled that nicely. On 9/5/2016 9:48 PM, Richard (Rick) Karlquist wrote: > As we all know, step #1 in making a clock is NOT > to build a thermometer :-) > > I thought I would check the brain trust here to see > if anyone has seen a hobbyist grade temperature > testing chamber or kit or homebrew design. <deletia> > Rick Karlquist N6RK > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. Oz (N1OZ in DFW) -- mailto:[email protected] Oz POB 93167 Southlake, TX 76092 (Near DFW Airport) _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
