Global Supply Shortage
Due to a global shortage of electronic components, we are unable to offer any kits or soldered HeaterMeter. I may have ~100 available in the next week or so (by 2021-Jul-7).
It started with the probe jacks going up from $0.45 each to $5.60 each, so I redesigned the base PCB to use a different part, and designed a new PCB to fit the replacement part and sent them off to be fabbed. Before I even received them, I ran out of other parts. Now I've reached a point where it is just impossible to find replacements and stock isn't expected at suppliers until August or even as far out as January for thermocouple amplifiers (at a 50% price increase on top of that). I'm afraid that redesigning the whole circuit board to use completely different parts is not viable either, as even new parts are in short supply and likely to run out before I could get them.
Unfortunately, this means that HeaterMeter kits are out of stock until further notice.