I'm making progress. Hardware interface is complete (interface board is re-designed). I'll probably order 25 boards.
Working on a mounting design. I think I found a good cheap project box that fits nicely on the hottop. I also have a touchpad on order that will hopefully go to the right of the display.
USB interface for datalogging and PC control.
Now the plan is to see how fast I can get to 1st crack.... baseline the hottop so I'll know how fast of ramp is possible.
I'm guessing you too believe the widget is impractical for the gas-heated Sono?
Nope, I think it would be perfect for the sono. Two tricks to that.
1) - be able to adjust the gas pressure (I have a device that will do it, but no Sono to test it on (since you sold mine)
2) - reading bean temperature ( might be easy to just poke one down in the beans and have a thermocouple jack to plug it in.