Scioly.org

ICs that are "resistor programmable" or that can be adjusted using an analog input in a similar fashion should be fine IMO.

But wouldn't this violate rule 3i where it says Programmable components are not allowed? Looks like FAQ time...when it opens of course.

sciolycoach wrote:

ICs that are "resistor programmable" or that can be adjusted using an analog input in a similar fashion should be fine IMO.

But wouldn't this violate rule 3i where it says Programmable components are not allowed? Looks like FAQ time...when it opens of course.

I have already submitted an FAQ for this - I am fairly confident they are referring to components which can have software installed.

sciolycoach wrote:

ICs that are "resistor programmable" or that can be adjusted using an analog input in a similar fashion should be fine IMO.

But wouldn't this violate rule 3i where it says Programmable components are not allowed? Looks like FAQ time...when it opens of course.

programmable: able to be provided with coded instructions for the automatic performance of a task.
Changing the resistance would be a physical property and I would not view that as a 'coded instruction'

OK, seems reasonable to me. For the record I agree with you, and I like your argument about the changing resistance. I just like the idea of an FAQ on this because I see different event supervisors possibly interpreting this differently.

I would take the cautious approach and use an analog-output thermometer.

Even better, use an old fashioned red thermometer plus some sort of photogate to detect when it goes below a certain level.

Jacobi wrote:I would take the cautious approach and use an analog-output thermometer.

Even better, use an old fashioned red thermometer plus some sort of photogate to detect when it goes below a certain level.

I don't see how that changes anything... The only difference is that "programmable" may not be part of the electronics description. It would still require some similar method for triggering the next action

can peltier device be used to have the endothermic reaction occur?

ScottMaurer19 wrote:

sciolycoach wrote:

ICs that are "resistor programmable" or that can be adjusted using an analog input in a similar fashion should be fine IMO.

But wouldn't this violate rule 3i where it says Programmable components are not allowed? Looks like FAQ time...when it opens of course.

programmable: able to be provided with coded instructions for the automatic performance of a task.
Changing the resistance would be a physical property and I would not view that as a 'coded instruction'

Welp. I'm somewhat annoyed by this latest FAQ.

PM2017 wrote:

ScottMaurer19 wrote:

sciolycoach wrote:
But wouldn't this violate rule 3i where it says Programmable components are not allowed? Looks like FAQ time...when it opens of course.

programmable: able to be provided with coded instructions for the automatic performance of a task.
Changing the resistance would be a physical property and I would not view that as a 'coded instruction'

Welp. I'm somewhat annoyed by this latest FAQ

It only says that you can't use something marketable as resistance programmable so I don't see why building a similar circuit with a 555 or MOSFET or something similar would be disallowed.

Our team is currently thinking of using a Peltier cooler and detecting the change in the heat with a thermistor. However, I can't figure out whether this would be endothermic. The cooler definitely loses heat so by definition, the thermistor touching it would be gaining heat (so endothermic). Would this be valid or is too much of a stretch?