Search found 67 matches

by ET2020
December 7th, 2018, 5:46 pm
Forum: Mission Possible C
Topic: Mission Possible C
Replies: 170
Views: 43667

Re: Mission Possible C

Can you receive tasks for any actions if you don't have a start task? According to rule 3.c, "any action in the device designed not to contribute to the completion of the final action will not receive points." However, this presents a big problem for early invitationals where many people will not ha...
by ET2020
November 12th, 2018, 2:49 pm
Forum: Mission Possible C
Topic: Coin Task
Replies: 28
Views: 5371

Re: Coin Task

Any ideas for how to actually use the coin to activate another action? Last year I used a pressure sensor with an arduino, but since programmable components are banned this year, I'm not sure how to use the coin to accomplish anything.
by ET2020
November 2nd, 2018, 1:27 pm
Forum: 2019 Study Events
Topic: Dynamic Planet B/C
Replies: 245
Views: 35720

Re: Dynamic Planet B/C

Does anyone know what the best ways to split this up with a partner are? On a lot of events there are ways to split it in two but everything seems really related on this one.
by ET2020
September 15th, 2018, 10:57 am
Forum: Mission Possible C
Topic: Endothermic Task
Replies: 60
Views: 9947

Re: Endothermic Task

SInce this task is allowed the use of electricity, would a temperature switch chip be ok to use? The data sheet for one (http://www.ti.com/lit/ds/symlink/tmp708-q1.pdf) lists it as "resistor programmable", but does using a resistor really fit the spirit of this years ban on programmable electronics...
by ET2020
September 9th, 2018, 8:31 am
Forum: Mission Possible C
Topic: End Task
Replies: 115
Views: 15979

Re: End Task

My primary concern is not with "freestanding" but with "not attached." It hinges on whether you deem the magnetic force to qualify as attachment. You can make a strong case either way - an FAQ will be needed. I think they would have a very tough time saying a magnetic field counts as attachment. Te...
by ET2020
September 9th, 2018, 7:31 am
Forum: Mission Possible C
Topic: Screw Task
Replies: 44
Views: 7786

Re: Screw Task

What does "Use gravity to clearly rotate a screw" mean? Would dropping a weight that is attached by string to a screw count as using gravity, or does the screw have to somehow turn due simply to its own weight?
by ET2020
September 9th, 2018, 7:03 am
Forum: Mission Possible C
Topic: End Task
Replies: 115
Views: 15979

Re: End Task

My primary concern is not with "freestanding" but with "not attached." It hinges on whether you deem the magnetic force to qualify as attachment. You can make a strong case either way - an FAQ will be needed. I think they would have a very tough time saying a magnetic field counts as attachment. Te...
by ET2020
September 8th, 2018, 3:48 pm
Forum: Mission Possible C
Topic: Golf Ball Task
Replies: 27
Views: 6031

Re: Golf Ball Task

How could you make the ball roll out of the top of the container? Presumably the ball would only be ~50% above the water, so the bottom of the ball would be kept below the lowest lip of the container, since the water would spill out of the container above that height. Does anyone see a way around th...
by ET2020
September 6th, 2018, 1:26 pm
Forum: Mission Possible C
Topic: Balloon Task
Replies: 29
Views: 6147

Re: Balloon Task

Does anyone know what "unguided" means? Does that mean the balloon can't touch any walls?
by ET2020
September 6th, 2018, 1:24 pm
Forum: Mission Possible C
Topic: End Task
Replies: 115
Views: 15979

Re: End Task

See rule 4.c What are the limits on a "perfectly square" platform? (i.e. why wasn't the platform just defined as 5.0 cm to 10.0 cm on each side?) I think it's because they don't want it to be 5x10 cm or 7x8 cm- perfectly square means it must be 5x5 or 10x10 or 7.3x7.3 or anything else in that range...

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