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Re: Coin Task
Posted: November 12th, 2018, 5:43 pm
by windu34
ET2020 wrote: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.
You don't need an integrated circuit to use electrical components to "detect" the coin. There are non-mechanical ways to recognize the coin has landed somewhere.
Re: Coin Task
Posted: November 12th, 2018, 6:12 pm
by PM2017
I just did a quick 30-second test, and copper foil tape, folded in on itself will hold its shape, but will easily deform due to the weight of the coin. You can just re-adjust after the run.
Re: Coin Task
Posted: November 13th, 2018, 4:43 am
by ScottMaurer19
PM2017 wrote:I just did a quick 30-second test, and copper foil tape, folded in on itself will hold its shape, but will easily deform due to the weight of the coin. You can just re-adjust after the run.
Shhh don't give away my secrets
I would recommend looking at some of last year's devices. I would think some of them (like mine) used a pretty consistent method for the quarter that can be utilized without a microcontroller.
Re: Coin Task
Posted: February 22nd, 2019, 7:44 am
by Shr3D
Couldn’t you just have the coin land onto two pieces of wire, completing the circuit? Idk, thoughts on this?
Re: Coin Task
Posted: February 22nd, 2019, 7:57 am
by CookiePie1
Shr3D wrote:Couldn’t you just have the coin land onto two pieces of wire, completing the circuit? Idk, thoughts on this?
Yes you can, but the real issue is whether you can use that task reliably.
Re: Coin Task
Posted: February 22nd, 2019, 8:33 am
by C8H10N4O2!
CookiePie1 wrote:Shr3D wrote:Couldn’t you just have the coin land onto two pieces of wire, completing the circuit? Idk, thoughts on this?
Yes you can, but the real issue is whether you can use that task reliably.
Aluminum foil. Its flat, conductive. Have the coin land on 2 strips which are then connected the wire. I've seen this done, and it seems to work consistently
Re: Coin Task
Posted: February 22nd, 2019, 10:33 am
by jinhusong
C8H10N4O2! wrote:CookiePie1 wrote:Shr3D wrote:Couldn’t you just have the coin land onto two pieces of wire, completing the circuit? Idk, thoughts on this?
Yes you can, but the real issue is whether you can use that task reliably.
Aluminum foil. Its flat, conductive. Have the coin land on 2 strips which are then connected the wire. I've seen this done, and it seems to work consistently
We just wrap a small flat wood with bare wires of +, -, +, -, +, -. So no matter where the coin lands, it will connect the circuit. Never failed.
Re: Coin Task
Posted: April 30th, 2019, 5:55 am
by trdd
Coin Task video with details and explanation.
Feel free to copy any ideas from here:
https://youtu.be/0mN_WSjjbes
Re: Coin Task
Posted: April 30th, 2019, 6:15 am
by Unome
Pretty impressive. I'm sure we'll see a few imitations at Nationals.