vending machine is working! - sudo-discuss

Morgan Allen

19 May 19 May

9:18 a.m.

I have ESP8266 dev boards to donate! On Fri, May 6, 2016 at 7:50 PM, Jake <jake(a)spaz.org> wrote:

as I said in February, the vending machine is basically at operational status: https://sudoroom.org/pipermail/sudo-discuss/2016-February/011770.html and as I said in April, I now know how we will perfect the motor homing issue: https://sudoroom.org/pipermail/sudo-discuss/2016-April/011894.html but for now, it works well enough that I was able to dispense one of the candy bars in the machine without cheating and opening up the machine. I didn't even need to power cycle it, the beaglebone in there was just up and working already! thanks to rcsheets who stocked the vending machine with delicious candy bars! products 1030, 1031, and 1032 by the way let me know if you want to help get the vending machine working better. we need simple hardware work, complex hardware work, and software work! -jake _______________________________________________ sudo-discuss mailing list sudo-discuss(a)lists.sudoroom.org https://sudoroom.org/lists/listinfo/sudo-discuss

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Jake

12:35 p.m.

don't you expect to ever visit sudoroom again? Part of why i left it with you was so that you would have another reason to come visit. you can use the robot to mill out something huge. It presently has a 1/4" diameter endmill mounted on a 3/4 HP router motor, and there's a working plasma cutter right next to it for cutting through metal like butter. let me know when you want to come up. I would be insane to drive to maker faire when i can just ride my bike. -jake On Thu, 19 May 2016, Adam Munich wrote:

...

The tray is still in my garage, if y'all want to pick it up after makerfaire. - - - - Begin automatically generated footer - - - - Weblog: http://adammunich.com Cell: +1-650-452-0554, M-F 10a - 8p PST PGP Public Key: https://pgp.mit.edu/pks/lookup?search=adam+munich On Thu, May 19, 2016 at 9:18 AM, Morgan Allen <morganrallen(a)gmail.com> wrote:

I have ESP8266 dev boards to donate! On Fri, May 6, 2016 at 7:50 PM, Jake <jake(a)spaz.org> wrote:

as I said in February, the vending machine is basically at operational status: https://sudoroom.org/pipermail/sudo-discuss/2016-February/011770.html and as I said in April, I now know how we will perfect the motor homing issue: https://sudoroom.org/pipermail/sudo-discuss/2016-April/011894.html but for now, it works well enough that I was able to dispense one of the candy bars in the machine without cheating and opening up the machine. I didn't even need to power cycle it, the beaglebone in there was just up and working already! thanks to rcsheets who stocked the vending machine with delicious candy bars! products 1030, 1031, and 1032 by the way let me know if you want to help get the vending machine working better. we need simple hardware work, complex hardware work, and software work! -jake _______________________________________________ sudo-discuss mailing list sudo-discuss(a)lists.sudoroom.org https://sudoroom.org/lists/listinfo/sudo-discuss

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Jake

12:54 p.m.

i'm trying to think of the right way to generate a 5-10 volt 32KHz squarewave in series with the 12v power supply for the motors, so that an analog input can measure the amplitude of AC detected across a series resistor. The homing switches of the motors have a capacitor that decreases their impedance at 32KHz when they're "home". the control circuit for the motors is a row/column array, so I also need to lay that out. #define NUMROWS 5 #define NUMCOLS 10 byte rows [NUMROWS] = { 13,12,11,10,9 }; // connect rows to positive byte cols [NUMCOLS] = { 8,7,6,5,4,3,2,A2,A3,A4 }; // connect cols to negative -jake

...

On Thu, May 19, 2016 at 9:18 AM, Morgan Allen <morganrallen(a)gmail.com> wrote:

I have ESP8266 dev boards to donate! On Fri, May 6, 2016 at 7:50 PM, Jake <jake(a)spaz.org> wrote: > > > as I said in February, the vending machine is basically at operational > status: > > https://sudoroom.org/pipermail/sudo-discuss/2016-February/011770.html > > and as I said in April, I now know how we will perfect the motor homing > issue: > > https://sudoroom.org/pipermail/sudo-discuss/2016-April/011894.html > > but for now, it works well enough that I was able to dispense one of the > candy bars in the machine without cheating and opening up the machine. > > I didn't even need to power cycle it, the beaglebone in there was just > up > and working already! > > thanks to rcsheets who stocked the vending machine with delicious candy > bars! products 1030, 1031, and 1032 by the way > > let me know if you want to help get the vending machine working better. > > we need simple hardware work, complex hardware work, and software work! > > -jake > _______________________________________________ > sudo-discuss mailing list > sudo-discuss(a)lists.sudoroom.org > https://sudoroom.org/lists/listinfo/sudo-discuss -- -----BEGIN PGP PUBLIC KEY BLOCK----- Version: OpenPGP.js v.1.20121007 Comment: http://openpgpjs.org xsBNBFG3btUBB/9+/WJNOSIuc/praKPaPOweqXV5s7PGRD+HAnNWF/19YAY3 AFtfeoelhhY4sMJoobTaJzcZojznZ1kl/7UuuYCnbJO3Z9kaSMVrVxEZMSLe YmW8Hc4ZsTnl9f05DQFy8ABpAvMLmXJQXh63BbfzjFqNbSWQfLhrubSM2Elq xmN6EsmRyAuEeYlSnal+Di2MlViohpCbbagE2D6AZTUECIamTib6+DuLG4XO b4GGKHR9TXu2qS1VH6hqcvdEz2MDE5OqZzAnBgcF2dvcOdTk9gAOoR1T+qKj IJtg2X0ETbxcPqEXQoXE8VrxN0MLT5JQKTg26+csU4P2w0rEWsUsJombABEB AAHNJU1vcmdhbiBBbGxlbiA8bW9yZ2FucmFsbGVuQGdtYWlsLmNvbT7CwFwE EAECABAFAlG3btwJEG9pFLKaVEfeAAD7hwf+K8LN/kfgi8GTRLiTcuM+hSbm uAeiBY+VaJIQFLzoFlt8A0hBlLNPFNNmUDxdPrMErdHgZ7HtJW/6RANuBTti 5hr3EBguH1GQyK7BbUqJGvaEX4UNRej3uyX3ufXDsIB/3NsKaTyyu+SO0+Hv Cn2DwmlfSXcPhoarx6Turizn/WwgtTN3tqrMWxxiCKWydLH5xYuz+23BLMdc oF/zkbF+7ddFhmyfiFh4Ej9//tsfwPj2cACU3uLTrcwCo7IxUtkrqMF/fhlm LEqjhzDDjq9v7GNWb/5xB2xgTaucJ7/ljuS8nPlZqwCI8NlTgSqC8nyVLyjS yVtOzkItcS0UqyW1Mg== =V/Ia -----END PGP PUBLIC KEY BLOCK----- _______________________________________________ sudo-discuss mailing list sudo-discuss(a)lists.sudoroom.org https://sudoroom.org/lists/listinfo/sudo-discuss

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Jake

1:16 p.m.

i've already got the circuit basically figured out in my head, i just need to lay it out and then assemble it. basically it's an atmega DIP chip, 15 N-FETs, 5 P-FETs (turned on by N-FETs), and an I-bridge (probably an IXDD604PI mosfet driver) to generate the squarewave, whose output connects to the - side of an isolated 12VDC power supply for the motors. whoa, i just realized i can tap directly from the transformer on a 12VDC switching power supply to get the voltage i need - 12VDC plus a squarewave at 32 KHz. No need for an I-bridge or anything, just a little 22ohm series resistor whose AC is capacitively coupled to one of the analog inputs for detecting homing. On Thu, 19 May 2016, Adam Munich wrote:

...

try http://www.falstad.com/circuit/, it's what I use when designing analog filters / simple signal stuff - - - - Begin automatically generated footer - - - - Weblog: http://adammunich.com Cell: +1-650-452-0554, M-F 10a - 8p PST PGP Public Key: https://pgp.mit.edu/pks/lookup?search=adam+munich On Thu, May 19, 2016 at 12:54 PM, Jake <jake(a)spaz.org> wrote:

i'm trying to think of the right way to generate a 5-10 volt 32KHz squarewave in series with the 12v power supply for the motors, so that an analog input can measure the amplitude of AC detected across a series resistor. The homing switches of the motors have a capacitor that decreases their impedance at 32KHz when they're "home". the control circuit for the motors is a row/column array, so I also need to lay that out. #define NUMROWS 5 #define NUMCOLS 10 byte rows [NUMROWS] = { 13,12,11,10,9 }; // connect rows to positive byte cols [NUMCOLS] = { 8,7,6,5,4,3,2,A2,A3,A4 }; // connect cols to negative -jake

> On Thu, May 19, 2016 at 9:18 AM, Morgan Allen <morganrallen(a)gmail.com> > wrote: >> >> >> I have ESP8266 dev boards to donate! >> >> On Fri, May 6, 2016 at 7:50 PM, Jake <jake(a)spaz.org> wrote: >>> >>> >>> >>> as I said in February, the vending machine is basically at operational >>> status: >>> >>> https://sudoroom.org/pipermail/sudo-discuss/2016-February/011770.html >>> >>> and as I said in April, I now know how we will perfect the motor >>> homing >>> issue: >>> >>> https://sudoroom.org/pipermail/sudo-discuss/2016-April/011894.html >>> >>> but for now, it works well enough that I was able to dispense one of >>> the >>> candy bars in the machine without cheating and opening up the machine. >>> >>> I didn't even need to power cycle it, the beaglebone in there was just >>> up >>> and working already! >>> >>> thanks to rcsheets who stocked the vending machine with delicious >>> candy >>> bars! products 1030, 1031, and 1032 by the way >>> >>> let me know if you want to help get the vending machine working >>> better. >>> >>> we need simple hardware work, complex hardware work, and software >>> work! >>> >>> -jake >>> _______________________________________________ >>> sudo-discuss mailing list >>> sudo-discuss(a)lists.sudoroom.org >>> https://sudoroom.org/lists/listinfo/sudo-discuss >> >> >> >> >> >> >> -- >> >> -----BEGIN PGP PUBLIC KEY BLOCK----- >> Version: OpenPGP.js v.1.20121007 >> Comment: http://openpgpjs.org >> >> xsBNBFG3btUBB/9+/WJNOSIuc/praKPaPOweqXV5s7PGRD+HAnNWF/19YAY3 >> AFtfeoelhhY4sMJoobTaJzcZojznZ1kl/7UuuYCnbJO3Z9kaSMVrVxEZMSLe >> YmW8Hc4ZsTnl9f05DQFy8ABpAvMLmXJQXh63BbfzjFqNbSWQfLhrubSM2Elq >> xmN6EsmRyAuEeYlSnal+Di2MlViohpCbbagE2D6AZTUECIamTib6+DuLG4XO >> b4GGKHR9TXu2qS1VH6hqcvdEz2MDE5OqZzAnBgcF2dvcOdTk9gAOoR1T+qKj >> IJtg2X0ETbxcPqEXQoXE8VrxN0MLT5JQKTg26+csU4P2w0rEWsUsJombABEB >> AAHNJU1vcmdhbiBBbGxlbiA8bW9yZ2FucmFsbGVuQGdtYWlsLmNvbT7CwFwE >> EAECABAFAlG3btwJEG9pFLKaVEfeAAD7hwf+K8LN/kfgi8GTRLiTcuM+hSbm >> uAeiBY+VaJIQFLzoFlt8A0hBlLNPFNNmUDxdPrMErdHgZ7HtJW/6RANuBTti >> 5hr3EBguH1GQyK7BbUqJGvaEX4UNRej3uyX3ufXDsIB/3NsKaTyyu+SO0+Hv >> Cn2DwmlfSXcPhoarx6Turizn/WwgtTN3tqrMWxxiCKWydLH5xYuz+23BLMdc >> oF/zkbF+7ddFhmyfiFh4Ej9//tsfwPj2cACU3uLTrcwCo7IxUtkrqMF/fhlm >> LEqjhzDDjq9v7GNWb/5xB2xgTaucJ7/ljuS8nPlZqwCI8NlTgSqC8nyVLyjS >> yVtOzkItcS0UqyW1Mg== >> =V/Ia >> -----END PGP PUBLIC KEY BLOCK----- >> >> _______________________________________________ >> sudo-discuss mailing list >> sudo-discuss(a)lists.sudoroom.org >> https://sudoroom.org/lists/listinfo/sudo-discuss >> >

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