[Noisebridge-discuss] vending machine fail

Nicholas Iannone knyck2 at me.com
Mon Jan 17 18:59:12 UTC 2011

Sounds pretty hardcore, let me give the seller dude a call and see what he says. Maybe he'll replace it for us?


On Jan 17, 2011, at 10:42 AM, Dr. Jesus wrote:

> It ate a dollar from me, too.
> This machine is lacking an important feature called positive vend
> detection.  Machines with this feature have a photosensor which
> detects when product is vended, and if the photosensor doesn't trip
> after a vend attempt it will retry the vend.  Without this feature the
> machine will be less reliable.
> Replacing the controller logic and adding a vend detector isn't that
> complicated, but it takes a while to prototype and test a new
> controller.  If someone has time to spend on testing and installation
> I can do the EE design work and donate a suitable PLC with relay
> drivers.  I think this is the only way the vending machine will be
> able to take more than $1 in bills per product, too.
> On Mon, Jan 17, 2011 at 10:04 AM, Nicholas Iannone <knyck2 at me.com> wrote:
>> Not sure about the bill feeder but the sprite was loaded incorrectly, so it
>> wasn't tripping the circuit, the machine works best with a nicely stocked
>> column of soda. I have a feeling the diet coke may be loaded improperly as
>> well, I'll take a look today, turns out loading that stuff is not as easy as
>> it seems.
>> Thanks for pointing this out.
>> On Jan 17, 2011, at 8:34 AM, Josh Myer wrote:
>> On Mon, Jan 17, 2011 at 7:54 AM, John E <neurofog at gmail.com> wrote:
>>> Hi Everyone,
>>> I did some testing and it is reliably dispensing coke, but there may be a
>>> weird glitch with the other drinks (sprite & diet coke)
>> The other gotcha we noticed was that it, at least that one time, chewed up a
>> bill it decided not to accept, tearing the end of it when you pulled the
>> bill back out.
>> Also, there were cans in the Sprite hopper, but the "OUT" light was lit on
>> the Sprite button.
>> It seems like we need to get the guy who sold it to us to come look at it
>> under the very short warranty we have.  After that, we'll have to do some of
>> our own kludgery to make this thing work, but, until then, it's nice to have
>> it Just Work.
>> --
>> /jbm
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