[Hackability] battery voltages in mobility scooters
Ian Smith
ismith at metaforgotten.org
Mon Sep 24 02:25:12 UTC 2012
I also plan to be there for the RPi stuff, but either day works for me.
On Sep 23, 2012 4:18 PM, "Liz Henry" <liz at bookmaniac.org> wrote:
> OK! That sounds good! Scooter hack day at Noisebridge. Saturday the
> 29th is Raspberry Pi demo day 11am- 5pm which might be kind of big and I
> also am interested in going to it. Do you all want to meet during that
> time, or maybe move to Sunday when there won't be a ton of people around
> NB? Early afternoon is good for me either day.
>
> - Liz
>
>
> On 9/22/12 12:45 PM, Zach wrote:
> > Hey John, Here's the file then, it's a small one so hopefully it will
> > go out on our list. It's a great little chip that does a 10 LED
> > display and someone posted this in an online forum as a way to expand
> > it to take 24v+ I haven't built it yet but it is pretty simple
> > enough and I bet it works great.
> >
> > Would be interested in hearing about the scooter, though if I can get
> > the motor replaced on the folding one I think I will be very content
> > with what I have :) Would still love to come to the shop sometime
> > soon, have you been able to make a key? I was really sick for a few
> > weeks so I've been out of touch. Any ideas what days you're around
> > the coming week?
> >
> > Also-- to the group--- LETS MAKE A SCOOTER HACK DAY :D I know weve
> > been talking and talking but lets just make this thing happen! How
> > about Thursday or Friday this coming week, 27th and 28th? Or that
> > weekend? I'm available then and can bring lots of cool stuff to show
> > if we meet at Noisebridge. Just post back if you're interested and
> > have a preferred day :)
> >
> > Zach
> >
> > --- On Sat, 9/15/12, john benson <followthatparade at yahoo.com> wrote:
> >
> > From: john benson <followthatparade at yahoo.com> Subject: Re:
> > [Hackability] battery voltages in mobility scooters To:
> > "heinousbutch at gmail.com" <heinousbutch at gmail.com>,
> > "organic_unity at yahoo.com" <organic_unity at yahoo.com> Cc:
> > "hackability at lists.noisebridge.net"
> > <hackability at lists.noisebridge.net> Date: Saturday, September 15,
> > 2012, 10:26 PM
> >
> >
> >
> > Hey Zack- any schematics for a 24 volt for meter or for that matter
> > any add ons you may know of could be very helpful
> >
> > I just acquired another scooter you may be interested in Sent from
> > Yahoo! Mail on Android
> >
> > From: Zach ;
> >
> > To: Susan Werner ;
> >
> > Cc: hackability at lists.noisebridge.net ;
> >
> > Subject: Re: [Hackability] battery voltages in mobility scooters
> >
> > Sent: Mon, Sep 3, 2012 12:16:24 AM Thanks Susan, this could be very
> > useful!
> >
> > One of the hangups I'm finding with the BQ2013H is sourcing the 0.005
> > ohm 10W resistor. I can only find suitable ones on Digikey for $3
> > each + ship... itll be something like $10 just for that part.
> >
> > Also, the max battery capacity is measured at 15Ah, which means it
> > will work for Liz's scooter but not my main one. Liz, would you want
> > the circuit after I'm done building it? It makes the most sense for
> > you to use it :)
> >
> > Other than that, it's very very badass. I also did another scooter
> > hack last night at NB, and a very useful one I think. My
> > forward/reverse pot comes loose over time with its shitty set screw,
> > resulting in me moving slowly backwards when I put the key in. The
> > only way to fix it is to disassemble the whole thing and reset the
> > screw...which is a serious pain in the arse to do every so often.
> > The fix? Wire in a parallel externally adjustable 50k trimmer pot.
> > It was Jake's idea, and it works great :) Also got a schem for using
> > the LM3914 with a 24v lead acid battery I can upload here if people
> > want a simple 10-LED volt gauge for the chairs. Its pretty nice.
> > Zach
> >
> >
> >
> > ----- Original Message -----
> >
> > From: Susan Werner
> >
> > To: Zach
> >
> > Cc: hackability at lists.noisebridge.net
> >
> > Sent: Wednesday, August 29, 2012 1:56 PM
> >
> > Subject: Re: [Hackability] battery voltages in mobility scooters
> > Oooh, thanks. That's useful information. Can you give me contact
> > information
> >
> > for John? I'd just like to ask before I commit to a certain design.
> > This might be of interest -- it's a fully analog (so no
> > microcontroller needed!)
> >
> > power and current monitor that's very easy to use:
> >
> > http://www.linear.com/product/LT2940
> >
> >
> >
> > _______________________________________________ Hackability mailing
> > list Hackability at lists.noisebridge.net
> > https://www.noisebridge.net/mailman/listinfo/hackability
> >
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>
>
> --
>
> ------------------------
> Liz Henry
> liz at bookmaniac.org
> http://bookmaniac.org
>
> "Without models, it's hard to work; without a context, difficult to
> evaluate; without peers, nearly impossible to speak." -- Joanna Russ
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> Hackability at lists.noisebridge.net
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>
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