[Hackability] battery voltages in mobility scooters
Liz Henry
liz at bookmaniac.org
Sun Sep 23 23:18:21 UTC 2012
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
>
> _ _.._ .---/ '____ '\ / \ ~~_' | .-.---' ** H A C K
> ** o o \ \__/ /`'\~~-.. | |_|___ ** **
> -~ \;__ _}/ ~- \____/ '---\_.----' ** A B I L I T Y **
> _~ O o\_ o-(*)o ~-
>
--
------------------------
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
More information about the Hackability
mailing list