LEDs for Wheelchair - Need help

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Here is the video :

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Wow. LEDs…!

Next, we need a set of individually addressable RGB LEDa and an accelerometer so a color pattern stays static and the chair moves and turns through it…

(tip: put a youtube link on a new line and it will embed itself instead of being a link)

Ok, I found some fairly off the shelf components, I just need the strips cut, attached etc. Hopefully find help on a Thursday Evening sometime :slight_smile:

Lights: https://www.amazon.co.uk/gp/product/B01FLJONKM/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Corner connectors : https://www.amazon.co.uk/gp/product/B016JMWZ3C/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Battery : https://www.amazon.co.uk/gp/product/B01422TC14/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Accessories : https://www.amazon.co.uk/gp/product/B002SIDKNG/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Any idea how long a charge I can expect with this set up with all four stips?

If you know how many LEDs you have in total and what power they use you can easily calculate how long your battery will last.

I couldn’t see those kind of specs on the LED’s you found though, so difficult to say. If you can find equivalent LEDs with the info you need you can figure it out. @electrotechs will point you at the right equations :slight_smile:

You can measure the current draw of the LEDs with a multimeter to get an idea. If your connection between the LEDs and battery is by USB, you can use an in-line USB power meter to do the same. Something like this:

http://www.ebay.co.uk/itm/USB-Charger-Battery-Doctor-Mobile-Power-Detector-Tester-Voltage-Current-Meter-/231817507267?var=&hash=item35f96671c3:m:mQZk1eztr96TOcrEy468B0w

http://www.ebay.co.uk/itm/USB-Charger-Doctor-Mobile-Battery-Tester-Power-Detector-Voltage-Current-Meter-DE-/262590547779?hash=item3d239dc743:g:cckAAOSwHoFXvEXO

£1 from China, or £3 from a British supplier. I have one, but am not able to come in on Thursday evenings. I could leave it at the Makerspace next time I come down if you would like to use it.

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Hi Richard, as far as I remember from my droning days, the battery has a current rating (20000mAh in your case, “twenty thousand milliamperes hour” in plain english) and the LED strips also have a current rating in Amperes so if the current rating of the LED strip is 6A that means that your battery pack can keep it going for 20Ah/6A (20000mAh = 20Ah). The Amperes units cancelled themselves out and you are left with about 3 hours and some of continuous use, double that if the LEDS are blinking half on half off and more if they are more off than on.

Also, about Thursday, technically you are not a member but I think the statute accounts for guests so for clarity’s sake, I’ll have you in the space as my guest, I think that is legit and above board.

Speak soon

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Howdy, will anyone be around if I swing by this Thursday with all my LED arrays?
I could really use the help cutting, attaching and generally sorting them out.

The normal crew will be there Thursday, I’m sure someone will be able to help. @dsikar, are you in Thursday?

Courty

I plan to be in and can help. @LEDmyWheelchair we now have a very informal addressable LED strip study group going , currently working on Knight Rider type scanners and would be able to put it on your wheelchair if you wish, provided your strip can be driven by an arduino.

Current strips are not individually addressable but I am willing to buy more advanced ones along with arduino bits if somebody is interested in taking on the project and moving it forward. Probably worth taking some measurements this evening just so there is a clear idea of the spec.

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Let’s do it! :slight_smile:

For what it’s worth: https://discourse.southlondonmakerspace.org/t/led-umbrella-code-help/

Hey Daniel,

Richard has arrived do you have an ETA?

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Blimey. Shortly after everyone left @Edd turned up with an Onion Omega 2 complete with dock and 8x8 square LED matrix. Plus shift registers to boot. He’s pimping his bike so @LEDmyWheelchair you might want to track this development.

Meanwhile, iteration number 2

Tail lights detail

@rosszeibari testing

Installation

9 Likes

That is wicked, I love it!

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@kimmik you might remember it was your Sam who made a start on the shopping list!

Brilliant! I’ll be checking this out regularly. I’m about to get the tools for compiling code for the ESP8266 in Windows. It’ll be interesting to see how it compares to the Onion.

Hi Everybody! Been a while!

Not sure if I should make a separate thread for this? but I want to add a camera and recording rig to my wheelchair. I was looking at these 360 recording VR cameras but something better quality would be good too. was thinking go pro but I want audio too and I want to be able to turn it on and off with a click of a button in a handy place I can reach. The camera can be mounted above my head on the chair, where the headrest would usually go. I want to be able to make videos from the literal perspective of somebody in a wheelchair. No live streaming needed just a way to store for later use.

Separate thread for this maybe?