Tim Tailor DIY electrical project - powering devices via USB

[charliefirpo]

Hi,

I want to do some Tim Tailor work and build a charger cable to charge my various devices on the road while touring.

I am no Al Borland. I'm good at DIY but I don't have much electrical /background knowledge. So I can do it practically but I need a little help with the theory.

This is the plan:

https://i.imgur.com/NiwRymN.jpg

What do I need to worry about?

- I get 12V from the socket on my BMW F650GS.
- From there I want to go with a DIN Power Plug with two cables.
- One going to an ordinary female USB (for my phone/GPS on the handlebar) and one goes into my tank bag.
- The one that goes to the tank bag separates in the Tank bag into two ordinary cigarette lighter sockets
- One will get a tripple USB adapter plugged in and the other one will remain free for possible other devices

I know I will have to worry about the Voltage since I am getting 12V from the bike but USB needs 5 so I'll have to reduce the voltage before the female single USB. (Which element do I need for that?) The other three USBs should be fine since it's a dedicated adapter.

What you guys think?
Good idea? Go back to the drawing board? Gtfo? You stupid wanka?

I'm happy about any suggestions.

[WD Forte]

lots of weather proof usb things on Ebay
____________________
bikers smell of wee

[Rogerborg]

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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Val]

You will need one £5 4 USB Car Charger Power Supply DC 12V to 5V 5A Step-down Power Module For MP3 Phone GPS:

https://www.amazon.co.uk/Charger-Power-Supply-Step-down-Module/dp/B00L2A1W6S

Read your manual, but I think your BMW power socket is max 5A that means do not be too ambitous with the number of the devices you plug there the max power is 5A X 12V = 60W.

Means forget about these cigarette lighter adapters if you plan to plug some heated clothing there
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[cheeseman]