04-05-2020, 03:10 PM | #1 |
Freude am Fahren.
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Bored? Here's a Wireless Charger DYI for You
Hey guys,
I was looking for a way to charge my phone wirelessly in a car for some time now, but all available solutions just do not work for me: 1. OEM: charging pocket and charging snap-in do not work for me simply because they are located in the armrest box - I will forget my phone in the car 100 times out of 100; 2. BMW charging station: it's just a bad design that takes away a 12v socket and a cupholder; 3. Charging pad available from Aliexpress, for example here: https://www.aliexpress.com/item/32992569538.htm - same as BMW charging sation - takes away cupholder and 12v outlet (though it gives you back an extra USB-port) So if you cannot buy it - build it yourself - especially since we all have some time to spare. I've decided to use a small pocket next to a 12v socket - it fits my iPhone X perfectly. As my car came with the smoker's package (but I do not smoke), I decided to utilize an ashtray as a housing. After some experimenting and a bunch of different parts from Aliexpress, I ended up using these components: 1. Fast charging wireless pad: https://www.aliexpress.com/item/4000263350537.html After experimenting with some Qi PCBs I've ordered, I ended up using the parts sourced from this pad, as it got all the components in a tiny module that was easy to hide inside the ashtray. As well it supports fast charging. On the minus side - initially, I was planning to go with a tri-coil design, but it was harder to fit in an ashtray. 2. 12v to 9v module - you have to supply 9v to make fast charging work. https://www.aliexpress.com/item/32861098806.html It got operating temperature from -40 to +85 and is waterproof. I've used plastic mash from a dollar store to mount the charging coil and decided to cover everything with a anti slip mat - it looks decent, easy to cut and will hold the phone in place. Anti-slip mat: https://www.amazon.ca/gp/product/B01EIY01IE/ While putting electronic components together was quite simple, putting everything together required some experimenting: After my charger was ready, I've removed the cupholder assembly and connected it to the 12v socket wires. You can follow TIS (https://www.newtis.info/tisv2/a/en/f...les/1VnXgP85Hp) or r33_RGSport's manual for kneepads retrofit. And here's the finished product:
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04-05-2020, 04:47 PM | #2 | |
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Genius! I like it your prototype. So many questions, is it plug n play? Is it removable? How much? When do you start production? I want one. Sadly, my iPhone 11 Pro is the largest phone that will fit in the oem wireless cradle atm.
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04-05-2020, 05:34 PM | #3 | |
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It's not plug-n-play - I had to solder it to the 12v outlet wires, but it can be done that way, I just didn't have a connector I could use at home and I didn't want to postpone this project any longer. Maybe, someday, I will attempt a tri-coil setup and a connector, but I doubt it.
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04-05-2020, 11:18 PM | #4 | ||
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04-05-2020, 11:23 PM | #5 | |
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04-05-2020, 11:26 PM | #6 | ||
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04-06-2020, 10:39 AM | #7 |
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From the view of your pad, more specifically, the hollow in the middle that I see, a phone is too far above the coil. Get rid of the hollow, make the pad flatter, and it should work better.
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