Converting an Old Laptop to Charge via USB-C Power Delivery 

Thanks, I am working on some even cooler stuff stay tuned :)

how was with this adapter ? is it work flawlessly ?

@@FERRYKANA yes, I am using it right now. You just have to be careful to use a USB C power supply that can supply the right voltage and at least as many watts as the original power adapter. Very happy with it.

@koreantelevision ​ it depends of multiple factors. Some laptop brands such as Dell or Lenovo, have some type of communication in the adapter that tell the laptop what is the speed (maximum current) of the charger. Typically when you use a USB C PD adapter like I mentioned, you are losing this communication. Usually the adapters are faking an adapter of a certain maximum current and this is fixed. This is super important point and you need to be very careful to only use a USB C PD power supply that can deliver at least whatever current the adapter advertises to the computer. Say you have a Dell laptop that can only use a 65W adapter, and you use a Dell to USB C PD adapter that advertises itself as a 90W adapter. As long as you use a USB C PD power supply that can provide at least 65W you will be fine. Now if you use the same 90W adapter on a laptop that can actually use the full power of a 90W adapter, you will overload a 65W USB C PD powersupply. And if you use a 90W USB C PD adapter with a 90W USB C PD power supply on a Dell laptop that requires a 130W adapter, then the laptop will see it can only draw 90W, and at best it will work and charge slower, and at worse it will complain or refuse to boot. So you need to be careful to choose the right adapter and right USB C PS power supply, but if you do so, it will not be slower. If you do it incorrectly you will get bad results and may damage something. This is why those adapters should only be used by advanced users who understand what they are doing Hope this helps!

​@@the_bootloaderbut how would that negotiate the voltage since there is no ic or anything?

​@@Justgreen89925 The connector usually has a PD chip that tells the charger what Voltage to use.

I am not quite sure what you mean. Are you going to have an onboard adapter that can passthrough either the barrel connector or the type-c port? As for what the 1-wire, the laptop only scans for the voltage (19.5V) and the wattage (45W). I believe if the wattage is lower it will not charge but it will still power, and if it's greater (90W) it will still work fine. Although I suppose there might only be hardcoded/max wattage value that it would accept. Here is a blog post that goes into a little more in detail: hclxing.wordpress.com/2014/02/09/hacking-a-dell-power-adapter-part-iii/

sure thing, dm me on reddit /u/jakobnator

does that mean yours cannot accept other charger that are not from DELL?

XPS 13 9343 It was the early 2015 model, last one before they added type C charging

yes you wouldn't need to spoof the 1 wire protocol. they make usbc to barrel adapters you could use.

I can’t guarantee anything but it would be fine. If you wanted to double check for sure you could find what charge controller they are using like I do towards the end of the video.

You would almost certainly would not be able to repurpose the old type C circuitry to support pd charging. You would have to lose current USB connectivity on one port. Design something similar to what I did then have it tap into the existing charge circuitry and type c port. If you were really crafty you could then also tap back into the usb interface that you cut out, but that probably would require a different usbc pd integrated circuit. Then you are really in the weeds

That's my notification sound on my phone that I forgot to silence lol

They are a huge pain to build manually but if enough people are interested I would consider it

@@jakobnator5841 Yes please!

oshpark.com/shared_projects/XL2k3mkZ

Will not work

@@jakobnator5841 but if you add to it the ROM of the one wire protocol it could work? (ROM savaged from a 65W charger or programmed like you showed obv)

@@ilnerdchuck that would work, the reason i didnt was the chargers are pretty expensive but if you had a broken one would be worth a shot

@@jakobnator5841 i will program one, maybe others could try with a third party working charger and use it's module if they can't figure out how to program the ROM