PD charger power a tablet and an ESP_5V? | Home Assistant | Page 1

rich forum Jan 10, 2026, 4:47 PM

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Hi, can anyone give me an idea of how to make a PD charger power a tablet and an ESP_5V?

It only transmits 9V and I can't disable the tablet because otherwise I won't even be able to do that.

hushed vigil Jan 10, 2026, 4:49 PM

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You can only output 1 voltage from 1 usb port

rich forum Jan 10, 2026, 4:50 PM

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I need to mount the tablet on the wall and have power to control the ESP32; I don't have room for two power adapters.

hushed vigil Jan 10, 2026, 4:50 PM

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You can use a step down converter but it will get 5V first, then 9V after the tablet negotiates it. Will also mess with the current so the charger may just drop out

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Get an adapter with 2 ports. There are small ones

rich forum Jan 10, 2026, 4:51 PM

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I've already searched on AliExpress but haven't found any; that would be ideal.

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I also thought about stepdown mode, but that wouldn't provide power if the tablet wasn't turned on.

hushed vigil Jan 10, 2026, 4:53 PM

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There are tons of 2 port adapters https://a.aliexpress.com/_ExTH57S

rich forum Jan 10, 2026, 4:54 PM

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https://pt.aliexpress.com/item/1005006781123774.html?spm=a2g0o.order_list.order_list_main.4.7b7fcaa4fFFQV9&gatewayAdapt=glo2bra

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I was looking for something more like this.

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This is the one I have built and it's great, but I'm going to end up burning the ESP.

hushed vigil Jan 10, 2026, 4:56 PM

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I usually just break open a normal charger but you can also use this. I have 1 and it may be small enough https://a.aliexpress.com/_EuxPslE

rich forum Jan 10, 2026, 4:57 PM

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okok that tastes good, I'll measure it

#PD charger power a tablet and an ESP_5V?