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Yeah the "use your phone to charge your headphones" type Qi charging is what you want to use here. Top up your sign and do an nfc tap to set it. Or if it's out
by vorpalhex 3y ago
Yeah the "use your phone to charge your headphones" type Qi charging is what you want to use here. Top up your sign and do an nfc tap to set it.
Or if it's outdoors, add a small solar panel.
- rtkwe 3y agoCan the Qi process bootstrap if the receiving device has no power to begin with? My limited understanding of the process is that there's a communication step between the sending device (a phone in this case) and the recipient before the source begins transmitting. edit: A quick skim of the massive Qi specs makes it seem like maybe it can boot strap but I'll be honest I don't have the time to really dig in super deep into it. Bing Chat also seems to think it can but its sourcing is a bit spotty and the link it provided for that isn't actually saying anything about unpowered bootstrapping on the Power Receiver side.