[osmocom] Fucking battery

Peter Stuge peter at stuge.se
Tue May 14 14:22:07 UTC 2013


choukoumoun wrote:
>>> anyone has a solution for connecting to power directly to the
>>> battery connector by usb?
>>>
>>> I thought used a 3.7V zener diodes in parallel between the - and +
>>> USB power and a series resistor.
>>
>> I've used LP3874. You'll need a fair bit of capacitance in order to 
>> transmit.
>
> Nice !!!!
> How you connect?

I designed a PCB with a battery contact and a case to hold it in
place. I've seen several people solder connections permanently to
the phone.


> it was just the power connect to a USB port and trasmition and
> another connection.

I don't understand this.


//Peter




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