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Hello guys,
I'm am looking for a transformer like the ones used in 1$ fake iPhone Chargers. I dissembled one an attached a photo of it to make it more clear.
I was wondering why I can't find such an transformer on sites like dealExtreme and aliexpress for under 1$ but the charger for 0.70$. In...
Hello, I have designed a PCB with a sim900 but no matter what I do it is not recognising my sim card. When it boots it says: "+CPIN: NOT INSERTED"
I attached a picture of the schematic, a scope where blue is the status LED and pink the simVDD and a picture of the solderd sim socket because I'm...
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