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I own an evaluation board, and it uses MIC29302 to get the 4.2v for the SIM900, it works perfectly!
why dont use LDO if the supplier does?
Also, LDO are considerer better that any DC-DC converter when trying to avoid any noise, since DC-DC could deliver some high frecuency noise that in case of...
Thanks!
That's a nice step into understanding this SIM900B module.
I saw a picture few post ago that shows that 1137B04SIM900B64_SAMSUNG wasn't in the repository.
Could someone lend me a newer "_SAMUNG" firmware?
Hello everyone
I have a SIM900B-E module that had a problem with the AT+CMGR command, when reading SMS, that previous SIM340D was doing good, so i decided to flash it with some firmwares i found here, but now it doesn't start, newtork LED is always off.
The flash process application says it was...
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