SIM900 mini board serial

[zip]

Hi all,

got board off ebay, SIM900 mini.
Is there someone who got it to work with usb to serial but without onboard max232 and also with some uC?

**broken link removed**

 

[FvM]

Without MAX232 IC it is not possible to make USB to serial converter work

Not quite right. There are USB-to-serial adapters with logic level interface.

 

[zip]

I have one, but don't get pin layout to interface to them.