i am having a gsm sim 900 module with rs232 and i want to connect it with uart of my arduino leonardo...can i directly connect it with some single hook wires r wat should i do?
doesn't the module come with a datasheet or User Manual ?
i am having a gsm sim 900 module with rs232 and i want to connect it with uart of my arduino leonardo...can i directly connect it with some single hook wires r wat should i do?
Since it is a pure RS232 you cant connect it directly, you must insert a RS232/TTL converter in the middle between the modem and the Leonardo UART pins.
However some Sim900 provide you direct TTL pins on the board, if so then you can connect it directly