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4 -> TXD (Data output
data may be sent via the micro USB connector or the UART line
THINGS YOU CAN MAKE WITH THE STEM:BIT
4GHz wireless interfaces (802
Double-clicking the reset button will put you in power-saving mode
SIM808 GPRS/GSM+GPS+BLUETOOTH SHIELD spi case 4 -> TXD (Data outputSIM808 GPRS GSM+GPS Shield is a GSM and GPS two in one function module. It is based on the latest GSM GPS module SIM808 from SIMCOM, supports GSM GPRS Quad Band network and combines GPS technology for satellite navigation. It has high GPS receive sensitivity with 22 tracking and 66 acquisition receiver channels. It has standard 4 pole TRRS headphone jack so that you can use any 'Android' or 'iPhone' compatible headset with a mic. Also breakouts for
