wireless transmitter/receiver 915mhz 900mhz---931mhz long range lora module sx1278 rf-92up
rf-star rf-92up module is a lora spread spectrum module based on the semtech sx1278 chip. wireless serial port transmission module (uart), 3.3v ttl level output. working frequency band 900mhz---931mhz mhz. compared with traditional radio frequency technology, lora spread spectrum technology has the characteristics of concentrated power density, strong anti-interference ability, strong confidentiality and longer transmission distance. it meets battery power requirements and suitable for applications with ultra-low power consumption.
| pin no | name | type | description |
| 1 | gnd | p | ground |
| 2 | dio5 | i/o | configurable universal io port |
| 3 | dio4 | i/o | configurable universal io port |
| 4 | dio3 | i/o | configurable universal io port |
| 5 | dio2 | i/o | configurable universal io port |
| 6 | dio1 | i/o | configurable universal io port |
| 7 | dio0 | i/o | configurable universal io port |
| 8 | res | i | reset pin |
| 9 | gnd | p | ground |
| 10 | gnd | p | ground |
| 11 | vcc | p | power supply, range from 2.5v to 5.2v (5v is recommended, as external ceramic filter capacitor) |
| 12 | sck | i | spi clock input pin |
| 13 | miso | o | spi data output pin |
| 14 | mosi | i | spi data input pin |
| 15 | nss | i | module chip select pin for starting spi communication |
| 16 | txen | i | rf switch pin control; txen is high when transmitting, rxen is low. |
| 17 | rxen | i | rf switch pin control; rxen is high when receiving, txen is low. |
| 18 | gnd | p | ground |
| 19 | rf | o | antenna port |
| 20 | gnd | p | ground |
| 21 | gnd | p | ground |
| 22 | gnd | p | ground |
