View source for SX1278 HDK


== Features ==
''' Main features '''
* SPI Interface
* central frequency 433mhz, or 470mhz
* referencial distance 10KM
* SX1278 IC, TTL output
* Max power rate 20dbm, can be setup by software
* 1.7-3.8V power supply
''' Specfication '''
* Operating voltage: 1.8 ~ 3.7V
* Receiving current: 10 ~ 14mA
* Tranmission current:
* 120 mA @ + 20 dBm
* 90mA @ + 17dBm
* 29mA @ + 13dBm
* Operating frequency: 433MHz, 475MHz
* Transmit power: +20 dBm
* Receiver sensitivity:
* -139dBm @ LoRaTM & 62.5Khz & SF = 12 & 146bps
* -136 @ LoRaTM & 125Khz & SF = 12 & 293bps
* -118 @ LoRaTM & 125Khz & SF = 6 & 9380bps
* -123@FSK&5Khz&1.2Kbps
* -117@FSK&5Khz&4.8Kbps
* -110@FSK&20Khz&38.4Kbps
* Frequency error: +/- 10ppm
* FIFO space: 64 bytes
* Data rate:
* 1.2K~300Kbps@FSK
* 0.018K ~ 37.5Kbps @ LoRaTM
* Modulation: FSK, GFSK, MSK, GMSK, LoRaTM, OOK
* Interface type: SPI
* Sleep Current: 0.2uA@SLEEP, 1.5uA @ IDLE
* Operating temperature: -40 ℃ ~ +85 ℃
* Digital RSSI function
* Automatic frequency correction
* Automatic Gain Control
* RF wake-up function
* Low voltage detection and temperature sensors
* Fast wake-up and frequency hopping
* Highly configurable packet handlers
* Antenna diversity and TX / RX switch control
== Pin definition, size ==
[[File:Sx1278 pins.jpg|thumbnail]]
* 1 GND - Negative power ground
* 2 SO I SPI interface MISO data output
* 3 SI O SPI interface MOSI data input
* 4 SCK I SPI interface SCLK clock input
* 5 NSS I SPI Interface NSS Select input
* 6 RESET I Reset pin
* 7 DIO5 I / O direct connect chip DIO5 digital I / O pin, software setting
* 8 GND - Negative power ground
* 9 RF I / O RF signal input / output, connected to 50Ω antenna
* 10 GND - Negative power ground
* 11 DIO3 I / O direct connect chip DIO3 digital I / O pin, software setting
* 12 DIO4 I / O direct connect chip DIO4 digital I / O pin, software setting
* 13 VCC - positive power supply 1.8 ~ 3.7V
* 14 DIO0 I / O direct connect chip DIO0 digital I / O pin, software setting
* 15 DIO1 I / O direct connect chip DIO1 digital I / O pin, software setting
* 16 DIO2 I / O Direct Connect DIO2 Digital I / O pin, software setting



== LORA Modules ==
=== EE1 Lora Module 100mW ===
<gallery>
File:Sx1278_pins.jpg | Pin definition
2018-03-16 121234.png | Dimension 
</gallery>
==== Pin Definition ====
* GND - negative ground
* SDO 0 SPI Interface MISO Data Output
* SDI I SPI Interface MOSI Data Input
* SCK I SPI Interface SCLK Clock Input
* SEL I SPI Interface NSS Select Input
* RST I/O reset pin
* IO5 I/O Direct Chip DIO5 Digital I/O Pin, Software Set
* GND - negative ground
* ANT I/O RF Signal Input/Output with 50Ω Antenna
* GND - negative ground
* IO3 I/O Direct Connect Chip DIO3 Digital I/O Pin, Software Setup
* IO4 I/O Direct Connect Chip DIO4 Digital I/O Pin, Software Setup
* VCC - Positive Power Supply 1.8 to 3.7V
* IO0 I/O directly connected to the chip DIO0 digital I/O pin, software setting
* IO1 I/O Direct connection to chip DIO1 digital I/O pin, software setting
* IO2 I/O Direct Connect Chip DIO2 Digital I/O Pin, Software Setup
==== Specification ====
* Interface form: SPI
* Sleep current: 0.2uA@SLEEP, 1.5uA@IDLE
* Working temperature: -40°C～+85°C
* Digital RSSI function
* Automatic frequency correction
* Automatic gain control
* RF wake up function
* Low voltage detection and temperature sensor
* Fast wake-up and frequency hopping
* Highly configurable packet handler
* Antenna diversity and TX/RX switch control
* Size: 16*16*2.7mm, including plate thickness 1mm
* Operating voltage: 1.8 to 3.7V
* Receiving current: 10~14mA
* Send current: 120mA@+20dBm, 90mA@+17dBm, 29mA@+13dBm
* Operating frequency: 433MHz, 470MHz
* Transmission power: +20dBm
* Receiving sensitivity:
 -139dBm@ LoRa TM &62.5Khz&SF=12&146bps
 -136@LoRa TM &125Khz&SF=12&293bps
 -118@LoRa TM &125Khz&SF=6&9380bps
 -123@FSK&5Khz&1.2Kbps
 -117@FSK&5Khz&4.8Kbps
 -110@FSK&20Khz&38.4Kbps
* Frequency error: +/-10ppm
* FIFO space: 64Byte
* Data rate:
 1.2K to 300Kbps@FSK
 0.018K～37.5Kbps@ LoRa TM
 Modulation: FSK, GFSK, MSK, GMSK, LoRaTM, OOK

=== EE2 Lora Module 1W ===

{| class="wikitable sortable"
|-
! Version !! 433 !! 868 !! 915 !! 170
|-
| Frequency || 410~441mhz || 862~893mhz || 900~931mhz || 160~173.5mhz
|-
| Feature || ISM - Asia || EU || America || High peneration 
|-
| Chip || SX1278 || SX1276 || SX1276 || SX1278 
|-
| Power || 30dBm (1W) || 30dBm (1W) || 30dBm (1W) || 30dBm (1W) 
|-
| Distance || 8Km || 8Km || 8Km || 8Km 
|-
| Communication || UART || UART || UART || UART 
|-
| Footprint and Size || 43*24 mm DIP || 43*24 mm DIP || 43*24 mm DIP || 43*24 mm DIP 
|-
| Current || 610 mA || 680 mA || 700 mA || 680 mA
|-
| Voltage || 3.3-5.2VDC || 3.3-5.2VDC || 3.3-5.2VDC || 3.3-5.2VDC
|-
| Baud rate || 1200-115200 || 1200-115200 || 1200-115200 || 1200-115200 
|-
| On Air speed || 0.3-19.2kbps || 0.3-19.2kbps || 0.3-19.2kbps || 0.3-19.2kbps 
|-
| Transmission length || 512 bytes || 512 bytes || 512 bytes || 512 bytes 
|-
| Sensitivity || -147dbm@0.3kbps || -147dbm@0.3kbps || -147dbm@0.3kbps || -147dbm@0.3kbps 
|}

==== Working Mode ====
* M0/M1 - 0/0 - normal mode
* M0/M1 - 1/0 - wake up on air from transitter mode, auto add wake code
* M0/M1 - 0/1 - wake up on air from receiver mode, can not send in this mode
* M0/M1 - 1/1 - sleep mode, also enter into config mode



== Reference Schematic ==
<gallery>
File:ESP_Lora_SCH_01.png | ESP Lora schematic 
File:Sx1278 application schematic.jpg | application - Use with atmega48 IC
</gallery>



[[category: SX1278]]