This is a board to support a lambda80C 2.4GHz LORA transceiver RF module, adapted to Mikrobus standard pinout specification.
Lambda Module used: Lambda80-24S. The LAMBDA80 is a 2.4GHz LoRa transceiver using the Semtech SX1280 technology, providing ultra-long range, spread spectrum communication and high interference immunity within minimal current. For more information on SX1280.
Some Specification:
- Transmit power +12.5 dBm
- High sensitivity: down to -132 dBm
- RF Data Rate: FSK upto 2.02Mbps - LoRa upto 476bps
Programing of the module is via SPI interface. This module has as pin BUSY, RESET, SPI, 3 DIO (Digital I/O software configured) and a Antenna connection “C” Versions. Antenna is connectable with a connector UFL female.
Here the connection between the Mikrobus standard pin and the Lambda80 module pin
AN <-> DIO1
RST <-> RESET
CS <-> NSEL
SCK <-> SCLK
MISO <-> SDO
MOSI <-> SDI
PWM <-> DIO2
INT <-> BUSY
Lambda80 is supplied with 3.3V, by the +3.3V Mikrobus pin.
The Ebyte E28 module has no PCB antenna, so a external antenna is needed. A UFL male connector is available on the module to plug a external antenna with a UFL female connector.
The project was made on Kikad, which is a free software for electronics circuit board design, developed by IUT of Grenoble.
For the mikrobus lib and footprint, I use the MIKROE-924 model available on component search engine. For the Lambda80, I use the Lambda80 model.
All the schematic and footprint are in the "Lib & Fp" folder. For the Mikrobus and Lambda80 lib, you have to choose the KiCad folder when adding the lib to the project.