Luckfox Lyra (RK3506) upgrade for Standalone Edition

Use of a Luckfox Lyra together with SoftRF Standalone Edition is possible by means of an adapter board.

Specifications

Component	Data
Processor(s)	3 x 32-bit Cortex A7 @ 1.2 GHz 1 x 32-bit Cortex-M0
Memory	128MB DDR3
MIPI Interface	Supports MIPI interface (2-lane, 22-pin) with a maximum output resolution of 1280x800@60fps
USB	2 x USB OTG 2.0
GPIO	24 RM_IO pins
Int. storage	256MB of SPI NAND FLASH
Ext. storage	TF Card
Operating System	Buildroot or Ubuntu 22.04

Bill of materials

Number	Part	Qty	Picture	Source
1	Luckfox Lyra B	1		AliExpress Luckfox Store
2	1x40 female header 2.54mm	1		Local
3	Bosch BMP280 pressure sensor	1		AliExpress

Wiring

Tip

For the purpose of this document it was most time efficient to make the adapter with use of a prototype board.
We will be happy to see a volunteer who will design a PCB for the adapter then share it's Gerber files to public. PCB needs few days to wait (manufacturing) but takes less time and skills to solder.

NodeMCU	Lyra	BMx280 sensor	Function
D0	RMIO 12		RADIO BUSY
D1	RMIO 4		LED ring
D2	RMIO 2		RADIO RESET
D3	RMIO 1		GNSS RxD
D4	RMIO 27	SDA
	RMIO 26	SCL
	3V3(OUT)	VCC
	GND	GND
3V3	3V3(OUT)
GND	GND
D5	RMIO 7		RADIO SCK
D6	RMIO 5		RADIO MISO
D7	RMIO 6		RADIO MOSI
D8	RMIO 13		RADIO SLAVE SELECT
RxD	RMIO 23		UART RxD
TxD	RMIO 22		UART TxD
GND	GND
3V3	3V3(OUT)
SD3	RMIO 8		buzzer
SD2	RMIO 0		GNSS TxD (optional)

Tip

The Luckfox Lyra pinout was chosen to be compatible with:

• WaveShare Pico-LoRa-SX1262-868M sub-1GHz ISM band radio daughter board ;
  
• WaveShare Pico-GPS-L76B GNSS daughter board ;
  
• WaveShare Pico Environment Sensor module.
  

This means that the same SoftRF firmware binary that is targeted for the Luckfox Lyra with the adapter to Standalone Edition may (or may not) be used with the WaveShare products as well.

Assembly

This adapter has a nice fit to the Standalone Edition board.

Software installation procedure

1. Follow these instructions
2. Open up the SoftRF WebUI status page to inspect if everything is doing good