radino32 SX1272

Hardware

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The In-Circuit radino32 SX1272 combines an STM32L151 with the SX1272 RF Transceiver in a small form-factor EMC-compliant module. The core of the radino32 SX1272 is the powerful STM32L151 by STMicroelectronics, which with 32-bit ARM® Cortex®-M3 CPU, 32 kbyte RAM, 256 kbyte Flash and 8 kbyte EPROM provides enough resources for complex functionalities.
The radino32 SX1272 is part of the radino-series, which supplies compact wireless modules. All radino Modules are pin-to-pin compatible.
http://youtu.be/-T4tdIQMn6c

radino32 SX1272

Features:

• RF Transceiver Sx1272 connected internally (Datasheet Semtech SX1272)
• Wide range of possible protocols
• Available for 868/915MHz
• STM32L151CC by STMicroelectronics with 32-bit ARM® Cortex®-M3 CPU
• 256 kbyte Flash, 32 kbyte RAM, 8 kbyte EEPROM
• Low Power RTC
• 12 bit ADC and DAC
• Capacitive touch sensing supported
• 23 multifunctional GPIOS (14 PWM, 10 ADC IN, 1 DAC OUT)
• USB, I²C, SPI, 2xUSART

Suitable application development boards

Compatible ADB	ADB Image	Form Factor / Features	Status
radino32 Spider RP-SMA		Breadboard adapter for all radino32 modules with RP-SMA Antenna Connector.	Active
radino32 UART-Bridge		UART bridge with power supply and level shifters for all radino32 modules.	Obsolete
XBee-PRO Shield		XBee Pro adapter for all radino32 modules.	Obsolete
radino32 DinRail Adapter		DinRail Adapter connects the radino32 to RS485.	Obsolete

Software

The modules ship unprogrammed — with no application in memory. What runs on them is written by the customer.

Your own programs go in as a .bin file using stm32flash over the serial interface — see radino32 software. The examples and drivers are there as well.

Note for Windows: Windows fits the bootloader with the wrong driver. Setting the right one is described under radino32 software too.

Range test

For some range tests we used two radino32 SX1272 on radino Spider RP-SMA and a 15 cm antenna with 868 MHz.

Long range test

29.5 km transmission with the radino32 SX1272 from Dresden „Rockauer Höhe“ to Altenberg „Geisingberg“ with long range settings.

Settings:

• Bandwidth: 125 kHz

• Spreading Factor: 12

• Coding Rate: 4/8

• Payload Length: 9 Byte

• Preamble: 8 Symbols

• CRC: on

• Frequency: 868 MHz

• Transmit Power: 20 dBm

• Transmitter: N51.02635°, E13.86242°

• Receiver: N50.76824°, E13.76482°

High speed test

4.9 km transmission with the radino32 SX1272 with high speed settings over some fields.

Settings:

• Bandwidth: 500 kHz

• Spreading Factor: 7

• Coding Rate: 4/5

• Payload Length: 9 Byte

• Preamble: 8 Symbols

• CRC: on

• Frequency: 868 MHz

• Transmit Power: 20 dBm

• Transmitter: N51.14364°, E13.72985°

• Receiver: N51.18722°, E13.7179°

Pinout

Pinout

Downloads

Datasheet radino32 SX1272
EU conformity radino32 SX1272
Eagle library for radino/radino32
Bootloader driver for radino32
LMIC TTN node example