Turtle Board






  • Include antenna;
  • Include pin map sticker;
  • Not include battery;
  • 1/2 AA Lithium chlorine sulfite battery (Sale Mainland China only, can’t air transport)
  • Antenna

Availability: 2955 In Stock



In order to meet the user’s requirements for Ultra-Low-Power and standard LoRaWAN protocol, we designed this product. On the basis of STM32L151CBU6MCU and SX1278 LoRa chip(433、470MHz), the low power current can reach to 6uA.


  • CE Certificate;
  • Microprocessor: STM32L432KC (32-bit ultra-low power MCU) with LoRa node chip SX1276;
  • Micro USB interface with complete protection measures such as voltage regulation, ESD protection, and short circuit protection;
  • Onboard AAA x 2 battery holder, USB / battery power automatically switch;
  • Reserve IPEX and SMA antenna interfaces for LoRa use;
  • Programming and debugging interface can be combined with our downloader
  • Support DFU protocol, which can be downloaded conveniently via USB (combined with “RadioShuttle STM32 Utility”)
  • Professional software support (ARM Mbed IDE);
  • Provide Standard LoRaWAN protocol routines;
  • Good RF circuit design and perfect low-power design (sleep current: 4uA), which is convenient for IoT application vendors to quickly verify solutions and deploy applications;

Technical parameters:

Resource Parameter
Master Chip STM32L432KC(Ultra-low-power 32-bit MCU+FPU ARM® Cortex®-M4)
Wireless Communication LoRa
Node-to-node communication or LoRaWAN
LoRa Chip SX1276
LoRaWAN Area hardware version Support frequency
LF EU433
HF IN865
LoRa Maximum Output Power 19dB ± 1dB
Hardware Resource UART x 3; SPI x 2; I2C x 2; SAI x 1; 12-bits ADC input x 14; 12-bits DAC output x 2; GPIO x 18
FLASH 256KB internal FLASH
RAM 64KB internal SRAM
Interface Micro USB x 1; LoRa Antenna interface(SMA) x 1; 14 x 2.54 pin x 2+4 x 2.54 pin x 2(Debug interface)
Maximum Size (Including protruding parts
such as switch and battery compartment)
73.5 x 31.5 x 24 mm
USB to Serial Chip x
Battery AAA Lithium x 2
Solar Energy x
Battery Detection Circuit
External Device Power Control(Vext)
Low Power Deep Sleep 4μA
Display Size No display
Working Temperature -40~80℃
Electrical Features Condition  Minimum Typica  Maximum
Power Supply USB powered(≥500mA) 4.7V 5V 6V
Lithium powered(≥250mA) 1.8V 3V 3V
3.3V(pin)powered(≥150mA) 2.7V 3.3V 3.5V
5V(pin)powered(≥500mA) 4.7V 5V 6V
Power Consumption(mA) LoRa 10dB output 50mA
LoRa 12dB output 60mA
LoRa 15dB output 110mA
LoRa 20dB output 130mA
Output  3.3V pin output 500mA
5V pin output (USB powered only) Equal to the input current
External device power control (Vext 3.3V) 350mA


Test Info

                                                                                                        LoRa 915MHz  RF power output
                                                                                            LoRa 433MHz  RF power output
                                                                                        LoRa 868MHz  RF power output








LoRa Band

433MHz, 470-510MHz, 863-987MHz, 902-928MHz

working temperature

-40°C to 80°C


73.5 x 31.5 x 24 mm


Micro USB x 1|SPI|LoRaAntenna interface


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