Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
$75.99
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module

Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module

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$75.99

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Product Description

Heltec LoRa Node Products Difference Table:

“Heltec LoRa” product family already included follow options:
 
LoRa spread spectrum communication (node);
Battery powered;
Good RF circuit design and impedance matching.

Product Type① MCU FLASH Battery Battery Detect Vext③ Low Power④ Display
WiFi LoRa 32 Dev-Board ESP32 4MB Lithium② x x x OLED (128×64)
Dev-Board ESP32 8MB Lithium② 800uA OLED (128×64)
Dev-Board ESP32 8MB Lithium② 800uA OLED (64×32)
Dev-Board ESP32-PICO 4MB Lithium② 35uA x
Module ESP32-PICO 4MB x 10uA x
Dev-Board STM32L151CBU6 128kB Lithium x x 7uA x
Dev-Board STM32L151CCU6 256kB 1/2 AA Lithium chlorine sulfite battery 1.8uA x
Turtle Board
(This item)
Dev-Board STM32L432KC 256kB AAA x 2 5uA x

Notes:
 
① – Type:
Dev-Board – Can be used directly;
Module – Only core function, need to cooperate with external PCB or circuit.
② – Lithium: All lithium battery socket for Heltec boards is SH1.25-2;
③ – Vext: 3.3V(500mA) output, for external devices (e.g. sensors) power supply, in deep sleep mode, Vext can be shut down via software;
④ – Low Power: Products’ low power design, of Whole Circuit, the measured data are the current of the system during deep sleep.

Introduction:

The turnkey Turtle board solution can be used immediately. Support standard LoRaWAN protocol and RadioShuttle protocol. The included RadioShuttle radio protocol software enables node-to-node communication without additional routers and servers. The Turtle LoRa board by HelTec Automation can run 10 years on AAA batteries (standard or rechargeable NiMH) using the “RadioShuttle” LoRa wireless low-energy protocol software.
 
About RadioShuttle protocol:
 
RadioShuttle Protocol is a node-to-node LoRa wireless communication protocol software. Compare with LoRaWAN(TM), which is capable of efficiently sending messages in a fast and secure way, any node can work as a gateway. We also provide the MQTT server and IOS / Android APP examples source code.

LoRaWANTM RadioShuttle
Concentrator required No concentrator required, the station uses regular LoRa module
Network subscription fees (If use MQTT server) No monthly fees
One large radio cell Many small independent radio cells
Busy network in a radius of many kilometers Small networks with no interference
Single point of failure (Concentrator) Automatic transmitting power adjustment – longer battery life
High latency, larger spreading factor, e.g. SF11 (1320 ms) Low latency, small spreading factor, e.g. SF7 (120 ms)
Feature:

-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;

Source Parameter
MCU STM32L432KC(Ultra-low-power 32-bit MCU+FPU ARM® Cortex®-M4)
LoRa chip SX1276
LoRa bands EU_433, CN_470_510, EU_863_870, US_902_928 four bands optional
LoRa maximum output power 18dB ± 2dB
Hardware Resource USART x 3; SPI x 2; I2C x 2; SAI x 1; USB 2.0 x 1
12 – bits ADC x 1; 12 – bits DAC x 2
DMA controller
26 general GPIO
Flash 256KB FLASH;64KB SRAM;
Interface Micro USB x 1; LoRa antenna(SMA) x 1, Debug interface(8-Pin)
Size 56.6 x 24 x 20 mm
Battery Type AAA x 2
Battery detection circuit
External device power control(Vext)
Low power design Deep Sleep: 4uA
Electrical characteristics Condition Minimum Typical 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 emission   50mA  
LoRa 12dB emission   60mA  
LoRa 15dB emission   110mA  
LoRa 20dB emission   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

Package includes:

1 x Turtle Board
1 x Box

File support:

PDF Data Sheet: 
 
Know more about Turtle Board: 
 
Know more about RadioShuttle Protocol: 
 
RadioShuttle STM32 Utility (DFU Tools Special for Turtle Board): 
 
Turtle Board Pin out Diagram: 

More Detailed Photos:

Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module

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