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

Name: Ultra-low Power Turtle Board STM32L432KC SX1276 LoRaWAN Supports LoRaWAN MQTT Single Channel Wireless Module
Brand: Generic
SKU: 1638099
Price: 75.99 USD
Availability: InStock

$75.99

Availability: In Stock

Shipping: Free Airmail

Estimated Delivery:

Model

Clear

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Handling Time

Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

Shipping Methods

You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
2. Airmail Registered – Tracked shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

Delivery Time

Airmail and Airmail Registered	Area	Estimated Delivery Time
	United States, Canada	7-25 business days
	Australia, New Zealand, Singapore, United Arab Emirates	10-25 business days
	United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland	10-25 business days
	Italy, Brazil, Russia, South Africa	10-45 business days
	Other countries	10-35 business days
Expedited Shipping	3-10 business days to Worldwide

Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

Returns & Refund

Last updated October 05, 2022

Returns

If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

Return Process

To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

Alex NLD
Attn: Returns
RMA #
HaGiborim St 8
Tiberias, 14388
Israel

Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.

Refunds

After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.

Exceptions

If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

Please provide us with following:

1. Photos of the front and back sides of the packaging box;
2. A photo, video or screenshot of the defective item or the defective part of the parcel.

Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

Warranty & Repair service

If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team and the problem is acknowledged, you can send the items back to us for a repair.

Note: Please be aware, we do not cover the cost of the returns fees in warranty & repair service.

Order Cancellation

If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.

Questions

If you have any questions concerning our return policy, please contact us at:

+972 054-536-2888
sales@alexnld.com

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:

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