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Heltec STM32L151CBU6 Development Board LoRaWAN Low Power IoT Node CP2102 USB to Serial Port SX1278 Module Yuup

Original price was: $ 330,99.Current price is: $ 99,30.

SKU: us_7955794690222 Category: Electronic Components & Supplies Tags: Electronic Components & Supplies, Module Board, Smart Module

Description
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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)
WiFi LoRa 32(V2) (Product ID: 1639291)	Dev-Board	ESP32	8MB	Lithium②	√	√	800uA	OLED (128×64)
Wireless Stick (Product ID: 1639290)	Dev-Board	ESP32	8MB	Lithium②	√	√	800uA	OLED (64×32)
Wireless Stick Lite (Product ID: 1638098)	Dev-Board	ESP32-PICO	4MB	Lithium②	√	√	35uA	x
Wireless Shell (Product ID: 1638101)	Module	ESP32-PICO	4MB	–	√	x	10uA	x
LoRa Kit 151 (This item)	Dev-Board	STM32L151CBU6	128kB	Lithium	x	x	7uA	x
LoRa Node 151 (Product ID: 1638100)	Dev-Board	STM32L151CCU6	256kB	1/2 AA Lithium chlorine sulfite battery	√	√	1.8uA	x
Turtle Board (Product ID: 1638099)	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.

Feature:

-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: STM32L151CBU6 (Ultra-low-power ARM Cortex-M3 MCU with 128 Kbytes Flash), with LoRa node chip SX1278 (433MHz ~ 510MHz);

-Micro USB interface with a complete voltage regulator, ESD protection, short circuit protection, and other protection measures;

-Onboard SH1.25-2 battery interface, integrated lithium battery interface, integrated battery management system (battery power detection, USB / battery power automatic switching);

-Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing;

-This product supports DFU mode download (need to cooperate with relevant download software).

-System resource: FLASH – 128K, RAM – 16K, EEPROM – 4K;

-User available resources: FLASH – 64K, RAM – 8K, EEPROM – 4K;

-Provide standard LoRaWAN protocol routines.

-With good RF circuit design and basic low-power design (sleep current ≤7uA), it is convenient for IoT application vendors to quickly verify

-LoRaWAN protocol easily.

Source	Parameter
MCU	STM32L151CBU6 (Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3)
LoRa chip	SX1278
LoRa bands	EU_433, CN_470_510,two bands optional
LoRa maximum output power	18dB ± 1dB
Hardware Resource	USART x 3; SPI x 2; I2C x 2; ; USB 2.0 x 1
	12 – bits ADC; 12 – bits DAC
	DMA controller
	28 general GPIO
Flash	128KB FLASH;16KB SRAM;4KB EEPROM;80B BACKUP REGISTER
Interface	Micro USB x 1; LoRa antenna(IPEX) x 1
length x width x height(pin)	57 x 27 x 7(14) mm
Battery type	Lithium
Low power design	Deep Sleep: 6uA

Electrical characteristics	Condition	Minimum	Typical	Maximum
Power Supply	USB powered(≥500mA)	4.7V	5V	6V
	Lithium powered(≥250mA)	3.3V	3.6V	4.2V
	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 STM32L151CBU6 Development Board

LoRa Kit 151 Example Code:

LoRa Kit 151 Pingpang test example code (need two LoRa Kit 151 to test): https://heltec.org/wp-content/uploads/2019/07/Kit_151_PingPang.zip

LoRa Kit 151 Schematic diagram:

https://docs.heltec.cn/download/LoRa_Kit_151_sch_diagram.PDF

Summary of Common Problems:

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Fast Shipping and Professional Packing

We offer a wide range of shipping options owing to our long-standing relationships with UPS, FedEx and DHL. Our warehouse personnel will pack all goods to our exacting specifications. Your goods will go through a thorough inspection and be securely secured prior to being shipped. Every day, we deliver to thousands of customers across many countries. This shows our commitment to become the biggest online retailer on earth. Warehouses and distribution centers can be found in Europe and the USA.

Orders that contain more than one item are assigned processing times in accordance with the item.

Prior to shipping, we check the item thoroughly before sending the items. The majority of orders will be delivered within 48 hours. Delivery time ranges between 3-7 days.

Returns

The inventory is always changing and we do not completely manage it because several parties are involved, including our warehouse and factory. The actual stock levels can fluctuate at any point. Please understand it may happen that your order is out of stock after the order has been placed.

Our policy is valid for 30 days. However, if the 30 days have elapsed after you bought your product, we are unable to provide a refund or exchange.

You can only return an item if it is unused and is in the same condition the day you received it. It must also be in its original packaging.

Heltec STM32L151CBU6 Development Board LoRaWAN Low Power IoT Node CP2102 USB to Serial Port SX1278 Module Yuup

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