ESP32 Development Board Wireless Stick SX1276 LoRaWAN Protocol WIFI BLE
$40.99

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ESP32 Development Board Wireless Stick SX1276 LoRaWAN Protocol WIFI BLE

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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)
Wireless Stick (This item)	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
	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:

-On the basis of WiFi LoRa 32, it’s has a smaller size, 0.49″ OLED display, and better RF characteristics.

-CE Certificate;

-Microprocessor: ESP32 (dual-core 32-bit MCU + ULP core), with LoRa node chip SX1276/SX1278;

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

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

-Integrated WiFi, LoRa, Bluetooth three network connections, onboard Wi-Fi, Bluetooth dedicated 2.4GHz metal 3D antenna, reserved IPEX (U.FL) interface for LoRa use;

-Onboard 0.49-inch 64*32 dot matrix OLED display, which can be used to display debugging information, battery power, and other information;

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

-Support the Arduino development environment;

-(Exclusive) Supports the Arduino version of the ESP32 + LoRaWAN protocol routine provided by Heltec. This is a standard LoRaWAN protocol that can communicate with any gateway/base station running the LoRaWAN protocol (requires serial number activation, only the development of the company) The board is available, the serial number can be queried on this page);

-With good RF circuit design and basic low-power design (sleep current ≤800uA), it is convenient for IoT application vendors to quickly verify solutions and deploy applications;

Source	Parameter
MCU	ESP32( 240MHz Tensilica LX6 dual-core + 1 ULP, 600 DMIPS, 520KB SRAM, Wi-Fi, dual mode Bluetooth)
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 resources	UART x 3; SPI x 2; I2C x 2; I2S x 1
	12 – bits ADC; 8 – bits DAC
	29 general GPIO
Display	0.49 inch 64*32 OLED display
FLASH	4MB(32M-bits) SPI FLASH
Interface	Micro USB x 1; LoRa antenna interface(IPEX) x 1
Size	50.2 x 25.5 x 9.74 mm
USB to UART Bridge	CP2102
Battery Type	3.7V Lithium(SH1.25 x 2)
Battery detection circuit	√
External device power control(Vext)	√
Low power design	Deep Sleep 800uA

Electrical characteristics	Condition	Minimum	Typical	Maximum
Power Supply	USB powered(≥500mA)	4.7V	5V	6V
	Lithium powered(≥250mA)	3.3V	3.7V	4.2V
	3.3V(pin)powered(≥150mA)	2.7V	3.3V	3.5V
	5V(pin)powered(≥500mA)	4.7V	5V	6V
Power consumption(mA)	WIFI scan		115mA
	WIFI AP		135mA
	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 ESP32 Development Board

How to install Heltec ESP32 Arduino Development Environment:

Wireless Stick Source code:

Heltec ESP(ESP32 & ESP8266) framework (the basic of Heltec ESP series products Arduino running environment):

Heltec ESP32 library (must work with Heltec ESP framework):

Heltec ESP32 LoRaWAN library (a standard LoRaWAN protocol library provide by Heltec Automation, need a license to active: http://www.heltec.cn/search/):

Wireless Stick Source code:

Summary of Common Problems:

AutoCAD & 3D Drawing:

AutoCAD 2017 version drawing:

Solid Works 2014 Version 3D Drawing:

Interesting Applications by users:

Single-channel LoRa gateway solution:

Graphical interface displays sensor data (Wireless Stick + Sensor + Grafana):

More Detailed Photos:

Additional Information

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