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

ESP32 Development Board Wireless Stick SX1276 LoRaWAN Protocol WIFI BLE

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$40.99

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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)
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:

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

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