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:Type↘:MCU:FLASH:Battery:Battery Detect:Vext:Low Power:Display
WiFi LoRa 32:Dev-Board:ESP32:4MB:Lithium:x:x:x:OLED (128×64)
WiFi LoRa 32(V2)
(This item):Dev-Board:ESP32:8MB:Lithium:￡:￡:800uA:OLED (128×64)
Wireless Stick
(Product ID:1639290):Dev-Board:ESP32:8MB:Lithium:￡:￡:800uA:OLED (64×32)
Wireless Stick Lite
(Product ID:1638098):Dev-Board:ESP32-PICO:4MB:Lithium:￡:￡:35uA:x
Wireless Shell
(Product ID:1638101):Module:ESP32-PICO:4MB:￡:x:10uA:x
LoRa Kit 151
(Product ID:1639289):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
↘ Type
Dev-Board Can be used directly;
Module Only core function, need to cooperate with external PCB or circuit.
Lithium:All lithium battery socket for Heltec boards is SH1.25-2;
Vext:3.3V(500mA) output, for external devices (e.g. sensors) power supply, in deep sleep mode, Vext can be shut down via software;
Low Power:Products’ low power design, of Whole Circuit, the measured data are the current of the system during deep sleep.
Feature
-WiFi LoRa 32 is a classic IoT dev-board designed & produced by Heltec Automation(TM), it’s a highly integrated product based on ESP32 + SX127x, it has Wi-Fi, BLE, LoRa functions, also Li-Po battery management system, 0.96▼ OLED are also included. It’s the best choice for smart cities, smart farms, smart home, and IoT makers.
-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 0.96-inch 128*64 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 ARDUIN0 development environment;
-We provide ESP32 + LoRaWAN protocol ARDUIN0 library, this is a standard LoRaWAN protocol that can communicate with any LoRa gateway running the LoRaWAN protocol. In order to make this code running, a unique license is needed. it can be found 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 solution 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 (868 and 915 version); SX1278 (433 and 470 version)
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:0.96 inch 128*64 OLED display
FLASH:8MB(64M-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 Development Board
How to install Heltec ESP32 ARDUIN0 Development Environment
http://www.heltec.cn/wifi_kit_install/
Heltec ESP32 Series Source code
Heltec ESP(ESP32 & ESP8266) framework (the basic of Heltec ESP series products ARDUIN0 running environment):https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series
Heltec ESP32 library (must work with Heltec ESP framework):https://github.com/HelTecAutomation/Heltec_ESP32
Heltec ESP32 LoRaWAN library (a standard LoRaWAN protocol library provide by Heltec Automation, need a license to active:http://www.heltec.cn/search/):https://github.com/HelTecAutomation/ESP32_LoRaWAN
Adafruit CircuitPython TinyLora library (Alan Peaty ported and shared this library):https://github.com/fantasticdonkey/uLoRa
WiFi LoRa 32 Pin out Diagram
https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/blob/master/PinoutDiagram/WIFI_LoRa_32_V2.pdf
WiFi LoRa 32 Schematic Diagram
https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/tree/master/SchematicDiagram/WiFi_LoRa_32(V2)
The upgrade of WiFi LoRa 32(V2) relative to V1
https://docs.heltec.cn/ /en/user_manual/the_upgrade_of_wifi_lora_32_v2_compare_with_v1
Summary of Common Problems
https://docs.heltec.cn/ /en/faq/heltec_esp_series_common_problem_summary
AutoCAD & 3D Drawing
AutoCAD 2017 version drawing:https://docs.heltec.cn/download/WiFi_Kit.dwg
Solid Works 2014 Version 3D drawing:https://docs.heltec.cn/download/WiFi_Kit.zip
Interesting applications made by WiFi LoRa 32
Paxcounter:https://github.com/cyberman54/ESP32-Paxcounter
A low-cost LoRa ioT solution:https://github.com/CongducPham/LowCostLoRaGw
As a model remote control:http://www.moz8.com/thread-172414-1-1.html_dsign=4feb6948
Used to prevent hay and straw fires:https://www.ibm.com/developerworks/cn/iot/library/iot-lpwan-lora-nodemcu-dhtsensors/
WiFi instant camera:https://hackaday.io/project/162256-esp32-8266-wifi-instant-camera
morserino (Morse code with a multi-functional morserino device):http://www.morserino.info/morserino-32.html
MicroPython example (IoT examples with many sensors and detail docs)
https://www.rosietheredrobot.com/2019/04/lora-wan-kenobi.html
https://www.rosietheredrobot.com/2020/02/battle-of-bletain.html
LoRa sensor node config & usage video:https://youtu.be/YJwjZOkhdD8 https://youtu.be/8-bIp66ON1I
Single-channel LoRa gateway solution:https://github.com/things4u/ESP-1ch-Gateway-v5.0
User test info report
General test report:https://robotzero.one/heltec-wifi-lora-32/
Communication distance test
YouTube:click to play
Additional information
| Weight | 0.1 kg |
|---|
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