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)
(Product ID:1639291):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
(This item):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
-Main control chip ESP32-PICO (dual-core 32-bit MCU + ULP core), with LoRa node chip SX1276;
-RF shielding(contain a shield shell) and other protection measures;
-Integrated WiFi, LoRa, Bluetooth network connections, both of them are IPEX socket;
-Support the ARDUIN0 development environment;
-(Exclusive) Supports the ARDUIN0 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:10uA theoretically), it is convenient for IoT application vendors to quickly verify solution and deploy applications;
Source:Parameter
MCU:ESP32-PICO-D4( 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:18 ÷ 2dB
Hardware resources:UART x 3; SPI x 2; I2C x 2; I2S x 1
12 bits ADC; 8 bits DAC
44 general GPIO
FLASH:internal 4MB(32M-bits) SPI FLASH
Interface:LoRa antenna (IPEX) x 1; Wi-Fi / BLE antenna (IPEX) x 1
Size:38.4 x 16.1mm
External device power control (Vext):￡
Low power design:deep sleep mode 10uA
Electrical characteristics:Condition:Minimum:Typical:Maximum
Power Supply:3.3V power supply(◎500mA):2.7V:3.3V:3.5V
Power consumption(mA):WIFI scan::115mA
WIFI AP::135mA
LoRa 10dB emission::100mA
LoRa 12dB emission::105mA
LoRa 15dB emission::120mA
LoRa 20dB emission::145mA
Output:External device power control Vext (3.3V):::350mA
Package includes
1 x Wireless ESP32 Module
Files support
How to install Heltec ESP32 ARDUIN0 Develoment Environment
http://www.heltec.cn/wifi_kit_install/
Wireless Shell 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
Wireless Shell Pinout Diagram
https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/blob/master/PinoutDiagram/Wireless_Shell.pdf
AutoCAD & 3D Drawing
AutoCAD 2017 version drawing:https://docs.heltec.cn/download/Wireless_Shell.dwg
Reference Hardware Design
Wireless Shell Reference Hardware Design Schematic:https://docs.heltec.cn/download/wireless_shell_reference_hardware_design.pdf
Wireless Shell Schematic & PCB Package (Altium Designer 18.1.7):https://docs.heltec.cn/download/wireless_shell_packages.zip
Summary of Common Problems
http://www.heltec.cn/summary-of-common-problems-in-wifi-kit-series-continuous-update/lang=en
Additional information
| Weight | 0.1 kg |
|---|
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