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.
ProductType?MCUFLASHBatteryBattery DetectVext?Low Power?DisplayWiFi LoRa 32Dev-BoardESP324MBLithium?xxxOLED (128x64)WiFi LoRa 32(V2)
(Product ID: 1639291)Dev-BoardESP328MBLithium???800uAOLED (128x64)Wireless Stick
(Product ID: 1639290)Dev-BoardESP328MBLithium???800uAOLED (64x32)Wireless Stick Lite
(This item)Dev-BoardESP32-PICO4MBLithium???35uAxWireless Shell
(Product ID: 1638101)ModuleESP32-PICO4MB?x10uAxLoRa Kit 151
(Product ID: 1639289)Dev-BoardSTM32L151CBU6128kBLithiumxx7uAxLoRa Node 151
(Product ID: 1638100)Dev-BoardSTM32L151CCU6256kB1/2 AA Lithium chlorine sulfite battery??1.8uAxTurtle Board
(Product ID: 1638099)Dev-BoardSTM32L432KC256kBAAA x 2??5uAx
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:
-Microprocessor: ESP32 (dual-core 32-bit MCU + ULP core + Internal 4MB FLASH), with LoRa node chip SX1276;-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;-Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing;-Support the Aduino development environment;-(Exclusive) Supports the Aduino 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 good low-power design (sleep current ? 30uA), it is convenient for IoT application vendors to quickly verify solution and deploy applications;
SourceParameterMCUESP32( 240MHz Tensilica LX6 dual-core + 1 ULP, 600 DMIPS, 520KB SRAM, Wi-Fi, dual mode Bluetooth)LoRa chipSX1276LoRa bandsEU_433, CN_470_510, EU_863_870, US_902_928 four bands optionalLoRa maximum output power18dB ± 2dBHardware resourcesUART x 3; SPI x 2; I2C x 2; I2S x 112 bits ADC; 8 bits DAC29 general GPIODisplayNoneFLASH4MB(32M-bits) SPI FLASHinterfaceMicro USB x 1; LoRa antenna interface(IPEX) x 1Size50.2 x 25.5 x 9.74 mmUSB to UART BridgeCP2102Battery Type3.7V Lithium(SH1.25 x 2)Battery detection circuit?External device power control (Vext)?Low power designDeep Sleep 30uA
Electrical characteristicsConditionMinimumTypicalMaximumPower SupplyUSB powered(?500mA)4.7V5V6V Lithium powered(?250mA)3.3V3.7V4.2V3.3V(pin)powered(?150mA)2.7V3.3V3.5V5V(pin)powered(?500mA)4.7V5V6VPower consumption(mA)WIFI scan/115mA/WIFI AP/135mA/LoRa 10dB emission/50mA/LoRa 12dB emission/60mA/LoRa 15dB emission/110mA/LoRa 20dB emission/130mA/Output3.3V pin output//500mA5V pin output (USB powered only)/Equal to the input current/External device power control (Vext 3.3V)//350mA
Package includes:
1 x Wireless ESP32 Stick Lite
File support:
How to install Heltec ESP32 Aduino Development Environment: http://www.heltec.cn/wifi_kit_install/Wireless Stick Lite Source code:
Heltec ESP(ESP32 & ESP8266) framework (the basic of Heltec ESP series products Aduino running environment): https://github.com/Heltec-Aaron-Lee/WiFi_Kit_seriesHeltec ESP32 library (must work with Heltec ESP framework): https://github.com/HelTecAutomation/Heltec_ESP32Heltec 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_LoRaWANWireless Stick Lite Pin out Diagram: https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/blob/master/PinoutDiagram/Wireless_Stick_Lite.pdfSummary of Common Problems: https://docs.heltec.cn/#/en/faq/heltec_esp_series_common_problem_summaryAutoCAD & 3D Drawing:
AutoCAD 2017 version drawing:
