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Heltec WIFI Lora Kit 32 V2 433MHZ ESP32 LoRa SX1278 esp32 0.96 Inch OLED Display


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Heltec WIFI Lora Kit 32 V2 433MHZ ESP32 LoRa SX1278 esp32 0.96 Inch OLED Display BluetoothDevelopment Board for Arduino

smart farms, smart home and IoT makers.

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WiFi LoRa 32 is a part of the “Heltec LoRa“ series, with the following features:

 CE Certificate;
2Microprocessor: ESP32 (dual-core 32-bit MCU + ULP core), with LoRa node chip SX1276/SX1278;
3Micro USB interface with complete voltage regulator, ESD protection, short circuit protection, RF shielding and other protection measures;
4Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB / battery power automatic switching);
5Integrated WiFi, LoRa, Bluetooth three network connections, on-board Wi-Fi, Bluetooth dedicated 2.4GHz metal 3D antenna, reserved IPEX (U.FL) interface for LoRa use;
6On-board 0.96-inch 128*64 dot matrix OLED display, which can be used to display debugging information, battery power and other information;
7Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing;
8Support the Arduino development environment;
9(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)
10With 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;

 Technical Parameters

MCUESP32( 240MHz Tensilica LX6 dual-core + 1 ULP, 600 DMIPS, 520KB SRAM, Wi-Fi, dual mode Bluetooth)
LoRa chipSX1278
LoRa bandsEU_433, CN_470_510, EU_863_870, US_902_928 four bands optional
LoRa maximum output power18dB ± 2dB
Hardware resourcesUART x 3; SPI x 2; I2C x 2; I2S x 1
 12 – bits ADC; 8 – bits DAC
 29 general GPIO
Display0.96 inch 128*64 OLED display
interfaceMicro USB x 1; LoRa antenna interface(IPEX) x 1
Size50.2 x 25.5 x 9.74 mm
USB to UART BridgeCP2102
Battery Type3.7V Lithium(SH1.25 x 2)
 Battery detection circuit √
External device power control(Vext) √
 Low power design Deep Sleep 800uA

 Eletrical characteristics

Electrical characteristicsconditionMinimumTypicalMaximum
Power SupplyUSB powered(≥500mA)4.7V5V6V
Lithium powered(≥250mA)3.3V3.7V4.2V
Power consumption(mA)WIFI scan      115mA      
LoRa 10dB emission50mA
LoRa 12dB emission60mA
LoRa 15dB emission110mA
LoRa 20dB emission130mA
Output3.3V pin output  500mA
5V pin output (USB powered only)  Equal to input current 
External device power control (Vext 3.3V) 350mA
SKU: 293582 Category: Development Boards

433MHz, 868MHz