WiFi LoRa 32 (V2)

492 kr

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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.

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

  • 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 Arduino development environment;
  • We provide ESP32 + LoRaWAN protocol Arduino® 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 solutions and deploy applications.

Technical Parameters

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

 

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

Developing documents