Product Summary
Main Features
● Microprocessor: ESP32-S3FN8 (Xtensa® 32-bit LX7 dual-core processor, five-stage pipeline rack Structure, frequency up to 240 MHz).
● SX1262 LoRa node chip.
● Type-C 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).
● Onboard 0.96-inch 128*64 dot matrix OLED display can be used to display debugging information, battery power, and other information.
● Integrated WiFi, LoRa, Bluetooth three network connections, onboard Wi-Fi, Bluetooth dedicated 2.4GHz metal spring antenna, reserved IPEX (U.FL) interface for LoRa use.
● Integrated CP2102 USB to serial port chip, convenient for program downloading, and debugging information printing.
● Support the Arduino development environment.
● With good RF circuit design and low-power design.
WiFi LoRa 32 (V3) supports the following development methods:
Compared to WiFi LoRa 32 (V2), V3 has made the following upgrades:
WiFi LoRa 32 is compatible with the following open-source projects:
●Disaster Radio
●...
We also provide a standard ESP32 Arduino LoRaWAN library:
This library is already included in the Heltec ESP32 Arduino Framework by default.
Resource
●WiFi LoRa 32 V3 details on Heltec website
●Heltec ESP32 Arduino Framework(Include ESP32 Arduino LoRaWAN library)
Pin Map
Dimension
WIth Shell
No Shell
Specifications
Parameters |
Description |
Master Chip |
ESP32-S3FN8 (Xtensa®32-bit lx7 dual core processor) |
LoRa Node Chip |
SX1262 |
USB to Serial Chip |
CP2102 |
Frequency |
470-510MHz, |
Max. TX Power |
21±1dBm |
Max. Receiving sensitivity |
-134dBm@SF12 BW=125KHz |
Wi-Fi |
802.11 b/g/n, up to 150Mbps |
Bluetooth |
Bluetooth 5 (LE) |
Hardware Resource |
7*ADC1 + 2*ADC2; |
Memory |
384KB ROM; |
Interface |
Type-C USB; |
Battery |
3.7V lithium battery power supply and charging |
Operating Temperature |
-20 - 70 deg C |
Dimensions |
50.2 * 25.5* 10.2 mm |
Packing List
The default packing list without selecting any accessories is as follows:
Item |
Quantity |
WiFi LoRa 32 (V3) |
x1 |
LoRa Antenna |
x1 |
SH1.25x2 Battery Connector |
x1 |
2.54*18 Header Pin |
x2 |
FAQ
A1: No, the MCU is different.
A2: No, the WiFi LoRa 32 don't have an external PSRAM, if your application need use Bluetooth and Wi-Fi at the same time, you can look into this product: Heltec Wireless Bridge.
A3: It's caused by the meshtastic setting. Changing the default screen to SSD1306 can solve the problem.
The specific steps are as follows:
"Radio configuration"→"Display"→"Override OLED auto-detect"→"SSD1306"
A4: You can find this type of socket by search "SH1.25 x 2".
A5: Arduino
Micro Python
Platform.io
Espressif IDE
We strongly recommend using Arduino. We have complete technical support and provide complete LoRaWAN code for ESP32 Arduino framework.
Q6: Can the onboard 2.4GHz antenna be replaced?
A6: The 2.4GHz antenna is a spring antenna, and there is no additional interface on the board for 2.4GHz wireless signals.