SPECIFICATIONS
Battery: 3.7V lithium battery power supply and charging
Bluetooth: Bluetooth 5 (LE)
Brand Name: NoEnName_Null,Heltec Automation
Certification: CE,FCC
Demo Board Type: RISC-V
Dimensions: 50.2 * 25.5* 10.2 mm
Frequency: 470~510MHz, 863~928MHz
Function: ESP32 LoRa WiFi BLE
Hign-concerned Chemical: None
Intergrated Feature: WiFi 802.11b/g/n,bluetooth
LoRa Node Chip: SX1262
Master Chip: ESP32 S3FN8 (Xtensa 32 bit lx7 dual core processor)
Max. Receiving sensitivity: -136dBm@SF12 BW=125KHz
Max. TX Power: 20±2dBm
Model Number: WiFi LoRa 32 V3
Origin: Mainland China
Supported: meshstatic
USB to Serial Chip: CP2102
Wi-Fi: 802.11 b/g/n, up to 150Mbps
Description
Why do we need Maker series products?
Summary
●WiFi LoRa 32(V3) is a classic IoT dev board designed & produced by Heltec Automation.
●Since its launch in 2017, it has been loved by developers and makers.
●Widely used in numerous excellent open-source projects and directly made into products for LoRa/LoRaWAN features.
●The newly launched V3 version has the same pin sequence as the V2 version and retains Wi-Fi, BLE, LoRa, OLED display, and other functions.
●It is the best option for smart cities, farms, homes, industrial control, house security, wireless meter reading, and IoT developers.
Heltec LoRa 32 V3 with Meshtastic Video
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:
●ESP32 Paxcounter
●Disaster Radio
●Meshtastic
●Tiny GS
●...
We also provide a standard ESP32 Arduino LoRaWAN library:
●Heltec ESP32 LoRaWAN
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)
●WiFi LoRa 32 V3 Documents
●Downloadable Resource
●Hardware update logs
Pin Map
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,
863~928MHz |
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;
7*Touch;
3*UART;
2*I2C;
2*SPI; etc. |
Memory |
384KB ROM;
512KB SRAM;
16KB RTC SRAM;
8MB SiP Flash |
Interface |
Type-C USB;
2*1.25 lithium battery interface;
LoRa ANT(IPEX1.0);
2*18*2.54 Header Pin |
Battery |
3.7V lithium battery power supply and charging |
Operating Temperature |
-20 ~ 70 ℃ |
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 |
SH1.25×2 Battery Connector |
x1 |
2.54*18 Header Pin |
x2 |
FAQ
Q1: Is V2 code compatible with V3?
A1: No, the MCU is different.
Q2: Can ESP32’s WiFi and Bluetooth be used at the same time?
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.
Q3: Meshtastic screen has a digital front-end issue?
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”
Q4: What’s the battery socket type?
A4: You can find this type of socket by search “SH1.25 x 2”.
Q5: What development methods does it support?
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.
More info about Heltec products:
Company Overview
●Chengdu Heltec Automation Technology Co., Ltd. ( English abbreviation Heltec Automation).
●At present, The company's research and development and production include OLED dot matrix screen, electronic ink screen, IoT series products, LoRa supporting solutions and high-precision temperature controllers with automatic control algorithms as the core.
●At present, there is a strong technical research and development team, a scientific production and manufacturing platform and a strict quality management system.
Our Services& Strengths
Stable performance, cost-effective products, high-quality and superior service, our products have not only gained a good reputation in the country, but also received high-quality evaluation in France, Germany, Russia, the United States, South Korea and other countries.
(1). Rigorous quality assurance system.
(2). High level of service awareness.
(3). High quality team.
(4). Components use well-known brands.
(5). Quick response customer program.
(6). Self-owned processing plant, rapid production, equipped with automatic SMT placement machine, automatic screen printing machine and reflow oven.
