Heltec
Heltec V3 Powered by Meshtastic **Bender Case Deal Available**
Heltec V3 Powered by Meshtastic **Bender Case Deal Available**
5.0 / 5.0
(1) 1 total reviews
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WiFi LoRa 32 is a classic IoT dev-board designed & produced by Heltec Automation. Since its launch in 2017, it has been loved by developers and makers. 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.
Compared to WiFi LoRa 32 (V2), V3 has made the following upgrades:
| Item MCU | WiFi LoRa 32 (V2) ESP32-D0 | WiFi LoRa 32 (V3) ESP32-S3 |
| Item LoRa Node Chip | WiFi LoRa 32 (V2) SX1276 | WiFi LoRa 32 (V3) SX1262 |
| Item USB Socket | WiFi LoRa 32 (V2) Micro USB | WiFi LoRa 32 (V3) USB Type C |
| Item Crystal Oscillator | WiFi LoRa 32 (V2) Ordinary crystal oscillator | WiFi LoRa 32 (V3) High precision temperature compensated crystal oscillator |
| Item Low Power Features in Deep Sleep | WiFi LoRa 32 (V2) ≈800uA | WiFi LoRa 32 (V3) <10uA |
| Item Other Update | WiFi LoRa 32 (V2) | WiFi LoRa 32 (V3) Better impedance matching of RF circuits. |
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.
Specifications
| Parameters Master Chip | Description ESP32-S3FN8 (Xtensa®32-bit lx7 dual core processor) |
| Parameters LoRa Node Chip | Description SX1262 |
| Parameters USB to Serial Chip | Description CP2102 |
| Parameters Frequency |
Description 470~510MHz, 863~928MHz |
| Parameters Max. TX Power | Description 21±1dBm |
| Parameters Max. Receiving sensitivity | Description -136dBm@SF12 BW=125KHz |
| Parameters Wi-Fi | Description 802.11 b/g/n, up to 150Mbps |
| Parameters Bluetooth | Description Bluetooth 5 (LE) |
| Parameters Hardware Resource |
Description 7*ADC1 + 2*ADC2; 7*Touch; 3*UART; 2*I2C; 2*SPI; etc. |
| Parameters Memory |
Description 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 8MB SiP Flash |
| Parameters Interface |
Description Type-C USB; 2*1.25 lithium battery interface; LoRa ANT(IPEX1.0); 2*18*2.54 Header Pin |
| Parameters Battery | Description 3.7V lithium battery power supply and charging |
| Parameters Operating Temperature | Description -20 ~ 70 ℃ |
| Parameters Dimensions | Description 50.2 * 25.5* 10.2 mm |
***Case shown for illustration purposes only***
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The Heltec V3
It's version 3 which means only natural that I am now in possession of 3 of these beauties.
Also I am the proud owner of both the Bender case which I use as one of my 'Home Nodes' and the Nibbler Case which I use for my 'Roaming node' - Both fantastic build quality cases, highly recommend.
The Heltec V3 unit itself, solid choice, gets the job done, easy to flash the firmware and maintain and a single 1860 battery will keep it going for most if not all of the day! The built in display is clear and has been commented on with people asking 'What's that cool matrix thing you've got there'.
The Heltec V3 has also got GPIO Pins on the board itself as well which means for those who like tinkering with electronics can add additional sensors, switches, dials and have things like local temperature / humidity / windspeed data transmitted over the mesh as well.
Can recommend!
The Heltec V3
It's version 3 which means only natural that I am now in possession of 3 of these beauties.
Also I am the proud owner of both the Bender case which I use as one of my 'Home Nodes' and the Nibbler Case which I use for my 'Roaming node' - Both fantastic build quality cases, highly recommend.
The Heltec V3 unit itself, solid choice, gets the job done, easy to flash the firmware and maintain and a single 1860 battery will keep it going for most if not all of the day! The built in display is clear and has been commented on with people asking 'What's that cool matrix thing you've got there'.
The Heltec V3 has also got GPIO Pins on the board itself as well which means for those who like tinkering with electronics can add additional sensors, switches, dials and have things like local temperature / humidity / windspeed data transmitted over the mesh as well.
Can recommend!