Heltec WiFi LoRa 32(V4), ESP32S3 + SX1262 LoRa Node, Meshtastic & LoRaWAN
|
Hardware Version Notice This revision includes RF improvements such as an upgraded FEM (KCT8103L) with software-controlled RX LNA path, optimized power circuitry, and enhanced PCB layout for improved stability and performance. It also introduces additional flexibility for antenna configuration and future RF customization. For full details, see the official update log: Note: Hardware version is subject to change based on manufacturer availability. |
Main Features
- Base on ESP32-S3R2 & SX-1262, supports Wi-Fi b/g/n, BLE, and LoRa communication.
- 2MB PSRAM and 16MB external Flash, more suitable for UI and complex system.
- LoRa Transmit Power: High-power version 28 dBm.
- PC casing protects the screen and integrates FPC 2.4G antenna.
- Form factor and pin compatibility with WiFi LoRa 32 V3.
- PC casing protects the screen and integrates FPC 2.4G antenna.
- Added SH1.25-2Pin solar panel interface, and SH1.25-8Pin GNSS interface.
- Optimized lithium battery management.
- Low power consumption is less than 20μA.
Hardware Version Comparison
| Parameters | Heltec V3 | Heltec V4 |
|---|---|---|
| MCU | ESP32-S3FN8 | ESP32-S3R2 |
| Flash | 8MB (integrated) | 16MB (external) |
| USB to Serial Chip | CP2102 | Removed CP2102 |
| Power Management | Standard Li-ion management IC | Upgraded IC supporting solar input |
| Solar Input | Not available | Added SH1.25-2P interface |
| LoRa TX Power | 21±1dBm | 28±1dBm |
| 2.4G Antenna | Metal spring antenna | FPC antenna + IPEX connector |
| GPS Interface | Not available | Added SH1.25-8Pin interface |
| Peripheral I/F | 36-pin | 40-pin |
| Screen Connection | Soldered | Soldered + B2B connector |
| Pin Craft | Silver-plated | Gold-plated |
| Screen Bracket | Partial protection | Full protection |
More Powerful MCU
The ESP32-S3R2 offers 2 MB of PSRAM and is equipped with an external 16 MB Flash, making the upgraded memory configuration more suitable for UI and complex system design.
Higher Transmission Power
This device is the high-power version. The high-power version offers a transmit power of up to 27 ± 1 dBm, enabling longer communication distances and adaptability to a wider range of application scenarios.
Layout
Pin Map
Specifications
| Parameters | Description |
|---|---|
| MCU | ESP32-S3R2 (Xtensa®32-bit lx7 dual core processor) |
| LoRa Chip | SX1262 |
| Frequency | High-power version: 863-928MHz |
| Max. TX Power | High-power version: 28 ±1 dBm |
| Max. Receiving sensitivity | -137dBm@SF12 BW=125KHz |
| Wi-Fi | 802.11 b/g/n, up to 150Mbps |
| Bluetooth | Bluetooth (LE), Bluetooth 5, Bluetooth Mesh |
| Hardware Resource | 7*ADC1 + 2*ADC2; 7*Touch; 3*UART; 2*I2C; 2*SPI; etc. |
| Memory | 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 2MB PSRAM; 16MB Flash |
| Interface | USB Type-C; SH1.25*2 Pin lithium battery interface; SH1.25*8 Pin interface; Lora ANT(IPEX1.0); 2.4G ANT(IPEX1.0) |
| Battery applicable | 3.3-4.4V lithium battery |
| Operating Temperature | -20 ~ 70 ℃ |
| Dimensions | 51.7*25.4*10.7mm |
Docs & Resource
- [Docs] — User Manual
- [Attachment] — Schematic diagram
- [Attachment] — Datasheet
- [Attachment] — 3D Model Diagram
- [Resource] — Downloadable Resources
- [Resource] — Heltec ESP32 Development Framework (Board Manager, Basic Examples)
- [Resource] — Heltec ESP32 Extension Libraries (LoRa/LoRaWAN, Sensors, etc.)
What's included
| Item | Quantity |
|---|---|
| WiFi LoRa 32 (V4) | x1 |
| LoRa Antenna | x1 |
| SH1.25×2 Connector (for battery&solar) | x2 |
| 2.54*18 Header Pin | x2 |
| 2.54*2 Header Pin | x2 |
Dev board return policy
Development boards are specialty items that generally cannot be resold on return, especially if the firmware has been flashed. Defective boards can be replaced or returned for refund within 30 days of purchase. Non-defective boards can be returned in the same time frame if in like-new condition with a 20 percent restocking fee applied. If the board has had altered firmware or became bricked due to a non-standard firmware flash, the board may not be eligible for return.
Sales tax is required in many states and will be added at checkout if applicable to your delivery state. Tax exempt forms can be sent to our support department.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Heltec WiFi LoRa 32(V4), ESP32S3 + SX1262 LoRa Node, Meshtastic & LoRaWAN
Heltec WiFi LoRa 32(V4), ESP32S3 + SX1262 LoRa Node, Meshtastic & LoRaWAN
|
Hardware Version Notice This revision includes RF improvements such as an upgraded FEM (KCT8103L) with software-controlled RX LNA path, optimized power circuitry, and enhanced PCB layout for improved stability and performance. It also introduces additional flexibility for antenna configuration and future RF customization. For full details, see the official update log: Note: Hardware version is subject to change based on manufacturer availability. |
Main Features
- Base on ESP32-S3R2 & SX-1262, supports Wi-Fi b/g/n, BLE, and LoRa communication.
- 2MB PSRAM and 16MB external Flash, more suitable for UI and complex system.
- LoRa Transmit Power: High-power version 28 dBm.
- PC casing protects the screen and integrates FPC 2.4G antenna.
- Form factor and pin compatibility with WiFi LoRa 32 V3.
- PC casing protects the screen and integrates FPC 2.4G antenna.
- Added SH1.25-2Pin solar panel interface, and SH1.25-8Pin GNSS interface.
- Optimized lithium battery management.
- Low power consumption is less than 20μA.
Hardware Version Comparison
| Parameters | Heltec V3 | Heltec V4 |
|---|---|---|
| MCU | ESP32-S3FN8 | ESP32-S3R2 |
| Flash | 8MB (integrated) | 16MB (external) |
| USB to Serial Chip | CP2102 | Removed CP2102 |
| Power Management | Standard Li-ion management IC | Upgraded IC supporting solar input |
| Solar Input | Not available | Added SH1.25-2P interface |
| LoRa TX Power | 21±1dBm | 28±1dBm |
| 2.4G Antenna | Metal spring antenna | FPC antenna + IPEX connector |
| GPS Interface | Not available | Added SH1.25-8Pin interface |
| Peripheral I/F | 36-pin | 40-pin |
| Screen Connection | Soldered | Soldered + B2B connector |
| Pin Craft | Silver-plated | Gold-plated |
| Screen Bracket | Partial protection | Full protection |
More Powerful MCU
The ESP32-S3R2 offers 2 MB of PSRAM and is equipped with an external 16 MB Flash, making the upgraded memory configuration more suitable for UI and complex system design.
Higher Transmission Power
This device is the high-power version. The high-power version offers a transmit power of up to 27 ± 1 dBm, enabling longer communication distances and adaptability to a wider range of application scenarios.
Layout
Pin Map
Specifications
| Parameters | Description |
|---|---|
| MCU | ESP32-S3R2 (Xtensa®32-bit lx7 dual core processor) |
| LoRa Chip | SX1262 |
| Frequency | High-power version: 863-928MHz |
| Max. TX Power | High-power version: 28 ±1 dBm |
| Max. Receiving sensitivity | -137dBm@SF12 BW=125KHz |
| Wi-Fi | 802.11 b/g/n, up to 150Mbps |
| Bluetooth | Bluetooth (LE), Bluetooth 5, Bluetooth Mesh |
| Hardware Resource | 7*ADC1 + 2*ADC2; 7*Touch; 3*UART; 2*I2C; 2*SPI; etc. |
| Memory | 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 2MB PSRAM; 16MB Flash |
| Interface | USB Type-C; SH1.25*2 Pin lithium battery interface; SH1.25*8 Pin interface; Lora ANT(IPEX1.0); 2.4G ANT(IPEX1.0) |
| Battery applicable | 3.3-4.4V lithium battery |
| Operating Temperature | -20 ~ 70 ℃ |
| Dimensions | 51.7*25.4*10.7mm |
Docs & Resource
- [Docs] — User Manual
- [Attachment] — Schematic diagram
- [Attachment] — Datasheet
- [Attachment] — 3D Model Diagram
- [Resource] — Downloadable Resources
- [Resource] — Heltec ESP32 Development Framework (Board Manager, Basic Examples)
- [Resource] — Heltec ESP32 Extension Libraries (LoRa/LoRaWAN, Sensors, etc.)
What's included
| Item | Quantity |
|---|---|
| WiFi LoRa 32 (V4) | x1 |
| LoRa Antenna | x1 |
| SH1.25×2 Connector (for battery&solar) | x2 |
| 2.54*18 Header Pin | x2 |
| 2.54*2 Header Pin | x2 |
Dev board return policy
Development boards are specialty items that generally cannot be resold on return, especially if the firmware has been flashed. Defective boards can be replaced or returned for refund within 30 days of purchase. Non-defective boards can be returned in the same time frame if in like-new condition with a 20 percent restocking fee applied. If the board has had altered firmware or became bricked due to a non-standard firmware flash, the board may not be eligible for return.
Sales tax is required in many states and will be added at checkout if applicable to your delivery state. Tax exempt forms can be sent to our support department.
Original: $26.97
-70%$26.97
$8.09Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
|
Hardware Version Notice This revision includes RF improvements such as an upgraded FEM (KCT8103L) with software-controlled RX LNA path, optimized power circuitry, and enhanced PCB layout for improved stability and performance. It also introduces additional flexibility for antenna configuration and future RF customization. For full details, see the official update log: Note: Hardware version is subject to change based on manufacturer availability. |
Main Features
- Base on ESP32-S3R2 & SX-1262, supports Wi-Fi b/g/n, BLE, and LoRa communication.
- 2MB PSRAM and 16MB external Flash, more suitable for UI and complex system.
- LoRa Transmit Power: High-power version 28 dBm.
- PC casing protects the screen and integrates FPC 2.4G antenna.
- Form factor and pin compatibility with WiFi LoRa 32 V3.
- PC casing protects the screen and integrates FPC 2.4G antenna.
- Added SH1.25-2Pin solar panel interface, and SH1.25-8Pin GNSS interface.
- Optimized lithium battery management.
- Low power consumption is less than 20μA.
Hardware Version Comparison
| Parameters | Heltec V3 | Heltec V4 |
|---|---|---|
| MCU | ESP32-S3FN8 | ESP32-S3R2 |
| Flash | 8MB (integrated) | 16MB (external) |
| USB to Serial Chip | CP2102 | Removed CP2102 |
| Power Management | Standard Li-ion management IC | Upgraded IC supporting solar input |
| Solar Input | Not available | Added SH1.25-2P interface |
| LoRa TX Power | 21±1dBm | 28±1dBm |
| 2.4G Antenna | Metal spring antenna | FPC antenna + IPEX connector |
| GPS Interface | Not available | Added SH1.25-8Pin interface |
| Peripheral I/F | 36-pin | 40-pin |
| Screen Connection | Soldered | Soldered + B2B connector |
| Pin Craft | Silver-plated | Gold-plated |
| Screen Bracket | Partial protection | Full protection |
More Powerful MCU
The ESP32-S3R2 offers 2 MB of PSRAM and is equipped with an external 16 MB Flash, making the upgraded memory configuration more suitable for UI and complex system design.
Higher Transmission Power
This device is the high-power version. The high-power version offers a transmit power of up to 27 ± 1 dBm, enabling longer communication distances and adaptability to a wider range of application scenarios.
Layout
Pin Map
Specifications
| Parameters | Description |
|---|---|
| MCU | ESP32-S3R2 (Xtensa®32-bit lx7 dual core processor) |
| LoRa Chip | SX1262 |
| Frequency | High-power version: 863-928MHz |
| Max. TX Power | High-power version: 28 ±1 dBm |
| Max. Receiving sensitivity | -137dBm@SF12 BW=125KHz |
| Wi-Fi | 802.11 b/g/n, up to 150Mbps |
| Bluetooth | Bluetooth (LE), Bluetooth 5, Bluetooth Mesh |
| Hardware Resource | 7*ADC1 + 2*ADC2; 7*Touch; 3*UART; 2*I2C; 2*SPI; etc. |
| Memory | 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 2MB PSRAM; 16MB Flash |
| Interface | USB Type-C; SH1.25*2 Pin lithium battery interface; SH1.25*8 Pin interface; Lora ANT(IPEX1.0); 2.4G ANT(IPEX1.0) |
| Battery applicable | 3.3-4.4V lithium battery |
| Operating Temperature | -20 ~ 70 ℃ |
| Dimensions | 51.7*25.4*10.7mm |
Docs & Resource
- [Docs] — User Manual
- [Attachment] — Schematic diagram
- [Attachment] — Datasheet
- [Attachment] — 3D Model Diagram
- [Resource] — Downloadable Resources
- [Resource] — Heltec ESP32 Development Framework (Board Manager, Basic Examples)
- [Resource] — Heltec ESP32 Extension Libraries (LoRa/LoRaWAN, Sensors, etc.)
What's included
| Item | Quantity |
|---|---|
| WiFi LoRa 32 (V4) | x1 |
| LoRa Antenna | x1 |
| SH1.25×2 Connector (for battery&solar) | x2 |
| 2.54*18 Header Pin | x2 |
| 2.54*2 Header Pin | x2 |
Dev board return policy
Development boards are specialty items that generally cannot be resold on return, especially if the firmware has been flashed. Defective boards can be replaced or returned for refund within 30 days of purchase. Non-defective boards can be returned in the same time frame if in like-new condition with a 20 percent restocking fee applied. If the board has had altered firmware or became bricked due to a non-standard firmware flash, the board may not be eligible for return.
Sales tax is required in many states and will be added at checkout if applicable to your delivery state. Tax exempt forms can be sent to our support department.
