- Availability: Directly available from warehouse in Eindhoven
- SKU: 007416
A development board from Heltec based on a ESP32-S3 microcontroller by Espressif. Thanks to the built-in USB connector, it is easy to program. Things can be shown on the built-in OLED display. For extra connectivity, the board has multiple wireless communication interfaces (including Wi-Fi/Bluetooth/LoRa). Finally, the board has a battery connector where a Li-Po/Li-ion battery (not included) can be connected, which can also be charged via the board.
Compared to the V3, this version features upgrades like solar charging and increased storage capacity.
Note: Not all countries allow LoRa signals to be transmitted on 868MHz with a power of 28dBm (630mW, maximum of this module). In the Netherlands, for example, this maximum is 14dBm (25mW) around 868MHz (with the exception of 869.40 - 869.65MHz, which may be a maximum of 27dBm (500mW)). Therefore, set the maximum transmission power in such a way that it complies with local laws and regulations.
See the following page for more information: Wiki
See the following page for more information: Manufacturer page
Check the tab "Downloads" for more information and/or downloads.
Reviews Over Heltec Wi-Fi LoRa 32 V4 - ESP32-S3 - SX1262 868MHz - with 0.96 inch OLED Display
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Datasheet: 007416_WiFi_LoRa_32_V4.2.0.pdf
Specifications
| General | |
| Brand | Heltec |
| Manufacturer model/SKU | HTIT-WB32LAF |
| Model revision | V4.3 |
| Minimum operating temperature [°C] | -20 |
| Maximum operating temperature [°C] | 70 |
| Features | Display Battery charger Microcontroller (MCU) Programmable button(s) |
| General physical appearance | |
| Main color | Black |
| Weight [g] | 11 |
| Dimension X [mm] | 52 |
| Dimension Y [mm] | 25 |
| Form factor | Module (general) |
| General electrical properties | |
| Minimum supply voltage [V DC] | 4.7 |
| Maximum supply voltage [V DC] | 6 |
| Minimum IO-pin input voltage [V] | 3.3 |
| Maximum IO-pin input voltage [V] | 3.3 |
| IO-pin output voltage [V] | 3.3 |
| Maximum IO-pin source current [mA] | 40 |
| Maximum IO-pin sink current [mA] | 28 |
| MCU | |
| Manufacturer | Espressif |
| Chip series | ESP32-S3 |
| Maximum clock frequency [MHz] | 240 |
| Number of cores | 2 |
| Internal memory | |
| SRAM [KB] | 512 |
| PSRAM [MB] | 2 |
| Flash memory [MB] | 16 |
| EEPROM type | Emulated |
| Communication | |
| Hardware interface(s) | ADC I2C I2S PWM SPI GPIO UART USB CDC Native USB |
| Available GPIO pins | 0, 1, 2, 3, 4, 5, 6, 7, 15, 16, 17, 18, 19, 20, 21, 26, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48 |
| Number of IO-pins | 32 |
| Maximum available hardware PWM channels | 20 |
| Maximum available analog input pins (ADC) | 13 |
| Maximum available analog output pins (DAC) | 0 |
| Maximum available hardware UART interfaces | 3 |
| Maximum available hardware I2C interfaces | 2 |
| Maximum available hardware SPI interfaces | 2 |
| USB to serial converter | Integrated into microcontroller |
| Wireless communication | |
| Interface(s) | LoRa Wi-Fi Bluetooth |
| Wi-Fi chip/SoC | ESP32-S3 |
| Wi-Fi frequency [GHz] | 2.4 |
| Bluetooth chip/SoC | ESP32-S3 |
| Bluetooth version | 5.0 |
| Supported Bluetooth standard(s) | LE |
| LoRa chip/SoC | SX1262 |
| LoRa frequency [MHz] | 868 |
| Display | |
| Type | OLED |
| Driver | SSD1315 |
| Screen diagonal [inch] | 0.96 |
| Number of pixels long side | 128 |
| Number of pixels short side | 64 |
| Display shape | Rectangular |
| Pixel colors | Blue |
| Battery circuit | |
| Battery charger chip/SoC | CN3165 |
| Supported battery chemistry | Li-Po Li-ion |
| Maximum charging voltage [V] | 4.2 |
| Maximum charging current [mA] | 540 |
| Adjustable charging current | No |
| Protection circuit | No |
| Connectors | |
| Power supply connector(s) | USB-C female Through hole solder pin(s) (2.54mm) |
| IO-connector(s) | USB-C female Molex Picoblade (compatible) male Through hole solder pin(s) (2.54mm) |
| Battery connector(s) | Molex Picoblade (compatible) male |
| Solar panel connector(s) | Molex Picoblade (compatible) male |
| Wi-Fi/Bluetooth antenna connector | Built-in antenna IPEX MHF 1/uFL male (requires modification) |
| LoRa antenna connector | IPEX MHF 1/uFL male |
| Package contents | |
| Package contents | 1x Wi-Fi LoRa 32 V4 board 2x Male pin header 18p 2x Male pinheader 2p 1x IPEX LoRa antenna 2x Molex Picoblade compatible cable |