Heltec WiFi LoRa 32 V4.3, ESP32-S3 and SX1262, 863-928MHz, 0.96in OLED, Solar Input

NOTE : The 863-928MHz currently available for sale are all HIGH-POWER VERSION (28 ± 1 dBm). Parameters V3 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 Parameters Description MCU ESP32-S3R2 (Xtensa®32-bit lx7 dual core processor) LoRa Chip SX1262 Frequency High-power version: 863-928MHzLow-power version: 433, 470-510, 863-928MHz Max. TX Power High-power version: 28 ± 1 dBmLow-power version: 21 ± 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 Type-C USB;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 °C Dimensions 51.7 • 25.4 • 10.7mm F&Q 2.4GHz Antenna The default 2.4G FPC antenna is located on the side of the plastic screen bracket. If you wish to use an IPEX-connected 2.4G antenna, you need to remove the inductor marked as ① in the diagram below, and add a 0-ohm resistor (or other conductive metal or cable) at the position marked ② to connect to the IPEX interface. What development methods does it support? 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. What’s the battery socket type? You can find this type of socket by search “SH1.25 x 2”. Can I order a version without the OLED display? Of course, you can contact our sales staff and provide your ideas. Are V3 and V4 compatible? They are compatible in most scenarios. Since V4 uses the same series of chips as V3, features the same OLED, and has an almost identical pin layout, V3 and V4 can be used interchangeably in the majority of cases. However, due to the increased transmit power, the transmit power settings in some code may no longer correspond directly to the actual output. Failed to upload code Please try the following steps: 1.Try using a different USB cable. 2.Enter BootLoader mode. There are two methods to enter this mode: Hold down the PRG button, connect the USB-C cable, then release the PRG button. Connect the USB-C cable, hold down the PRG button, press the RST button once, then release the PRG button.