{"product_id":"heltec-wifi-lora-32-v4-3-esp32-s3-sx1262-lora-node-oled-915-mhz","title":"Heltec WiFi LoRa 32 (V4.3), ESP32-S3 + SX1262 LoRa Node, OLED, 915 MHz","description":"\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This is the Heltec \u003cstrong\u003eWiFi LoRa 32 (V4.3)\u003c\/strong\u003e for the \u003cstrong\u003eUS band (902–928 MHz)\u003c\/strong\u003e with the \u003cstrong\u003eOLED display\u003c\/strong\u003e. Choose MCU: \u003cstrong\u003eESP32-S3R2\u003c\/strong\u003e (2 MB PSRAM) or \u003cstrong\u003eESP32-S3R8\u003c\/strong\u003e (8 MB PSRAM). Compatible with Meshtastic, MeshCore, and LoRaWAN.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eWiFi LoRa 32 V4\u003c\/strong\u003e is the next generation of the Heltec V3 maker board — same size and largely identical pinout, with higher LoRa TX power (high-power band \u003cstrong\u003e28±1 dBm\u003c\/strong\u003e), protected OLED, built-in 2.4 GHz FPC antenna, solar input, and a GNSS expansion interface. Hardware revision \u003cstrong\u003eV4.3\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBased on ESP32-S3 + SX1262 — Wi-Fi 802.11 b\/g\/n, Bluetooth LE \/ BT5 \/ Mesh, and LoRa.\u003c\/li\u003e\n\u003cli\u003eTwo MCU options: \u003cstrong\u003eESP32-S3R2\u003c\/strong\u003e (2 MB PSRAM; extra free pins) or \u003cstrong\u003eESP32-S3R8\u003c\/strong\u003e (8 MB PSRAM; ideal for heavy-load tasks). Both include 16 MB Flash.\u003c\/li\u003e\n\u003cli\u003eHigh-power LoRa TX up to \u003cstrong\u003e28±1 dBm\u003c\/strong\u003e on the 863–928 MHz family; this product is \u003cstrong\u003e902–928 MHz\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e0.96-inch OLED (SSD1315, 128×64) with PC screen bracket \/ casing and integrated FPC 2.4 GHz antenna.\u003c\/li\u003e\n\u003cli\u003eForm factor and pin compatibility with WiFi LoRa 32 V3 (most scenarios; TX power settings may need adjustment).\u003c\/li\u003e\n\u003cli\u003eSH1.25-2P lithium battery interface + SH1.25-2P solar panel interface; SH1.25-8Pin GNSS interface.\u003c\/li\u003e\n\u003cli\u003eType-C USB with voltage regulation, ESD \/ short-circuit protection, and RF isolation design.\u003c\/li\u003e\n\u003cli\u003eDeep sleep current less than 20 μA.\u003c\/li\u003e\n\u003cli\u003eDevelopment: Arduino, PlatformIO, ESP-IDF, MicroPython. Used with Meshtastic, MeshCore, and LoRaWAN.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMCU OPTIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28%; padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 36%; padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWiFi LoRa 32 V4 (ESP32-S3R2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 36%; padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWiFi LoRa 32 V4-R8 (ESP32-S3R8)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMCU\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eESP32-S3R2\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eESP32-S3R8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003ePSRAM\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e2 MB\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e8 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBest for\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eExtra free pins\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eHeavy-load tasks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMeshtastic firmware naming\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003efirmware-heltec-v4-xxxx (version higher than 2.7.20)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003efirmware-heltec-v4-r8-xxxx (version higher than 2.7.25)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eGPIO differences between V4 (S3R2) and V4-R8 (S3R8) include Vext_Ctrl, VGNSS_Ctrl, LED, PA_CTX, GNSS_RST, and ADC_Ctrl. Use the matching pin map \/ firmware for the MCU you select.\u003c\/p\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28%; padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72%; padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eProduct Name\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eWiFi LoRa 32 (V4.3) — 902–928 MHz, OLED display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eHardware Revision\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eV4.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMCU options\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eESP32-S3R2 or ESP32-S3R8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eLoRa Chip\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eSX1262\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eLoRa Frequency\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e902–928 MHz (US915 \/ commonly called 915 MHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMax TX Power\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e28±1 dBm (high-power \/ 863–928 MHz family)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMax Receive Sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e−137 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eWi-Fi\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e802.11 b\/g\/n, up to 150 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBluetooth\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBluetooth LE, Bluetooth 5, Bluetooth Mesh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMemory\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e384 KB ROM; 512 KB SRAM; 16 KB RTC SRAM; 2 MB or 8 MB PSRAM (by MCU); 16 MB Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e0.96-inch OLED SSD1315, 128×64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eInterfaces\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eType-C USB; SH1.25-2P battery; SH1.25-2P solar; SH1.25-8P GNSS; LoRa ANT (IPEX 1.0); 2.4G ANT (IPEX 1.0 \/ FPC on OLED bracket)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBattery \/ Solar\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e3.3–4.2 V lithium battery; solar input supported. Battery not included.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e−20 ~ 70 ℃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e51.7 × 25.4 × 10.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eProduct Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e35 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMeshtastic, MeshCore, LoRaWAN, Arduino, PlatformIO, ESP-IDF, MicroPython\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWHAT'S INCLUDED\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × WiFi LoRa 32 (V4) board (902–928 MHz, OLED) — MCU per selected variant\u003c\/li\u003e\n\u003cli\u003e1 × LoRa Antenna\u003c\/li\u003e\n\u003cli\u003e2 × 1.25×2 Connectors (for battery \u0026amp; solar)\u003c\/li\u003e\n\u003cli\u003e2 × 2.54×18 Header Pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNOTES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis product is the \u003cstrong\u003e902–928 MHz\u003c\/strong\u003e band with \u003cstrong\u003eOLED\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eStandard V4 (S3R2) and V4-R8 (S3R8) use \u003cstrong\u003edifferent Meshtastic firmware\u003c\/strong\u003e — do not flash the wrong image. On Webflasher, do not select “Meshtastic UI” (touchscreen) for standard OLED V4 boards.\u003c\/li\u003e\n\u003cli\u003eBattery is \u003cstrong\u003enot included\u003c\/strong\u003e — use a compatible \u003ca href=\"https:\/\/ameridroid.com\/products\/3-7v-lipo-rechargeable-battery\" rel=\"noopener\" target=\"_blank\"\u003e3.7V Li-Ion \/ Li-Po\u003c\/a\u003e with an SH1.25×2 connector.\u003c\/li\u003e\n\u003cli\u003eBootloader tip: connect USB-C, hold PRG, press RST once, release PRG, then flash; restart after flashing.\u003c\/li\u003e\n\u003cli\u003eRelated accessories: Heltec WiFi LoRa 32 V4 Expansion Kit and WiFi LoRa 32 Expansion Kit V2 (sold separately — kits, not this board).\u003c\/li\u003e\n\u003cli\u003eDocs: \u003ca href=\"https:\/\/wiki.heltec.org\/docs\/devices\/open-source-hardware\/esp32-series\/lora-32\/wifi-lora-32-v4\/\" rel=\"noopener\" target=\"_blank\"\u003eV4 wiki\u003c\/a\u003e, \u003ca href=\"https:\/\/wiki.heltec.org\/docs\/devices\/open-source-hardware\/esp32-series\/lora-32\/wifi-lora-32-v4_r8_board\/\" rel=\"noopener\" target=\"_blank\"\u003eV4-R8 wiki\u003c\/a\u003e, \u003ca href=\"https:\/\/heltec.org\/project\/wifi-lora-32-v4\/\" rel=\"noopener\" target=\"_blank\"\u003eproduct page\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin-top: 1.25em;\"\u003eVIDEOS\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 0.5em;\"\u003eOfficial Heltec introduction to the WiFi LoRa 32 V4.\u003c\/p\u003e\n\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; margin-bottom: 1.25em;\"\u003e\n\u003ciframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;\" src=\"https:\/\/www.youtube.com\/embed\/Y0ED7H8fIQE\" title=\"Heltec WiFi LoRa 32 V4\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-bottom: 0.5em;\"\u003eHeltec demonstration of LNA settings and LoRa reception on the V4.\u003c\/p\u003e\n\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; margin-bottom: 1.25em;\"\u003e\n\u003ciframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;\" src=\"https:\/\/www.youtube.com\/embed\/7XknxbbXkYM\" title=\"LNA ON = Better LoRa Reception? | Heltec V4\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n","brand":"Heltec","offers":[{"title":"ESP32-S3R2","offer_id":68129991983383,"sku":"U0821","price":27.95,"currency_code":"USD","in_stock":false},{"title":"ESP32-S3R8","offer_id":68129992016151,"sku":"U0822","price":37.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1884\/2123\/files\/v4001.png?v=1793196467","url":"https:\/\/ameridroid.com\/products\/heltec-wifi-lora-32-v4-3-esp32-s3-sx1262-lora-node-oled-915-mhz","provider":"ameriDroid","version":"1.0","type":"link"}