{"product_id":"heltec-wifi-lora-32-v4-an-esp32-s3-off-grid-lora-meshtastic-communicator-with-solar-input-gnss-and-28dbm-tx-power","title":"Heltec WiFi LoRa 32 (V4) – An ESP32-S3 off-grid LoRa\/Meshtastic communicator with solar input, GNSS, and 28dBm Tx Power","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBattery Included\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eno\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ecbhioarpd\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eBOARD\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTypical Application Fields\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eEducation and Learning\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv class=\"detailmodule_dynamic\"\u003e\n \u003ckse:widget data-widget-type=\"customText\" id=\"1000000269644\" title=\"undefined\" type=\"custom\"\u003e\u003c\/kse:widget\u003e \n\u003c\/div\u003e\n\u003cdiv style=\"box-sizing:inherit;\" class=\"post-title\"\u003e\n \u003ch1 style=\"font-size:1.625rem;font-weight:300;line-height:1.4;color:#41758B;margin:0px 0px 0.25em;padding:0px;box-sizing:inherit;\" class=\"entry-title\"\u003eHeltec WiFi LoRa 32 (V4) – An ESP32-S3 off-grid LoRa\/Meshtastic communicator with solar input, GNSS, and 28dBm Tx Power\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"color:#333333;background-color:#F9F9F8;box-sizing:inherit;margin-right:auto;margin-left:auto;\" class=\"entry-content\"\u003e\n \u003cp style=\"padding:0px;box-sizing:inherit;margin-top:0px;margin-bottom:1.5em;\"\u003eWhile searching AliExpress, I found the WiFi LoRa 32 (V4) shell set, another ESP32-S3-based off-grid LoRa\/Meshtastic communicator designed for long-range wireless applications. Compared to devices like \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003eBlackout Comms\u003c\/a\u003e, \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003eWio Tracker L1 Pro\u003c\/a\u003e, and \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003eThinkNode M2\u003c\/a\u003e, this device features built-in solar charging, optional GNSS, a removable battery, and a higher transmit power.\u003c\/p\u003e\n \u003cp style=\"padding:0px;box-sizing:inherit;margin-top:0px;margin-bottom:1.5em;\"\u003eThe device features a Semtech SX1262 LoRa transceiver, an amplifier delivering up to 28 ± 1 dBm transmit power, along with integrated Wi-Fi and Bluetooth 5\/Mesh connectivity. It adds solar charging, an 8-pin GNSS connector, upgraded battery management, gold-plated 40-pin headers, and a fully protected 0.96-inch OLED, as well as a few I\/Os for expansion. The USB-C port includes ESD and short-circuit protection, while dual IPEX connectors support both LoRa and 2.4 GHz antennas.\u003c\/p\u003e\n \u003cdiv\u003e\n  \u003cbr\u003e \n \u003c\/div\u003e\n \u003cp style=\"padding:0px;box-sizing:inherit;margin-top:0px;margin-bottom:1.5em;\"\u003eHeltec WiFi LoRa 32 (V4) specifications:\u003c\/p\u003e\n \u003cul style=\"line-height:1.3em;margin:0em 0.5em;padding:0px 0px 1.5em;box-sizing:inherit;\"\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\n   \u003cdiv\u003e\n    SoC – Espressif Systems \n    \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003eESP32-S3\u003c\/a\u003e \n   \u003c\/div\u003e\n   \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eCPU – Dual-core 32-bit microcontroller @ 240MHz\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eMemory – 512KB SRAM, 2MB PSRAM\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eStorage – 384KB ROM\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eWireless – 2.4GHz Wi-Fi and Bluetooth 5.0 (LE)\u003c\/p\u003e\u003c\/li\u003e\n   \u003c\/ul\u003e\n\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eStorage – 16MB flash\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\n   \u003cdiv\u003e\n    Display\n   \u003c\/div\u003e\n   \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e0.96-inch OLED with 128×64 resolution\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eConnected via onboard soldered interface + B2B connector (Protected by a full plastic bracket)\u003c\/p\u003e\u003c\/li\u003e\n   \u003c\/ul\u003e\n\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\n   \u003cdiv\u003e\n    Wireless\n   \u003c\/div\u003e\n   \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eWiFi 4 and Bluetooth 5.0 on the ESP32-S3 module\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\n     \u003cdiv\u003e\n      LoRa\n     \u003c\/div\u003e\n     \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eSemtech SX1262 LoRa transceiver supports 433 \/ 470–510 \/ 863–928 MHz (depending on version)\u003c\/p\u003e\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\n       \u003cdiv\u003e\n        TX Power\n       \u003c\/div\u003e\n       \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n        \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eHigh-power version: 28 ±1 dBm\u003c\/p\u003e\u003c\/li\u003e\n        \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eLow-power version: 21 ±1 dBm\u003c\/p\u003e\u003c\/li\u003e\n       \u003c\/ul\u003e\n\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eSensitivity – -137 dBm @ SF12, BW 125 kHz\u003c\/p\u003e\u003c\/li\u003e\n     \u003c\/ul\u003e\n\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\n     \u003cdiv\u003e\n      Antenna\n     \u003c\/div\u003e\n     \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eLoRa IPEX 1.0 connector\u003c\/p\u003e\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e2.4 GHz Wi-Fi\/BLE antenna (FPC side-mounted)\u003c\/p\u003e\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eOptional external 2.4 GHz antenna (IPEX 1.0 pad provided; requires circuit mod)\u003c\/p\u003e\u003c\/li\u003e\n     \u003c\/ul\u003e\n\u003c\/li\u003e\n   \u003c\/ul\u003e\n\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eUSB – USB 2.0 Type-C port\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\n   \u003cdiv\u003e\n    Expansion\n   \u003c\/div\u003e\n   \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\n     \u003cdiv\u003e\n      2x 20-pin headers, mostly compatible with V3\n     \u003c\/div\u003e\n     \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e7-channel ADC1 + 2-channel ADC2\u003c\/p\u003e\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eUART, I2C, SPI\u003c\/p\u003e\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e7× touch sensor pins\u003c\/p\u003e\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003ePWM\u003c\/p\u003e\u003c\/li\u003e\n      \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e28x GPIO\u003c\/p\u003e\u003c\/li\u003e\n     \u003c\/ul\u003e\n\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e8-pin GNSS connector for optional GNSS module\u003c\/p\u003e\u003c\/li\u003e\n   \u003c\/ul\u003e\n\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\n   \u003cdiv\u003e\n    Misc\n   \u003c\/div\u003e\n   \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eUser and Reset buttons\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eWhite LED, Orange LED\u003c\/p\u003e\u003c\/li\u003e\n   \u003c\/ul\u003e\n\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\n   \u003cdiv\u003e\n    Power Supply\n   \u003c\/div\u003e\n   \u003cul style=\"line-height:1.3em;margin:0em 0.5em 0px 1.5em;padding:0px 0px 0em;list-style:disc;box-sizing:inherit;\"\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e5V\/1A via USB-C port\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e2-pin 1.25mm pitch lithium battery connector (3.3–4.4V)\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003e2-pin 1.25mm pitch solar panel connector (4.7–6V input)\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eConsumption – \u0026lt;20 μA in deep sleep\u003c\/p\u003e\u003c\/li\u003e\n    \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003ePMIC for Li-ion battery charging and solar input\u003c\/p\u003e\u003c\/li\u003e\n   \u003c\/ul\u003e\n\u003c\/li\u003e\n  \u003cli style=\"box-sizing:inherit;\"\u003e\u003cp\u003eDimensions – 51.7 × 25.4 × 10.7 mm (board dimension without antenna)\u003c\/p\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cdiv\u003e\n  \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003e\u003cimg style=\"display:block;max-width:100%;height:auto;box-sizing:inherit;margin-right:auto;margin-left:auto;\" class=\"size-medium wp-image-160763\" title=\"LoRa 32 V3 vs LoRa 32 V4\" width=\"720\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sf581cf2c70e348c6a6006b6c7e7f7e51y.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sf581cf2c70e348c6a6006b6c7e7f7e51y.jpg\"\u003e\u003c\/a\u003eDifferences between LoRa 32 V3 and V4 \n  \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003e\u003cimg style=\"display:block;max-width:100%;height:auto;box-sizing:inherit;margin-right:auto;margin-left:auto;\" class=\"wp-image-160685 size-medium lazyautosizes lazyloaded\" title=\"Heltec WiFi LoRa 32 (V4) Pinout\" width=\"720\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/S0f070aa5ef684fa8ade8bd7bc08e29cfJ.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S0f070aa5ef684fa8ade8bd7bc08e29cfJ.jpg\"\u003e\u003c\/a\u003eHeltec WiFi LoRa 32 (V4) Pinout \n  \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003e\u003cimg style=\"display:block;max-width:100%;height:auto;box-sizing:inherit;margin-right:auto;margin-left:auto;\" class=\"wp-image-160686 size-medium lazyautosizes lazyloaded\" title=\"Heltec WiFi LoRa 32 (V4) Hardware Overview\" width=\"720\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/S17c2f57bf78d4196834fb8fce000e3bfJ.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S17c2f57bf78d4196834fb8fce000e3bfJ.jpg\"\u003e\u003c\/a\u003eHeltec WiFi LoRa 32 (V4) Hardware Overview\n \u003c\/div\u003e\n \u003cp style=\"padding:0px;box-sizing:inherit;margin-top:0px;margin-bottom:1.5em;\"\u003eThe device can be programmed with Arduino IDE, the ESP-IDF framework, or PlatformIO, with Heltec providing an updated ESP32 board package, LoRa\/LoRaWAN libraries, and example projects for rapid deployment. You can also use the native USB for easier flashing and debugging, thanks to the removal of the CP2102 bridge. More information is available on \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003eHeltec’s GitHub\u003c\/a\u003e. Schematic, datasheet, 3D model, and other resources are attached to the docs and resources section of \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003ethe product page\u003c\/a\u003e. The company also mentions compatibility with \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003eMeshtastic\u003c\/a\u003e on that page, but the V4 is not listed on \u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003ethe official website\u003c\/a\u003e just yet. So we checked on the Flasher website, and Meshtastic (Beta) is indeed supported on the “Heltec V4”.\u003c\/p\u003e\n \u003cp style=\"padding:0px;box-sizing:inherit;margin-top:0px;margin-bottom:1.5em;\"\u003e\u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003e\u003cimg style=\"display:block;max-width:100%;height:auto;box-sizing:inherit;margin-right:auto;margin-left:auto;\" class=\"aligncenter size-medium wp-image-160767 lazyautosizes lazyloaded\" title=\"Heltec V4 Meshtastic\" width=\"720\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sdfd6b36843fa449db34ec519173c8ab7I.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sdfd6b36843fa449db34ec519173c8ab7I.jpg\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp style=\"padding:0px;box-sizing:inherit;margin-top:0px;margin-bottom:1.5em;\"\u003eHeltec officially refers to the board as WiFi LoRa 32 (V4), but the “WiFi LoRa 32 V4 Shell Set” is what I found on AliExpress, and it appears to be a third-party accessory bundle rather than an official Heltec product, which explains why it doesn’t show up on the company’s website. I also want to point out some FAQ highlights that may come in handy. For instance, if you plan to use an external IPEX 2.4 GHz antenna, the onboard inductor must be removed and replaced with a 0-ohm jumper to switch the RF path correctly. Heltec also notes that the V4 is compatible with the V3, since it uses the same ESP32-S3 family, OLED interface, and similar pinout, though the V4’s higher transmit power may require minor firmware adjustments in some applications.\u003c\/p\u003e\n \u003cp style=\"padding:0px;box-sizing:inherit;margin-top:0px;margin-bottom:1.5em;\"\u003e\u003ca style=\"color:#41758B;background-color:transparent;box-sizing:inherit;\" target=\"_self\" class=\"\"\u003e\u003cimg style=\"display:block;max-width:100%;height:auto;box-sizing:inherit;margin-right:auto;margin-left:auto;\" class=\"aligncenter size-medium wp-image-160688 lazyautosizes lazyloaded\" title=\"Heltec WiFi LoRa 32 (V4)\" width=\"720\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/S678f5844e5fb41988778000469a6f095I.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S678f5844e5fb41988778000469a6f095I.jpg\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"detailmodule_dynamic\"\u003e\n \u003ckse:widget data-widget-type=\"customText\" id=\"1000000180473\" title=\"undefined\" type=\"relation\"\u003e\u003c\/kse:widget\u003e \n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\u003c\/div\u003e\r\n","brand":"Yoeruyo","offers":[{"title":"V4 with display","offer_id":55506588926251,"sku":"978:107942490#V4 with display","price":363.6,"currency_code":"USD","in_stock":true},{"title":"V4 with display -GPS","offer_id":55506588959019,"sku":"978:5317977#V4 with display -GPS","price":402.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sc1a760cb225440fb9018d82b3a26df86a.webp?v=1788934811","url":"https:\/\/yoeruyo.com\/products\/heltec-wifi-lora-32-v4-an-esp32-s3-off-grid-lora-meshtastic-communicator-with-solar-input-gnss-and-28dbm-tx-power","provider":"Yoeruyo","version":"1.0","type":"link"}