{"product_id":"vision-master-e290-esp32s3-sx1262-e-ink-lora-node-meshtastic-and-lorawan-compatible","title":"Vision Master E290, ESP32S3 + SX1262 E-Ink LoRa Node, Meshtastic and LoRaWAN Compatible","description":"\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This is the Heltec \u003cstrong\u003eVision Master E290\u003c\/strong\u003e (US Band 902-928 MHz) with Meshtastic firmware pre-installed. Perfect for Meshtastic mesh networking nodes with its large E-Ink display. \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eVision Master E290\u003c\/strong\u003e is a low-power ESP32-S3 based E-Ink LoRa development board designed for long-range wireless applications. Featuring a 2.90-inch black \u0026amp; white E-Ink display, it offers excellent readability even in direct sunlight and can retain the last image for up to 180 days after power loss.\u003c\/p\u003e\n\u003cp\u003eThis configuration comes with the US frequency band (902-928 MHz) and Meshtastic firmware pre-loaded — ready for immediate use in Meshtastic mesh networks. Ideal for off-grid communication, electronic shelf labels, asset tracking, environmental monitoring, and other low-power IoT projects.\u003c\/p\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2.90-inch E-Ink Display: 296 × 128 pixels, black \u0026amp; white with partial refresh support — ultra-low power and sunlight-readable.\u003c\/li\u003e\n\u003cli\u003eESP32-S3R8 MCU: Powerful dual-core processor with Wi-Fi and Bluetooth 5 support.\u003c\/li\u003e\n\u003cli\u003eLoRa Connectivity: SX1262 LoRa transceiver (US 902-928 MHz band) with up to 21 dBm TX power and excellent sensitivity.\u003c\/li\u003e\n\u003cli\u003ePre-flashed with Meshtastic Firmware: Ready for Meshtastic mesh networking right out of the box.\u003c\/li\u003e\n\u003cli\u003eUltra-Low Power: Only 18 µA in deep sleep — ideal for battery-powered or solar deployments.\u003c\/li\u003e\n\u003cli\u003eBattery Management: Onboard lithium battery charging circuit with USB-C, overcharge protection, and automatic power switching.\u003c\/li\u003e\n\u003cli\u003eExpansion Options: SH2.0-4P sensor interface (compatible with QuickLink sensors), 2×20 pin header (Raspberry Pi compatible), and IPEX antenna connectors.\u003c\/li\u003e\n\u003cli\u003eCompact \u0026amp; Lightweight: Small form factor perfect for portable or embedded projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/heltec.org\/wp-content\/uploads\/2024\/06\/290.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; height: 313.501px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eProduct Name\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003eVision Master E290 (US Band + Meshtastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eMCU\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003eESP32-S3R8 (Dual-core, Wi-Fi + BLE 5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eLoRa Chip\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003eSX1262\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eLoRa Frequency\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003eUS Band: 902–928 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eMax TX Power\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003e21 ±1 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eE-Ink Display\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003e2.90 inch, 296 × 128 pixels, Black \u0026amp; White (2 grayscale), partial refresh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eMemory\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003e16 MB Flash, 8 MB PSRAM, 512 KB SRAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eWireless\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003eWi-Fi 802.11 b\/g\/n, Bluetooth 5 (LE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 39.1875px;\"\u003eInterfaces\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 39.1875px;\"\u003eUSB-C, SH1.25-2P battery connector, IPEX for LoRa \u0026amp; Wi-Fi antennas, SH2.0-4P sensor port, 2×20 pin header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eBattery Support\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003e\n\u003ca href=\"https:\/\/ameridroid.com\/products\/3-7v-lipo-rechargeable-battery\" target=\"_blank\" rel=\"noopener\"\u003e3.7V Li-Ion \/ Li-Po \u003c\/a\u003e(battery not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 39.1875px;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 39.1875px;\"\u003e18 µA in deep sleep\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003e87.96 × 36.63 × 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003e35 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 20.0358%; height: 19.5938px;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"width: 79.9642%; height: 19.5938px;\"\u003eMeshtastic, LoRaWAN, Arduino, PlatformIO, 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 × Vision Master E290 board (US band, Meshtastic pre-flashed)\u003c\/li\u003e\n\u003cli\u003e1 × LoRa Antenna (IPEX)\u003c\/li\u003e\n\u003cli\u003e1 × SH1.25-2P battery connector\u003c\/li\u003e\n\u003cli\u003e2 × 2.54 mm header pins (13-pin)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/heltec.org\/wp-content\/uploads\/2024\/06\/HT-VME290-1024x739.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eNOTES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBattery is \u003cstrong\u003enot included\u003c\/strong\u003e — you can connect your own \u003ca href=\"https:\/\/ameridroid.com\/products\/3-7v-lipo-rechargeable-battery\" target=\"_blank\" rel=\"noopener\"\u003e3.7V Li-Ion or Li-Po battery\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAntenna is included for LoRa; Wi-Fi uses the onboard spring antenna.\u003c\/li\u003e\n\u003cli\u003eExcellent for building long-lasting Meshtastic nodes with persistent display.\u003c\/li\u003e\n\u003cli\u003eNot waterproof — suitable for indoor or protected outdoor use.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Heltec","offers":[{"title":"Default Title","offer_id":52734800822551,"sku":"E0987","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1884\/2123\/files\/0fe1c762582fa015eeb11bd46af9699.png?v=1776091826","url":"https:\/\/ameridroid.com\/products\/vision-master-e290-esp32s3-sx1262-e-ink-lora-node-meshtastic-and-lorawan-compatible","provider":"ameriDroid","version":"1.0","type":"link"}