{
  "id": "heltec-e290",
  "name": "Heltec Vision Master E290",
  "vendorId": "heltec",
  "kind": "dev-board",
  "lifecycle": "active",
  "familyId": "heltec-vision-master-e290",
  "aliases": [
    "Vision Master E290",
    "HT-VME290"
  ],
  "image": "heltec_e290.svg",
  "datasheet": "datasheet.pdf",
  "official": true,
  "product_url": "https://heltec.org/project/vision-master-e290/",
  "price": {
    "amount": 21,
    "currency": "USD",
    "asOf": "2026-06"
  },
  "description": "ESP32-S3R8 E-Ink development board with an optional SX1262 LoRa module, 2×20-pin Raspberry Pi-compatible female header, and a QuickLink sensor port. Compatible with Meshtastic/MeshCore; LoRa is a build-time option, not present on every SKU.",
  "roles": [
    "companion",
    "repeater",
    "room-server",
    "standalone-ui"
  ],
  "transports": [
    "ble",
    "usb",
    "wifi"
  ],
  "variants": [
    {
      "name": "433MHz",
      "sku": "ZC-280-3-433",
      "bands": [
        "433"
      ]
    },
    {
      "name": "470~510MHz",
      "sku": "ZC-280-3-470",
      "bands": [
        "470"
      ]
    },
    {
      "name": "863~870MHz",
      "sku": "ZC-281-3-868",
      "bands": [
        "868"
      ]
    },
    {
      "name": "902~928MHz",
      "sku": "ZC-281-3-915",
      "bands": [
        "915"
      ]
    }
  ],
  "hardware": {
    "mcu": {
      "model": "esp32-s3",
      "flashMb": 16,
      "psramMb": 8,
      "ramKb": 512
    },
    "radios": [
      {
        "technology": "lora",
        "chip": "sx1262",
        "bands": [
          "433",
          "470",
          "868",
          "915"
        ],
        "txPowerDbm": 21,
        "antenna": "IPEX-1.0"
      }
    ],
    "display": {
      "status": "present",
      "technology": "e-paper",
      "size": 2.9,
      "resolution": {
        "width": 296,
        "height": 128
      },
      "colors": "monochrome"
    },
    "gnss": {
      "status": "none"
    },
    "leds": {
      "status": "present",
      "description": "Status LED"
    },
    "power": {
      "batterySupported": true,
      "batteryBuiltIn": false,
      "batteryConnector": "SH1.25-2",
      "charging": true,
      "solarInput": false,
      "consumptionIdleMa": 0.018
    },
    "expansion": [
      {
        "type": "header-2.54",
        "count": 2,
        "pins": 20
      },
      {
        "type": "quicklink-sh2.0-4p",
        "count": 1,
        "interfaces": [
          "I2C",
          "GPIO",
          "UART"
        ]
      }
    ],
    "enclosure": {
      "builtIn": false
    },
    "physical": {
      "dimensionsMm": {
        "width": 87.96,
        "height": 36.63,
        "depth": 12
      },
      "weightG": 35
    },
    "environmental": {
      "operatingTempC": {
        "min": -20,
        "max": 70
      }
    }
  },
  "interfaces": {
    "usb": {
      "connector": "USB-C",
      "capabilities": [
        "power",
        "serial",
        "flashing"
      ]
    },
    "bluetooth": {
      "version": "5.0",
      "ble": true
    },
    "wifi": {
      "status": "present",
      "standard": "802.11 b/g/n"
    }
  },
  "source": {
    "path": "data/devices/heltec-e290/device.yaml",
    "updatedAt": "2026-06-22T21:31:07+02:00"
  },
  "vendorName": "Heltec Automation"
}