{
  "$type": "site.standard.document",
  "bskyPostRef": {
    "cid": "bafyreiemhsfk4wvwvxty5664cutzeht34kr7x5cumlce6dipmmim6arp2a",
    "uri": "at://did:plc:ymc4gnswuis3jispcsmozvs2/app.bsky.feed.post/3mmax7yycgyp2"
  },
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreiepito6vcyxly2effz5vodk44kkwldtkf33jgvsx26jippo2qldqa"
    },
    "mimeType": "image/jpeg",
    "size": 62259
  },
  "path": "/2026/05/19/building-a-device-to-map-magnetic-fields/",
  "publishedAt": "2026-05-20T02:00:49.000Z",
  "site": "https://hackaday.com",
  "tags": [
    "Misc Hacks",
    "ESP32",
    "magnetic field",
    "screen",
    "…read more"
  ],
  "textContent": "Magnetic fields are all around us. We can’t really feel or see them ourselves, per se, but we can map them with the right hardware, like this device built by …read more",
  "title": "Building A Device To Map Magnetic Fields"
}