diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2ccbe46
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/node_modules/
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d58d574
--- /dev/null
+++ b/README.md
@@ -0,0 +1,74 @@
+## smal lib for kasa veho (and tiktek?) smart bluetooth lightblibs
+
+small library for kasa veho lightbulbs and others like it.
+
+could not have finished this if it were not for
+[https://mjg59.dreamwidth.org/43722.html](this blog post) and
+[https://github.com/mjg59/python-tikteck](this python library) by
+[https://twitter.com/mjg59](@mjg59). so thank you a billion times for writing
+that and digging into that disassembled .so while i dug into nothing but shallow
+graves
+
+you'll note that this is nearly a carbon copy of their library
+
+i couldn't run that because i wasn't on a loonix machine, so now this has
+happened and should work on lanux and macos maybe even windows if the stars
+align. relies on the wnoderful [noble](https://github.com/sandeepmistry/noble)
+
+## use:
+
+* with a bulb you know
+
+```js
+const {pair, setColor} = require('kasa')
+pair({
+  name: 'Smart Light',
+  password: 'password obtained from adb lolcat',
+  address: 'ca:fe:0f:be:ef' // address of light
+}, dispatch => {
+  // red, green, blue, brightness
+  dispatch(setColor(0xff, 0x2a, 0x50, 0xff))
+})
+```
+
+* with a bulb you've never met:
+
+```js
+const {discover, pair, setColor} = require('kasa')
+discover({
+  name: 'Smart Light', // defaults to Smart Light
+  password: 'get this from adb lolcat'
+}, blub => {
+  console.log('a real lootblub!', blub.address)
+  pair(blub, dispatch => {
+    dispatch(setColor(0x33, 0xcc, 0xff, 0xff))
+  })
+})
+```
+
+* there is also a promise api (note that you will only get the first bulb
+  discovered this way, but the callback will keep calling you up with every
+  light it finds)
+
+```js
+const {discover, pair, setColor} = require('kasa')
+
+discover()
+  .then(pair)
+  .then(dispatch => dispatch(setColor(0xff, 0xff, 0xff, 0xff)))
+```
+
+there are some silly examples in the directory called `play/`
+
+## todo:
+
+* clean up the code (vague!)
+* fix vague todo items (which?)
+* find out why my tongue has lumps on it
+* revise the api when i have had literally any sleep in the past 3 years
+* get rich, die old
+* get to the top of Tom's top 8
+* wear sunscreen
+* learn the xaphoon
+* see how lb is doin
+* switch to crypto-js and pull parts out and see if this can run in web browsers
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..6825db9
--- /dev/null
+++ b/index.js
@@ -0,0 +1,173 @@
+const crypto = require('crypto')
+const noble = require('noble')
+
+const nobleReady = new Promise(resolve =>
+  noble.on('stateChange', state => {
+    state === 'poweredOn' && resolve()
+  })
+)
+
+const range = to => Array(to).fill().map((_, i) => i)
+
+function encrypt (key, data) {
+  key = Buffer.from(key)
+  key.reverse()
+  data = Buffer.from(data)
+  data.reverse()
+  const cipher = crypto.createCipheriv('aes-128-ecb', key, Buffer.from([]))
+  const encryptedData = cipher.update(data).reverse()
+  return encryptedData
+}
+
+function generateSk (name, password, data1, data2) {
+  name = Buffer.from(name.padEnd(16, '\u0000'))
+  password = Buffer.from(password.padEnd(16, '\u0000'))
+  const key = []
+  name.forEach((byte, index) => {
+    key.push(byte ^ password[index])
+  })
+  const data = [...data1.slice(0, 8), ...data2.slice(0, 8)]
+  return encrypt(key, data)
+}
+
+function encryptKey (name, password, data) {
+  name = Buffer.from(name.padEnd(16, '\u0000'))
+  password = Buffer.from(password.padEnd(16, '\u0000'))
+  const key = []
+  key.forEach.call(name, (byte, index) => {
+    key.push(byte ^ password[index])
+  })
+  return encrypt(data, key)
+}
+
+// mutate me mor
+function encryptPacket (sk, mac, packet) {
+  let tmp = [...mac.slice(0, 4), 0x01, ...packet.slice(0, 3), 15, 0, 0, 0, 0, 0, 0, 0]
+  tmp = encrypt(sk, tmp)
+
+  range(15).forEach(i => {
+    tmp[i] = tmp[i] ^ packet[i + 5]
+  })
+
+  tmp = encrypt(sk, tmp)
+
+  range(2).forEach(i => {
+    packet[i + 3] = tmp[i]
+  })
+
+  tmp = [0, ...mac.slice(0, 4), 0x01, ...packet.slice(0, 3), 0, 0, 0, 0, 0, 0, 0]
+
+  tmp2 = []
+
+  range(15).forEach(i => {
+    if (i === 0) {
+      tmp2 = encrypt(sk, tmp)
+      tmp[0] = tmp[0] + 1
+    }
+    packet[i + 5] ^= tmp2[i]
+  })
+
+  return Buffer.from(packet)
+}
+
+function connect (light, callback) {
+  return light.connect(() => callback(light))
+}
+
+function discover (options = {}, callback) {
+  if (arguments.length === 1) {
+    if (typeof arguments[0] === 'function') {
+      callback = arguments[0]
+      options = {}
+    }
+  }
+  const {name = 'Smart Light', password = '234', address} = options
+  const discovery = new Promise(resolve => {
+    noble.on('discover', thing => {
+      if (thing.advertisement.localName !== name) return
+      thing.password = password
+      if (address) {
+        address === thing.address && connect(thing, (...args) => {
+          callback && callback(...args)
+          resolve(...args)
+        })
+      } else {
+        connect(thing, (...args) => {
+          callback && callback(...args)
+          resolve(...args)
+        })
+      }
+    })
+  })
+  noble.startScanning()
+  return discovery
+}
+
+function pair (light, callback) {
+  let packetCount = Math.random() * 0xffff | 0
+  const name = light.name || light.advertisement.localName
+  const password = light.password
+  const mac = light.address
+  return new Promise(resolve => {
+    light.discoverAllServicesAndCharacteristics(() => {
+      const commandChar = light.services[1].characteristics[1]
+      const pairChar = light.services[1].characteristics[3]
+      const data = [0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0, 0, 0, 0, 0, 0, 0, 0]
+      const encryptedKey = encryptKey(name, password, data)
+      const packet = [0x0c]
+        .concat(data.slice(0, 8))
+        .concat([...encryptedKey].slice(0, 8))
+
+      pairChar.write(new Buffer(packet), true, () => {
+        pairChar.read((error, received) => {
+          const sk = generateSk(name, password, data.slice(0, 8), received.slice(1, 9))
+          function dispatch ([id, command, data], callback) {
+            const packet = Array(20).fill(0)
+            packet[0] = packetCount & 0xff
+            packet[1] = packetCount >> 8 & 0xff
+            packet[5] = id & 0xff
+            packet[6] = id & 0xff | 0x80
+            packet[7] = command
+            packet[8] = 0x69
+            packet[9] = 0x69
+            packet[10] = data[0]
+            packet[11] = data[1]
+            packet[12] = data[2]
+            packet[13] = data[3]
+            const macKey = Buffer.from(mac.split(':').slice(0, 6).reverse().map(n => parseInt(n, 16)))
+            const encryptedPacket = encryptPacket(sk, macKey, [...packet])
+            packetCount = packetCount > 0xffff ? 1 : packetCount + 1
+            return new Promise(resolve => {
+              commandChar.write(encryptedPacket, false, (...args) => {
+                callback && callback(...args)
+                resolve(...args)
+              })
+            })
+          }
+          callback && callback(dispatch)
+          resolve(dispatch)
+        })
+      })
+    })
+  })
+}
+
+function sendCommand (command, ...args) {
+  return [0xffff, command, args]
+}
+
+// red, green, blue, brightness
+function setColor (...values) {
+  return sendCommand(0xc1, ...values)
+}
+
+function setDefaultColor (...values) {
+  return sendCommand(0xc4, ...values)
+}
+
+module.exports = {
+  discover: (...args) => nobleReady.then(() => discover(...args)),
+  pair,
+  setColor,
+  setDefaultColor
+}
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..d9f9179
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,427 @@
+{
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+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.0.tgz",
+      "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4="
+    },
+    "raw-body": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.2.0.tgz",
+      "integrity": "sha1-mUl2z2pQlqQRYoQEkvC9xdbn+5Y=",
+      "optional": true,
+      "requires": {
+        "bytes": "2.4.0",
+        "iconv-lite": "0.4.15",
+        "unpipe": "1.0.0"
+      }
+    },
+    "send": {
+      "version": "0.15.3",
+      "resolved": "https://registry.npmjs.org/send/-/send-0.15.3.tgz",
+      "integrity": "sha1-UBP5+ZAj31DRvZiSwZ4979HVMwk=",
+      "requires": {
+        "debug": "2.6.7",
+        "depd": "1.1.0",
+        "destroy": "1.0.4",
+        "encodeurl": "1.0.1",
+        "escape-html": "1.0.3",
+        "etag": "1.8.0",
+        "fresh": "0.5.0",
+        "http-errors": "1.6.1",
+        "mime": "1.3.4",
+        "ms": "2.0.0",
+        "on-finished": "2.3.0",
+        "range-parser": "1.2.0",
+        "statuses": "1.3.1"
+      }
+    },
+    "serve-static": {
+      "version": "1.12.3",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.12.3.tgz",
+      "integrity": "sha1-n0uhni8wMMVH+K+ZEHg47DjVseI=",
+      "optional": true,
+      "requires": {
+        "encodeurl": "1.0.1",
+        "escape-html": "1.0.3",
+        "parseurl": "1.3.1",
+        "send": "0.15.3"
+      }
+    },
+    "setprototypeof": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.0.3.tgz",
+      "integrity": "sha1-ZlZ+NwQ+608E2RvWWMDL77VbjgQ="
+    },
+    "statuses": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.3.1.tgz",
+      "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4="
+    },
+    "tinycolor2": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/tinycolor2/-/tinycolor2-1.4.1.tgz",
+      "integrity": "sha1-9PrTM0R7wLB9TcjpIJ2POaisd+g=",
+      "optional": true
+    },
+    "tinygradient": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/tinygradient/-/tinygradient-0.3.1.tgz",
+      "integrity": "sha1-LZ5PvjSMSX7RHih6QzaDWz/RECI=",
+      "optional": true,
+      "requires": {
+        "tinycolor2": "1.4.1"
+      }
+    },
+    "type-is": {
+      "version": "1.6.15",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.15.tgz",
+      "integrity": "sha1-yrEPtJCeRByChC6v4a1kbIGARBA=",
+      "optional": true,
+      "requires": {
+        "media-typer": "0.3.0",
+        "mime-types": "2.1.15"
+      }
+    },
+    "unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=",
+      "optional": true
+    },
+    "utils-merge": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.0.tgz",
+      "integrity": "sha1-ApT7kiu5N1FTVBxPcJYjHyh8ivg=",
+      "optional": true
+    },
+    "vary": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.1.tgz",
+      "integrity": "sha1-Z1Neu2lMHVIldFeYRmUyP1h+jTc=",
+      "optional": true
+    },
+    "xpc-connection": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/xpc-connection/-/xpc-connection-0.1.4.tgz",
+      "integrity": "sha1-3Nf6oq7Gt6bhjMXdrQQvejTHcVY=",
+      "optional": true,
+      "requires": {
+        "nan": "2.6.2"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..bf2a183
--- /dev/null
+++ b/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "kasa",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "noble": "^1.8.1"
+  },
+  "optionalDependencies": {
+    "body-parser": "^1.17.2",
+    "express": "^4.15.3",
+    "tinygradient": "^0.3.1"
+  }
+}
diff --git a/play/cli.js b/play/cli.js
new file mode 100644
index 0000000..a634fe9
--- /dev/null
+++ b/play/cli.js
@@ -0,0 +1,51 @@
+const {createInterface} = require('readline')
+const {discover, pair, setColor} = require('..')
+
+const blubs = []
+const paired = []
+
+const prompt = 'hex color: '
+const firstPrompt = `pls give me a ${prompt.slice(0, -2)} (like #ff2a50): `
+const readline = createInterface({
+  input: process.stdin,
+  output: process.stdout,
+  prompt: firstPrompt
+})
+
+const ready = new Promise(resolve => {
+  discover(blub => {
+    const {address} = blub
+    if (!paired.includes(address)) {
+      pair(blub, dispatch => {
+        resolve()
+        blubs.push(dispatch)
+        paired.push(address)
+      })
+    }
+  })
+})
+
+const chunk = (size, sequence) => {
+  const chunks = []
+  let index = 0
+  while (index < sequence.length) {
+    chunks.push(sequence.slice(index, index += size))
+  }
+  return chunks
+}
+
+const parse = string =>
+  chunk(2, string.replace(/^#/, '')).map(hex => parseInt(hex, 16))
+
+console.log('looking for blubs...')
+
+readline.on('line', line => {
+  const color = parse(line.trim())
+  // as a little bonus, you can pass a color like #ff2a50cc
+  // where the last byte is the brightness :O
+  blubs.forEach(dispatch => dispatch(setColor(...color, 0xff)))
+  readline.setPrompt(prompt)
+  readline.prompt()
+})
+
+ready.then(() => readline.prompt())
diff --git a/play/go.js b/play/go.js
new file mode 100644
index 0000000..d59281c
--- /dev/null
+++ b/play/go.js
@@ -0,0 +1,19 @@
+const Blub = require('..')
+const blubs = []
+const paired = []
+
+Blub.discover(blub => {
+  const {address} = blub
+  if (!paired.includes(address)) {
+    Blub.pair(blub, dispatch => {
+      console.log(`got a ${address}`)
+      blubs.push(dispatch)
+      paired.push(address)
+    })
+  }
+})
+
+const randomByte = () => Math.random() * 0xf00 | 0
+
+setInterval(() =>
+  blubs.forEach(dispatch => dispatch(Blub.setColor(randomByte(), randomByte(), randomByte(), 0xff))), 250)
diff --git a/play/promise/blue.js b/play/promise/blue.js
new file mode 100644
index 0000000..f3339e3
--- /dev/null
+++ b/play/promise/blue.js
@@ -0,0 +1,7 @@
+const {discover, setColor, pair} = require('../..')
+
+const setColorWithDispatch = (...color) => dispatch => dispatch(setColor(...color, 0xff))
+
+discover()
+  .then(pair)
+  .then(setColorWithDispatch(0x33, 0x99, 0xff))
diff --git a/play/socket.js b/play/socket.js
new file mode 100644
index 0000000..00c93eb
--- /dev/null
+++ b/play/socket.js
@@ -0,0 +1,38 @@
+const fs = require('fs')
+const net = require('net')
+const Blub = require('..')
+const blubs = []
+const paired = []
+
+Blub.discover(blub => {
+  const {address} = blub
+  if (!paired.includes(address)) {
+    Blub.pair(blub, dispatch => {
+      blubs.push(dispatch)
+      paired.push(address)
+    })
+  }
+})
+
+const path = '/tmp/blub'
+
+fs.unlink(path, () => {
+  const server = net.createServer(connection => {
+    connection.on('data', data => {
+      const hexmatch = data.toString().match(/^#([\da-z]{2})([\da-z]{2})([\da-z]{2})$/)
+      const rgbmatch = data.toString().match(/^rgb\(\s*(\d+),\s*(\d+),\s*(\d+)\)$/)
+      const brightness = 0xaa
+      let red, green, blue
+      if (hexmatch) {
+        [red, green, blue] = hexmatch.slice(1).map(n => parseInt(n, 16))
+      }
+      if (rgbmatch) {
+        [red, green, blue] = rgbmatch.slice(1)
+      }
+      blubs.forEach(dispatch => dispatch(Blub.setColor(red, green, blue, brightness)))
+    })
+  }).listen(path, () => {
+    console.log('server bound on %s', path)
+  })
+})
+
diff --git a/play/socket/? b/play/socket/?
new file mode 100644
index 0000000..db2b2df
--- /dev/null
+++ b/play/socket/?
@@ -0,0 +1 @@
+these files require '../socket' to be running
diff --git a/play/socket/http.js b/play/socket/http.js
new file mode 100644
index 0000000..c253b8d
--- /dev/null
+++ b/play/socket/http.js
@@ -0,0 +1,17 @@
+// note: this one requires ./socket to be running
+const net = require('net')
+const express = require('express')
+const bodyParser = require('body-parser')
+const app = express()
+const socket = net.connect('/tmp/blub')
+
+app.use(express.static('public'))
+app.use(bodyParser.json())
+app.use(bodyParser.urlencoded({extended: true}))
+app.post('/colors', function (request, response) {
+  socket.write(request.body.color)
+  response.send('thanks!')
+})
+console.log('check http://localhost:8018/')
+app.listen(8018)
+
diff --git a/play/socket/public/index.html b/play/socket/public/index.html
new file mode 100644
index 0000000..25bcf03
--- /dev/null
+++ b/play/socket/public/index.html
@@ -0,0 +1,48 @@
+<!doctype html>
+<title>did you know that to be a valid html5 document you only need a doctype and a title</title>
+<style>
+  @keyframes woggle {
+    0% {
+      transform: rotate(-1deg)
+    }
+
+    100% {
+      transform: rotate(1deg)
+    }
+  }
+
+  * {
+    border: 2px solid hotpink;
+  }
+
+  body {
+    background: lime;
+  }
+
+  input {
+    display: 'block';
+    font-size: 4em;
+    height: 1em;
+    min-width: 2em;
+    line-height: 0.9;
+  }
+
+  pleasemakethis1wordadifferentcolour {
+    color: blue;
+    background: LightGoldenRodYellow;
+    padding: 1px;
+    animation: 0.123455678s infinite alternate woggle;
+    animation-delay: 1s;
+    display: inline-block;
+  }
+
+  [type="submit"] {
+    animation: 0.2s infinite woggle;
+  }
+</style>
+
+<h1> select a colour  and then please press <pleasemakethis1wordadifferentcolour>please</pleasemakethis1wordadifferentcolour></h1>
+<form action="http://localhost:8018/colors" method="POST">
+  <input type="color" name="color">
+  <input type="submit" value="please">
+</form>
diff --git a/play/socket/rainbow-gradient.js b/play/socket/rainbow-gradient.js
new file mode 100644
index 0000000..8fdc9af
--- /dev/null
+++ b/play/socket/rainbow-gradient.js
@@ -0,0 +1,26 @@
+const net = require('net')
+const socket = net.connect('/tmp/blub')
+const tinygradient = require('tinygradient')
+const sleep = require('../util/sleep')
+
+const rainbow = tinygradient([
+  '#ff2217',
+  '#ffaa11',
+  '#eeee22',
+  '#33ff66',
+  '#33ccff',
+  '#1111ee',
+  'purple',
+  '#9933ec',
+  '#ff22ee',
+  '#ff2255'
+]).rgb(200)
+
+;(async () => {
+  while (true) {
+    for (const color of rainbow) {
+      socket.write(color.toHexString())
+      await sleep(7 * 7 * 2)
+    }
+  }
+})()
diff --git a/play/socket/rainbow.js b/play/socket/rainbow.js
new file mode 100644
index 0000000..b2b643f
--- /dev/null
+++ b/play/socket/rainbow.js
@@ -0,0 +1,20 @@
+const net = require('net')
+const sleep = require('../util/sleep')
+const socket = net.connect('/tmp/blub')
+
+const colors = [
+  '#ff2217',
+  '#ff4522',
+  '#ffff00',
+  '#33ff66',
+  '#33ccff',
+  '#1111ee',
+  '#9933ec',
+  '#ff2a50'
+]
+
+;(async function rainbow (index = 0) {
+  socket.write(colors[index])
+  await sleep(500)
+  rainbow(index === colors.length - 1 ? 0 : index + 1)
+})()
diff --git a/play/socket/vap.js b/play/socket/vap.js
new file mode 100644
index 0000000..0efd0ad
--- /dev/null
+++ b/play/socket/vap.js
@@ -0,0 +1,11 @@
+const net = require('net')
+const socket = net.connect('/tmp/blub')
+const sleep = require('../util/sleep')
+const pink = '#f8caff'
+const blue = '#72f0ca'
+
+;(async function ａｅｓｔｈｅｔｉｃ (color = pink) {
+  socket.write(color)
+  await sleep(3000)
+  ａｅｓｔｈｅｔｉｃ(color === pink ? blue : pink)
+})()
diff --git a/play/util/sleep.js b/play/util/sleep.js
new file mode 100644
index 0000000..bfb666f
--- /dev/null
+++ b/play/util/sleep.js
@@ -0,0 +1 @@
+module.exports = (ms = 1000) => new Promise(resolve => setTimeout(resolve, ms))