diff --git a/examples/17-test.mjs b/examples/17-test.mjs
index 8e9ad8a..38ce46b 100644
--- a/examples/17-test.mjs
+++ b/examples/17-test.mjs
@@ -4,10 +4,19 @@
 */
 
 import Base from  '../../uci-base/src/base'
+import { spawn } from 'child_process'
 
 const PATH = '/opt/sockets/mcp.sock'
 
 const delay = time => new Promise(res=>setTimeout(()=>res(),time))
+
+
+
+const i2cbus = spawn('node',['-r', '@std/esm', './examples/bus'])
+i2cbus.stdout.on('data', function(buf) {
+  console.log('[I2C BUS]', String(buf))
+})
+
 ;
 (async () => {
 
diff --git a/examples/mcp17.mjs b/examples/mcp17.mjs
index 777a898..55426c0 100644
--- a/examples/mcp17.mjs
+++ b/examples/mcp17.mjs
@@ -8,9 +8,15 @@ import MCP230XX from '../src/mcp230xx-packet'
   ;
 (async () => {
 
-  let mcp_chip  = new MCP230XX({id:'mcp23008-27', chip17:true, address:0x26, bus:{host:'sbc'} })
+  // let chip8  = new MCP230XX({id:'mcp8-27', address:0x27, nmcp: { path: '/opt/sockets/mcp2.sock' }})
+  let chip17  = new MCP230XX({id:'mcp17-26', chip17:true, address:0x26})
 
-  await mcp_chip.init()
+  await chip17.init()
+  // await chip8.init()
+  console.log(await chip17.pin.cfg({pins:'all'}))
+  // console.log(await chip17.pin.cfg({pins:'all', cfg:'toggle_switch'}))
+  // console.log(await chip17.pin.cfg({pins:'all', port:'B', cfg:'toggle_switch'}))
+  // console.log(await chip8.pin.cfg({pins:'all', cfg:'toggle_switch'}))
 
 })().catch(err => {
   console.error('FATAL: UNABLE TO START SYSTEM!\n',err)
diff --git a/examples/relays-test.mjs b/examples/relays-test.mjs
deleted file mode 100644
index d0020ec..0000000
--- a/examples/relays-test.mjs
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
-* i2c bus unix socket and client in one for demo
-*
-*/
-
-import Base from  '../../uci-base/src/base'
-
-const PATH = '/opt/sockets/mcp.sock'
-
-const delay = time => new Promise(res=>setTimeout(()=>res(),time))
-;
-(async () => {
-
-  let relays = new Base({id:'relays', sockets:'uc#c>n', uc:{path:PATH}})
-
-  relays.reply = function (packet) {
-    // console.log('for request ',packet._header.request)
-    // console.log('mcp status is ',packet.status)
-  }
-
-  await relays.init()
-  console.log('=============sending============')
-
-  await relays.send({cmd:'pin.cfg', pins:'all'})
-  await relays.send({cmd:'pin.state.off', pins:'all' })
-
-  for(let i=1;i<=8;i +=2){
-    await relays.send({cmd:'pin.state.on', pins:i})
-  }
-  console.log((await relays.send({cmd:'pin.status', pins:'all'})).status)
-  console.log((await relays.send({cmd:'pin.status', pins:'3'})).status.pins)
-  await delay(3000)
-  await relays.send({cmd:'pin.state.off', pins:'all'})
-
-  relays.socket.uc.end()
-  process.kill(process.pid, 'SIGTERM')
-
-
-})().catch(err => {
-  console.error('FATAL: UNABLE TO START SYSTEM!\n',err)
-  process.kill(process.pid, 'SIGTERM')
-})
diff --git a/examples/relays.mjs b/examples/relays.mjs
deleted file mode 100644
index c805a8a..0000000
--- a/examples/relays.mjs
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
-* i2c bus with both unix and tcp socket using defaults.  For TCP that is host OS name and port 8080
-*
-*/
-import MCP230XX from '../src/mcp230xx-packet'
-
-  ;
-(async () => {
-
-  let relays = new MCP230XX({id:'relays', address:0x27, bus:{host:'sbc'} })
-
-  await relays.init()
-
-})().catch(err => {
-  console.error('FATAL: UNABLE TO START SYSTEM!\n',err)
-})
diff --git a/package.json b/package.json
index b67cb39..8ab5cbc 100644
--- a/package.json
+++ b/package.json
@@ -1,19 +1,15 @@
 {
   "name": "@uci/mcp",
-  "main": "src/mcp23008-17.js",
+  "main": "src/mcp230xx-packet.mjs",
   "version": "0.1.2",
   "description": "Classes and Helper Functions for using the MCP chip on I2C Bus",
   "scripts": {
-    "mcp": "SOCKETS_DIR=/opt/sockets node_modules/.bin/nodemon --require @std/esm examples/mcp",
-    "mcpl": "DEBUG=true SOCKETS_DIR=/opt/sockets node_modules/.bin/nodemon --require @std/esm examples/mcp",
+    "relays": "SOCKETS_DIR=/opt/sockets node --require @std/esm examples/relays",
     "test": "./node_modules/.bin/mocha --reporter list  --timeout 30000",
     "testw": "./node_modules/.bin/mocha --reporter list  -- watch --timeout 30000",
-    "testd": "DEBUG='1:*' ./node_modules/.bin/mocha --reporter list  --watch --timeout 30000",
-    "testd2": "DEBUG='1:*,2:*' ./node_modules/.bin/mocha --reporter list  --watch --timeout 30000",
-    "testd3": "DEBUG='1:*,2:*,3:*' ./node_modules/.bin/mocha --reporter list  --watch --timeout 30000",
     "testibc": "istanbul cover ./node_modules/.bin/_mocha test/ --report lcovonly -- -R spec --recursive && codecov || true",
     "sample": "node demo/sample.js",
-    "inter": "sudo node demo/interrupt.js"
+    "inter": "sudo node -r @std/esm examples/interrupt"
   },
   "author": "David Kebler",
   "license": "MIT",
@@ -31,10 +27,9 @@
   },
   "homepage": "https://github.com/uCOMmandIt/uci-mcp#readme",
   "dependencies": {
-    "@uci/i2c": "^0.1.0",
-    "@uci/utils": "^0.1.0",
-    "aggregation": "^1.2.0",
-    "bitwise": "^1.3.0"
+    "@uci/i2c-device": "^0.1.1",
+    "@uci/logger": "0.0.1",
+    "@uci/utils": "^0.1.1"
   },
   "@std/esm": "cjs",
   "devDependencies": {
diff --git a/src/commands.mjs b/src/commands.mjs
index cbac884..2ea995a 100644
--- a/src/commands.mjs
+++ b/src/commands.mjs
@@ -1,5 +1,6 @@
 // import _ from '@uci/utils/src/byte'
-import _ from '../../archive/uci-utils/src/byte'
+// import _ from '../../archive/uci-utils/src/byte'
+import _ from '@uci/utils/src/byte'
 import { CHIP, PIN } from './config'
 
 export const chip = {
@@ -41,7 +42,7 @@ export const pin = {
     for(let name of Object.keys(PIN.setting)) {
       let op = cfg[name] ? 'on' : 'off'
       // console.log(name, op)
-      let busreply = await state.bind(this)(packet,op,PIN.setting[name])
+      let busreply = await this.pin._state(packet,op,PIN.setting[name])
       if (busreply.error) return busreply
       reply.status[name] = busreply.status
     }
@@ -52,7 +53,7 @@ export const pin = {
   status: async function (packet) {
     let reg = packet.reg ? PIN.cmd[packet.reg] : PIN.cmd.gpio
     if (!reg) return {error:`unknown register ${packet.reg}`, packet:packet }
-    let reply = { cmd:'reply', _req:packet}
+    let reply = { cmd:'reply'}
     let pins = parsePins(packet.pins)
     let state = new _.Byte()
     let bus = await this.bus.read(sreg(reg, packet.port))
@@ -67,30 +68,51 @@ export const pin = {
     }
     return reply
   },
+  _state: async function(packet,op,reg){
+    reg = (reg!==undefined)? reg : PIN.cmd.gpio
+    // console.log(op, reg, packet)
+    let reply = { cmd:'reply'}
+    let pins = parsePins(packet.pins)
+    let state = new _.Byte()
+    let bus = await this.bus.read(sreg(reg,packet.port))
+    if (bus.error) return bus
+    state.value = bus.response
+    bus = await this.bus.write(sreg(reg,packet.port),state.bwOp(pins.value,op,{in:'PLC', out:'DEC'}))
+    if (bus.error) return bus
+    bus = await this.bus.read(sreg(reg,packet.port))
+    if (bus.error) return bus
+    state.value = bus.response
+    reply.status = state.bwOp(pins.value,'check',{in:'PLC', out:'PLC'})
+    return reply
+  },
   // threse three only for output pins
   state : {
     on: async function (packet) {
-      return state.bind(this)(packet,'on')
+      return this.pin._state(packet,'on')
     },
     off: async function (packet) {
-      return state.bind(this)(packet,'off')
+      return this.pin._state(packet,'off')
     },
     toggle: async function (packet) {
-      return state.bind(this)(packet,'toggle')
+      return this.pin._state(packet,'toggle')
     }
   },
-  // // will create packet to determine pin caused interrupt, packet will come from interrupt module
-  // interrupt: {
-  //   find: packet =>{},
-  //   report: packet=>{} // come here after determining which pin to report to requester
-  // }
+  // will create packet to determine pin caused interrupt, packet will come from interrupt module
+  interrupt: {
+    find: async function (packet) {
+      console.log('interrupt fired',packet)
+      return Promise.resolve({cmd:null})
+    },
+    report: ()=>{}, // come here after determining which pin to report to requester
+    async: async ()=>{}
+  }
 }
 
 const parsePins = function(pins) {
   if (typeof pins==='number') pins = [pins]
   if (typeof pins==='string') {
     if (pins==='all') pins = _.byteFormat(255,{in:'DEC', out:'PLC'})
-    else pins = pins.split(',')
+    else pins = pins.split(/[,:\s]+/).map(Number).filter( (x) => !Number.isNaN(x))
   }
   return new _.Byte(pins,'PLC')
 }
@@ -98,21 +120,3 @@ const parsePins = function(pins) {
 const sreg = (reg,port) => {
   return reg + ((port==='B') ? 0x10 : 0)
 }
-
-const state = async function(packet,op,reg){
-  reg = (reg!==undefined)? reg : PIN.cmd.gpio
-  // console.log(op, reg)
-  let reply = { cmd:'reply', _req:packet}
-  let pins = parsePins(packet.pins)
-  let state = new _.Byte()
-  let bus = await this.bus.read(sreg(reg,packet.port))
-  if (bus.error) return bus
-  state.value = bus.response
-  bus = await this.bus.write(sreg(reg,packet.port),state.bwOp(pins.value,op,{in:'PLC', out:'DEC'}))
-  if (bus.error) return bus
-  bus = await this.bus.read(sreg(reg,packet.port))
-  if (bus.error) return bus
-  state.value = bus.response
-  reply.status = state.bwOp(pins.value,'check',{in:'PLC', out:'PLC'})
-  return reply
-}
diff --git a/src/mcp230xx-packet.mjs b/src/mcp230xx-packet.mjs
index f2401a1..c4e370e 100644
--- a/src/mcp230xx-packet.mjs
+++ b/src/mcp230xx-packet.mjs
@@ -1,8 +1,9 @@
-// import Base from '@uci/base'
-import Device from '../../uci-i2c-device/src/device-packet'
+import Device from '@uci/i2c-device'
+// import Device from '../../uci-i2c-device/src/device-packet'
 import { pin, chip } from './commands'
 
-import logger from '../../uci-logger/src/logger'
+// import logger from '../../uci-logger/src/logger'
+import logger from '@uci/logger'
 let log = {}
 const LOG_OPTS = (id) => {
   return {
@@ -16,23 +17,29 @@ const LOG_OPTS = (id) => {
 
 export default class MCP230XX extends Device {
   constructor(opts) {
-    opts.nmcp = opts.nmcp || {path: (process.env.SOCKETS_DIR || __dirname)  + '/mcp.sock'}
-    opts.sockets = 'nmcp#s>n,tmcp#s>t,'
-    // console.log(opts)
+    if(opts.nmcp) {
+      if (typeof opts.nmcp.path!=='string') opts.nmcp = {path: (process.env.SOCKETS_DIR || __dirname)  + '/mcp.sock'}
+      opts.sockets = (opts.sockets ? (opts.sockets+',') : '') + 'nmcp#s>n'
+    }
+    if(opts.tmcp) {
+      if (typeof opts.nmcp.port!=='number') opts.tmcp.port = 1776
+      opts.sockets = (opts.sockets ? (opts.sockets+',') : '') + 'tmcp#s>t'
+    }
     super(opts)
     log = logger.child(LOG_OPTS(this.id))
     if (!opts.address) log.fatal({opts:opts},'no i2c bus address supplied' )
     this.address = opts.address
     this.chip17 = opts.chip17
-    this.pin = pin
-    this.chip = chip
+    this.pin = this.bindFuncs(pin)
+    this.chip = this.bindFuncs(chip)
   }
 
   async init(){
     await super.init()
     // let res = await this.chip.ack.bind(this)() // move this to device class
     // if (!res.ack) throw `no device on this bus at address ${this.address}=0x${this.address.toString(16)}`
-    let res = await this.chip.cfg.bind(this)({})
+    let res = await this.chip.cfg({})
+    // console.log(res)
     let cfg = this.chip17 ?'10100010':'00100010'
     if (res.response !==cfg ) throw `could not configure mcp chip at ${this.address}=0x${this.address.toString(16)}`
   }