diff --git a/examples/17-test.mjs b/examples/17-test.mjs
index 442878e..8e9ad8a 100644
--- a/examples/17-test.mjs
+++ b/examples/17-test.mjs
@@ -33,57 +33,15 @@ const delay = time => new Promise(res=>setTimeout(()=>res(),time))
   await mcpclient.send(packet)
   packet = {cmd:'pin.state.off', pins:'all', port:'B' }
   await mcpclient.send(packet)
-  packet = {cmd:'pin.state.on', pins:'1,7', port:'B' }
+  packet = {cmd:'pin.state.on', pins:'2,7', port:'B' }
   await mcpclient.send(packet)
-  packet = {cmd:'pin.state.on', pins:'3,4'}
+  packet = {cmd:'pin.state.on', pins:'3,6'}
   await mcpclient.send(packet)
   packet = {cmd:'pin.status', pins:'all'}
   await mcpclient.send(packet)
   packet = {cmd:'pin.status', pins:'all', port:'B'}
   await mcpclient.send(packet)
 
-  // mcpclient.send(packet)
-  // await delay(1000)
-  // packet = {cmd:'pin.state.on', pins:pins}
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // await delay(1000)
-  // packet = {cmd:'pin.status', reg:'xintf', pins:pins}
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // await delay(1000)
-  // packet = {cmd:'pin.status', pins:pins}
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // await delay(1000)
-
-
-
-  // packet = {cmd:'pin.cfg', pins:pins, cfg:'toggle_switch'}
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // await delay(1000)
-  // packet = {cmd:'pin.cfg', pins:pins}
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // await delay(1000)
-  // packet = {cmd:'pin.state.on', pins:pins, }
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // await delay(1000)
-  // packet = {cmd:'pin.state.toggle', pins:pins, }
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // await delay(1000)
-  // packet = {cmd:'pin.state.toggle', pins:pins, }
-  // console.dir(packet)
-  // mcpclient.send(packet)
-  // packet = {cmd:'pin.cfg', pins:3}
-  // console.dir(packet)
-  // mcpclient.send(packet)
-
-
-  await delay(10000)
   process.kill(process.pid, 'SIGTERM')
 
 
diff --git a/examples/mcp17.mjs b/examples/mcp17.mjs
index 2da4e40..777a898 100644
--- a/examples/mcp17.mjs
+++ b/examples/mcp17.mjs
@@ -8,7 +8,7 @@ import MCP230XX from '../src/mcp230xx-packet'
   ;
 (async () => {
 
-  let mcp_chip  = new MCP230XX({id:'mcp23008-27', chip17:true address:0x26, bus:{host:'sbc'} })
+  let mcp_chip  = new MCP230XX({id:'mcp23008-27', chip17:true, address:0x26, bus:{host:'sbc'} })
 
   await mcp_chip.init()
 
diff --git a/examples/relays-test.mjs b/examples/relays-test.mjs
index af1cff9..d0020ec 100644
--- a/examples/relays-test.mjs
+++ b/examples/relays-test.mjs
@@ -32,9 +32,11 @@ const delay = time => new Promise(res=>setTimeout(()=>res(),time))
   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
index 370463f..c805a8a 100644
--- a/examples/relays.mjs
+++ b/examples/relays.mjs
@@ -3,7 +3,6 @@
 *
 */
 import MCP230XX from '../src/mcp230xx-packet'
-// const PATH = ''
 
   ;
 (async () => {
diff --git a/src/commands.mjs b/src/commands.mjs
index 22a1973..cbac884 100644
--- a/src/commands.mjs
+++ b/src/commands.mjs
@@ -3,19 +3,11 @@ import _ from '../../archive/uci-utils/src/byte'
 import { CHIP, PIN } from './config'
 
 export const chip = {
-  ack: async function(){
-    let bus = await this.send('bus',{ cmd:'scan'})
-    if (bus.error) return bus
-    let res = { cmd:'reply', ack: false, address:this.address, scan:bus.response}
-    if (bus.response.indexOf(this.address) !== -1) res.ack = true
-    return res
-  },
   // for custom chip configuration set packet.cfg='custom' then packet.setting should be a
   // configuration byte with given format ('STR' by defaul).
   cfg: async function(packet){
-    busPacket = busPacket.bind(this)
     // first make sure chip is in set to BANK=0 if not already
-    let bus = await this.send('bus',busPacket('write',0x05,0))
+    let bus = await this.bus.write(0x05,0)
     if (bus.error) return bus
     let setting = {}
     let cfg = packet.cfg || 'default'
@@ -27,9 +19,9 @@ export const chip = {
     let byte = _.byteFormat(setting.val, { in: setting.fmt, out: 'DEC' })
     if (byte < 128) byte += 128  // make sure BANK=1 remains on
     let reg = this.chip17 ? 0x0A : 0x05
-    bus = await this.send('bus',busPacket('write',reg,byte))
+    bus = await this.bus.write(reg,byte)
     if (bus.error) return bus
-    bus = await this.send('bus',busPacket('read',0x05))
+    bus = await this.bus.read(0x05)
     if (bus.error) return bus
     return { cmd:'reply', response:_.byteFormat(bus.response,{in:'DEC',out:'STR'}) }
   }
@@ -63,7 +55,7 @@ export const pin = {
     let reply = { cmd:'reply', _req:packet}
     let pins = parsePins(packet.pins)
     let state = new _.Byte()
-    let bus = await this.send('bus',busPacket.bind(this)('read',reg, packet.port))
+    let bus = await this.bus.read(sreg(reg, packet.port))
     if (bus.error) return bus
     state.value = bus.response
     reply.status =
@@ -103,26 +95,22 @@ const parsePins = function(pins) {
   return new _.Byte(pins,'PLC')
 }
 
-let busPacket = function (cmd,reg,byte,port) {
-  if (typeof byte==='string') port = byte
-  let shift = (port==='B') ? 0x10 : 0
-  let packet = { cmd:cmd, args: {address:this.address, cmd:reg+shift, byte:byte } }
-  return packet
+const sreg = (reg,port) => {
+  return reg + ((port==='B') ? 0x10 : 0)
 }
 
 const state = async function(packet,op,reg){
-  busPacket = busPacket.bind(this)
   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.send('bus',busPacket('read',reg, packet.port))
+  let bus = await this.bus.read(sreg(reg,packet.port))
   if (bus.error) return bus
   state.value = bus.response
-  bus = await this.send('bus',busPacket('write',reg,state.bwOp(pins.value,op,{in:'PLC', out:'DEC'}),packet.port))
+  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.send('bus',busPacket('read',reg, packet.port))
+  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'})
diff --git a/src/mcp230xx-packet.mjs b/src/mcp230xx-packet.mjs
index 6ffd7de..f2401a1 100644
--- a/src/mcp230xx-packet.mjs
+++ b/src/mcp230xx-packet.mjs
@@ -1,57 +1,46 @@
 // import Base from '@uci/base'
-import Base from '../../uci-base/src/base'
+import Device from '../../uci-i2c-device/src/device-packet'
 import { pin, chip } from './commands'
 
 import logger from '../../uci-logger/src/logger'
 let log = {}
-const LOG_OPTS = {
-  repo:'uci-mcp',
-  npm:'@uci/mcp',
-  file:'src/mcp230xx-packet.mjs',
-  class:'MCP230XX',
-  id:this.id,
-  instance_created:new Date().getTime()
-}
+const LOG_OPTS = (id) => {
+  return {
+    repo:'uci-mcp',
+    npm:'@uci/mcp',
+    file:'src/mcp230xx-packet.mjs',
+    class:'MCP230XX',
+    id:id,
+    instance_created:new Date().getTime()
+  }}
 
-export default class MCP230XX extends Base {
+export default class MCP230XX extends Device {
   constructor(opts) {
-    log = logger.child(LOG_OPTS)
-    if (opts.bus) {
-      if (opts.bus.host) {
-        opts.bus.socket = 'bus#c>t'
-        opts.bus.port = opts.bus.port || 1776
-      }
-      if (opts.bus.path) opts.bus.socket = 'bus#c>n'
-    } else {
-      opts.bus = { path :  (process.env.SOCKETS_DIR || __dirname)  + '/i2c-bus.sock' }
-      opts.bus.socket = 'bus#c>n'
-    }
     opts.nmcp = opts.nmcp || {path: (process.env.SOCKETS_DIR || __dirname)  + '/mcp.sock'}
-    opts.sockets = 'nmcp#s>n,tmcp#s>t,'+ opts.bus.socket
-    console.log(opts)
+    opts.sockets = 'nmcp#s>n,tmcp#s>t,'
+    // console.log(opts)
     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.busSend = this.busSend.bind(this)
-
   }
 
   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)}`
-    res = await this.chip.cfg.bind(this)({})
+    // 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 cfg = this.chip17 ?'10100010':'00100010'
     if (res.response !==cfg ) throw `could not configure mcp chip at ${this.address}=0x${this.address.toString(16)}`
   }
 
 
-  // this services the reply from the bus
-  reply (bus_packet) {
-    this.emit(bus_packet.id, bus_packet)
+  // this overwrites the default cmd 'reply' from the bus
+  reply (packet) {
+    // console.log(packet._header.request, packet.response)
   }
 
 } // end of MCP230XX Class