diff --git a/IO_EXSensorCAM.h b/IO_EXSensorCAM.h
index 7fdfdc3..1fc5d36 100644
--- a/IO_EXSensorCAM.h
+++ b/IO_EXSensorCAM.h
@@ -16,8 +16,10 @@
  *  You should have received a copy of the GNU General Public License
  *  along with CommandStation.  If not, see <https://www.gnu.org/licenses/>.
 */
-
-#define driverVer 303
+#define driverVer 304
+// v304 static oldb0;  t(##[,%%]; 
+// v303 zipped with CS 5.2.76 and uploaded to repo (with debug)
+// v302 SEND=StringFormatter::send; remove Sp(); + 'q'; memcpy( .8) -> .7); 
 // v301 improved 'f','p'&'q' code and driver version calc. Correct bsNo calc. for 'a'							 
 // v300 stripped & revised without expander functionality. Needs sensorCAM.h v300 AND CamParser.cpp
 // v222 uses '@'for EXIORDD read.  handles <NB $> and <NN $ ##>
@@ -50,7 +52,6 @@
 #ifndef IO_EX_EXSENSORCAM_H
 #define IO_EX_EXSENSORCAM_H
 #define SEND StringFormatter::send
-
 #include "IODevice.h"
 #include "I2CManager.h"
 #include "DIAG.h"
@@ -63,7 +64,6 @@
 */
 class EXSensorCAM : public IODevice {
   public:
-
     static void create(VPIN vpin, int nPins, I2CAddress i2cAddress) {
       if (checkNoOverlap(vpin, nPins, i2cAddress)) 
       new EXSensorCAM(vpin, nPins, i2cAddress);
@@ -82,7 +82,6 @@ class EXSensorCAM : public IODevice {
       addDevice(this);
     }
 //*************************
-  uint8_t oldb0;
 void _begin() {
     uint8_t status;
     // Initialise EX-SensorCAM device
@@ -223,6 +222,7 @@ int ioESP32(uint8_t i2cAddr,uint8_t *rBuf,int inbytes,uint8_t *outBuff,int outby
 //rBuf contains packet of up to 32 bytes usually with (ascii) cmd header in rBuf[0]
 //sensorCmd command header byte from CAM (in rBuf[0]?)
 int processIncomingPkt(uint8_t *rBuf,uint8_t sensorCmd) {
+static uint8_t oldb0;   //for debug only
   int k; 
   int b;
   char str[] = "11111111";
@@ -231,7 +231,7 @@ int processIncomingPkt(uint8_t *rBuf,uint8_t sensorCmd) {
     case '`':      //response to request for digitalInputStates[] table  '@'=>'`'  
       memcpy(_digitalInputStates, rBuf+1, digitalBytesNeeded);
       if ( _digitalInputStates[0]!=oldb0) { oldb0=_digitalInputStates[0];  //debug
-        for (k=0;k<5;k++) {Serial.print(" ");Serial.print(_digitalInputStates[k],HEX);}
+//        for (k=0;k<5;k++) {Serial.print(" ");Serial.print(_digitalInputStates[k],HEX);}
       }break;                                                 
 
     case EXIORDY:  //some commands give back acknowledgement only
@@ -290,7 +290,7 @@ int processIncomingPkt(uint8_t *rBuf,uint8_t sensorCmd) {
 
     case 't':      //threshold etc. from t##           //bad pkt if 't' FF's
       if(rBuf[1]==0xFF) {Serial.println("<n bad CAM 't' packet: 74 FF  n>");_savedCmd[2] +=1; return 0;}
-      SEND(&USB_SERIAL,F("<n (t[##[,%%]]) Threshold:%d sensor S00:-%d"),rBuf[1],min(rBuf[2]&0x7F,99));
+      SEND(&USB_SERIAL,F("<n (t[##[,%%%%]]) Threshold:%d sensor S00:-%d"),rBuf[1],min(rBuf[2]&0x7F,99));
       if(rBuf[2]>127) Serial.print("##* "); 
       else{ 
         if(rBuf[2]>rBuf[1]) Serial.print("-?* "); 
diff --git a/config.example.h b/config.example.h
index 26b8cf4..c0d91f4 100644
--- a/config.example.h
+++ b/config.example.h
@@ -333,6 +333,20 @@ The configuration file for DCC-EX Command Station
 // to the sabertooth controller _as_well_. Default: Undefined.
 //
 //#define SABERTOOTH 1
+//
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// SENSORCAM
+// ESP32-CAM based video sensors require #define to use appropriate base vpin number.
+#define SENSORCAM_VPIN 700
+// For shortcut to vPin number, define CAM for ex-rail use e.g. AT(CAM 012) for S12 etc.
+#define CAM SENSORCAM_VPIN+
+
+//#define SENSORCAM2_VPIN 600   //define other CAM's if installed.
+//#define CAM2 SENSORCAM2_VPIN+ //for EX-RAIL commands e.g. IFLT(CAM2 020,1)
+//
+// For smoother power-up, define a STARTUP_DELAY to allow CAM to initialise ref images
+#define STARTUP_DELAY 5000  // up to 20sec. CS delay
+
 
 /////////////////////////////////////////////////////////////////////////////////////
-
diff --git a/myHal.cpp b/myHal.cpp
index 752bc21..cdc80df 100644
--- a/myHal.cpp
+++ b/myHal.cpp
@@ -351,12 +351,11 @@ EXIOExpander::create(800, 18, 0x65);  // NanoEXIOExpander::create(820, 18, 0x75)
   //       #define SENSORCAM_VPIN0 #00 in config.h if not using 700. 
   //   Number of VPINs=pin count (must not exceed 80)
   //   I2C address=an available I2C address (default 0x11) 
-  //       #define ESP32CAP 0x13 in config.h to raise allowable ESP32 range of addresses
-  //       Note that the I2C address (0x11) is the default in the sensorCAM code       
   //
   // EXSensorCAM::create(700, 80, 0x11);
-EXSensorCAM::create(700, 80, 0x11);  //preference is now to use HAL(700 80 0x11) in myAutomation.h
+EXSensorCAM::create(700, 80, 0x11);  
 //EXSensorCAM::create(600, 80, 0x12);  //alternate or second CAM device address creation
+  //preference is now to use HAL(EXSensorCAM 700 80 0x11) in myAutomation.h rather than :create
 }
 
 #endif