Matrix user forums

I want to use k type probes on my system. I see there is a component for it. I understand 100 % about cold junction temperatures. I understand the need for a thermistor. What I cannot figure out is the hardware wiring. K type probes only give out millivolts. Could someone be kind enough to explain t...

I can now confirm that this Display functions 100 %

thanks a lot for the help

The wait pressed and wait release function, I assume holds up the code from execution.
I need to use these functions but would only like it available for say 2 seconds, and if the key is not pressed or released in 2 seconds the code must carry on.
Any ideas how this can be done.

Regards
Roy

Thank you

Topway Lcd Module LMB162ABC
I want to use this LCD display,
Is this board compatible with the lCD display 16X2 component in version 6.
I attached the technical document.
Pin for pin it seems compatible, however I am not sure about the writing to this display.

In version 4 the keypad component the wiring was wired as follows. Col 1 D0 Col 2 D1 Col 3 D2 Row A D4 Row B D5 Row C D6 Row D D7 Questions 1) Did we lose the function of D3 or can I use it as a general I/O pin? 2) In version 6, I cannot see in the component all the pin assignments in the component,...

Ok I came total right.
I used the following to reinitialize the usb,
asm
{
goto 0X0F00
}

Thanks for all the help

Right, I found the cause why my program does not run when the bootloader is installed. If I remove the watchdog start command “wdtcon = 0x01;" it works perfectly except for the fact that I don't have my watchdog running. The way I use the watchdog is as follows Only once the software poles the card ...

Thank you for you help, Late last night I actually got it running, by using the standard bootloader by microchip. The problem with the standard bootloader is that it needs rb4 to be high when resetting the chip. This is not good, as I need to do the flash remotely. if I go to be present on site , th...

yes it is a 20 MHz crystal
made both changes you suggested.
unfortunately the same result.
as soon as I add the component call macro, it fails.
it appears that the system does not go out of bootloader mode.

Ok I have done the following. 1) Created a simple prog to flash an led. No usb comms nothing 2) Loaded it into the chip and tested – all ok 3) Loaded bootloader. 4) Microchip prog sees the device. 5) I then prog the simple hex file in . 6) Reset the chip. 7) No led flashing 8) Changed compiler to re...

I have a successful project using the 18f4550 and I would now like to add a boot loader , so I can flash the 18f4550 from the usb. I have loaded a boot loader onto the pic, whereupon I can flash it with my prograhmn, only problem now is my prograhmn does not run. I only have a hex file boot loader. ...

Problem solved,
I only enable trm0 interrupt in the service macro instead of the main macro.
IE interrupt only starts functioning on the first scan from my basic software. I then flag that it has been enabled and further sans do not re-enable the trm0 interrupt

I have a project that if win 7 has loaded and I plug in the usb then all is fine.
however if the windows is starting up the usb crashed the system and gives me a blue screen.
it is a 18f4550

i reinstalled ver 6.0.7 ( using the repair option) without uninstalling 6.0.9,
it now works.
if I look at the installed version in help, about it still shows ver 6.0.9.0 installed

Sorry it does not work
I am using usb slave not serial.
if I reinstall 6.0.7 it works

tried that did not work,
I am using a 18f4550, in that download I did not see a 18f4550 file, however I did copy it into the directory,
to no avail

i had a prog working perfectly on 6.0.7 after upgrade I cannot receive or send data from my vb application via the usb slave Dim lRetVal As Long Dim bDataOut(0 To 25) As Byte Dim bDataIn(0 To 25) As Byte Dim nTxDataCnt As Long Dim nRxDataCnt As Long Dim sID(0 To 20) As Byte Dim dig0 Dim y As Long Di...

Am I correct in assuming that this function will continuous to run in background , irrespective of any other routines running.
in other words samples are taken all the time and averaged out, waiting for me to read them.
Thanks in advance.

I found the fault,
my file seems to be corrupted,
thank goodness for backups.
thanks.

i have a project that did compile to hex until I upgraded to ver 7, now I get the following message. Starting preprocessor: "C:\Program Files (x86)\Flowcode 6\compilers\pic\boostc\pp.exe" 400R1.c -i "C:\Program Files (x86)\Flowcode 6\compilers\pic\boostc\include" -d _PIC18F4550 -la -c2 -o 400R1.pp -...

Yes, that did it,
Thank you

I am having a problem in writing and reading from the eeprom, with 18f4550 chip I send a series of bytes to the chip via usb, if I write then into a variable, and then read them back all is fine, this indicates usb comms are ok s well as my Vb. however if I write them into the eeprom and read it bac...

Thanks for your help,

can someone help me to do the following. 1) convert a Ulong into a byte array. 2) convert a byte array to an Ulong. 3) convert a Ulong into a byte array in VB 4) convert a byte array to an Ulong in VB. on another Note, I am a NGO sponsor for the Dewildt Cheetah Farm IN bela bela South Africa. I also...