Matrix user forums

Thanks Benj, will have a go and check it out.

Thanks for all the help.........John

Thanks steve001.Always useful to have these guys in your favourites.....John

Thanks Benj, any chance of providing a small example as to how you use the interupts please.

Thannks again........John

Thanks benj, appreciate the info.

Can I use any bipolar stepper motor up to 12V?

Thanks......John

I'm hoping somebody can advise me as to what equipment I should buy to experiement with a stepper motor. I'm under the impresion I should get a BIPOLAR stepper motor with a driver board. They look relatively cheap on EBAY so I would like to have a bash at it. Its nothing serious at the moment. Any s...

Hi Martin, thanks for that. Is the purpose of using the suggested resistor to make sure that when the pin is LOW, there is no voltage on it whatsoever? I did measure about 0.5V on the pin when the switch was in the OFF position. So if I have say an OUTPUT PIN that also sits with some voltage on it w...

I'm hoping somebody will be able to point out where I have gone wrong. All I am trying to achieve is when SW1 makes PIN 5 go HIGH, the program runs and the two led's flash twice together. I'm using a 16F688 PIC. Is it possibly something to do with shorting Vdd and PIN 5 together is not working? If i...

Hi Martin, thanks a lot for that. I'll check it out. Have emailed MICROCHIP for a definitive answer, see what happens.

Thanks again....John

Hi ben, tahnks for the help. When using the device manual select facility in the PICKIT2 software I see the 16F1825 is not listed. I have however seen on other websites that they are compatable for ICSP? I suppose the best will be to ask Microchip directly. I dont know if you managed to look at the ...

Hello everyone, I'm hoping somebody can help me out with ICSP of a 16F1825 with PICKIT2 The simulation works fine, it compiles to C and HEX ok. When I try to "burn" the program into the chip I keep getting an error 36, "unable to tranfer the program, cant find the device" message. From what I unders...

Hi Folks, would somebody be kind enough to have a look at the attached flowchart and see how I can improve the reaction times. I know Martin did another one for me by using interrupts but I have not a clue how and where they fit in or even how to do them. So, if somebody could be patient enough to e...

Thanks again Martin. Will have another go tomorrow and let you know the results.

Thanks a ton for your time on this...John

Hi Martin, just to let you know I deleted the old hex file and dragged your one into the folder. Then burnt the chip and it worked...well almost,I just got excited when I saw the LED flash twice with the buzzer. Man I'm turning into a flowcode addict. The only thing now is the LED after the first in...

Hi Martin, tried opening the hex file you sent and got a message saying access was denied. Tried opening other hex files and got the same message?? Here are my other settings Clock speed 4MHz Using INTERNAL NO RC CLOCK setting. PIN 5 is left open, nothing connected to it. I have attached my schemati...

Sorry,forgot to post the hex file.

I tried it out but GP5 still wont come on at the same time as GP2.

I also checked with the scope and there is no signal at GP5 at all. Also tried a new chip but that did not work either.

Any ideas will be appreciated, Thanks.............John

Thanks Martin, I'll give it go and see what happens.

Thanks a lot for your time John

Sorry, forgot to mention that in the simulation the masking seems to work.

Thanks again.....John

Hi Folks, for some reason I cannot get GP5 and GP2 to output at the same time when using the masking method. I can get them to output on their own. I've checked to see the bits can be used as inputs or outputs. Would appreciate it if somebody would take a look and point out where I have gone wrong. ...

Thanks Benj, will give it a bash tomorrow.

Appreciate the help.......John

Hope somebody can help me with this. With kind help from medelec35 I have constructed a program that will detect when light levels fall below a set threshold and a LED will turn on. I have made a few small changes and added some stuff myself. The simulation works 100% and am happy with it. However.....

Thanks a lot, that helps a lot.

I'll practise it tonight just to make sure.

Thanks very much again...................John

Sorry guys, here is the flowchart............ thanks again...John

I'm hoping somebody will help with the application of masking.

From my flowchart, I'm trying to switch on LED's connection to AN0 and AN1 at the same time but cannot get it to work.

Could somebody show me where I went wrong please. Thanks a lot....................John

Many thanks, will check it all out.

Take care.........John