Matrix user forums

Hi viktor_au, I have looked for a H-bridge for the motor driver. But on the time that I must make a PCB for this frame I kept to stay on the old PCB because this was working for more than ten years. The updated version will be with a H-bridge. Thanks for your information and your nice webpage. ! I h...

For the LEM. Is a good idea to start with this topic?
https://matrixtsl.com/mmforums/viewtopi ... =29&t=9939

Today I’m going to work further about this project. First of all I must solve the following problem but I don’t know how to work around the Limit Switches. If Limit_Switch_UP is pressed , I can’t get the frame Down because the Relays are switched Off. The same is for the other way. How do I get this...

Hi viktor_au, Many thanks again for this information. I will take a look to it after this weekend.

Thanks, I will take a look to this.

Or here

EDIT: AbhijitR allready had answered this.

I have made a flowchart for an engine control. Till now everything works fine in hardware but I also know this flowchart can be better made. For me is programming the flowchart always a difficult thing to do :-) This project is a safety road sign board. See attached picture. The original PCB was bur...

Hi Martin,

I can only say WOW !! and thanks for this great explanation. I could in no way find this solution.

I will try this tomorrow morning and let you know.

(the one flasher test I use every time with a scoop for a new chip)

Hi, I have a problem with running my PIC16F18346 on 8Mhz. I get this error: PIC16F18346 - OSCCON - 01.c: main() 322: OSCCON = 0x70; ^ (192) undefined identifier "OSCCON" (908) exit status = 1 (908) exit status = 1 I don’t understand why. I use only the internal oscillator. I have tried the three opt...

Hi Martin, I have read this topic because it is interesting for me. I have 8 switches in a remote control box and a cable with 3 wires. 5V, GND and a “signal” wire. This cable is some 7 meters long. The cable is in the open air. (outside) The cable has 3 x 1.5mm wires. Wil this solution work with th...

Hi Martin,

Absolutely great work! It is working now as it should be.

Many thanks for your solution.

Ok, this looks beter

The flash is also better but still has some errors.

See this movie:

https://youtu.be/M4aWtjW6UZU

Thanks.

Martin, Thanks for the explanation. You have set the timer to 100Hz, that is the slowest what is possible if I understand it very well. Also in the excel sheet I don’t see any lower value than 100Hz with a Prescaler Rate of 16. I ask this because the whole programs runs now in some three seconds. So...

Hi Martin,

I have changed the chip into a PIC12F1840.

The program was running very slow, so I decide to add an OSCCON value in the flowcode.

OSCCON=0x70 is going too fast.
OSCCON=0x60 is going too slow. (One minute is two minutes)

What can I chance more ?

Hi Martin, Thanks. I think there is no space any more in this PIC12629. using updated 32-bit floating-point libraries; improved accuracy might increase code size led test 2.c: 498: (1360) no space for auto/param main@FCL_T_CHANGE (908) exit status = 1 (908) exit status = 1 Error returned from [xc8.e...

Hi Martin,

Thanks. But it seems that the modification didn’t help. See video:
https://youtu.be/wnuEeJsAlrU

Frank

Hi Martin,

I have make the change in the timer interrupt. It looks much more better now.
( I use the PIC12F629)

Only the flashing LED is “out of control” See video on YouTube

https://youtu.be/TgyXV9eJYTw

I will try every sugestion tomorrow. Thanks !!

Hi Martin,

I have tested your flowchart in hardware but what I see is this:
LED1 turns on and stays on. It never goes to the next step for LED2.

Hi Martin,

I really appreciate your help. Today I had time to work with this but then I get a phone call for a job. So maybe tomorrow morning I have time.

I’m sorry for this.

Hi Martin,

Yesterday the forum had a problem to access it.

Yes if you would me than I really appreciate that.

I’m trying to make a simple program to let flash some LEDs. I have LED flasher with four channels and must do the following: (all channels must start at the same time – power on) CH 1: On 1 min - Off 3 min CH 2: Off 1 min - On 1 min - Off 2 min CH 3: Off 2 min - On 1 min flashing and 90 fpm - Off 1 ...

I have replaced the 12F675 for the 12F1840. I was struggling with the speed of this chip. I have made the simply one second flash to test this. I change some settings and finally it works. This chip will be used for a LED flashing program in the original chart. I just wonder if these settings are co...

Thanks all for your help. I have decided to switch from PIC12F675 to a PIC12F1840 in this case for more memory. If I compare the PIC12F1840 with the PIC16F18313 (Microchip recommends for the 12F675) Than the PIC12F1840 looks more better to use. The PIC12F675 was running at 4MHz to safe battery power...