Thank you Felip, I will try that!
Marc

Hi, I’ve been doing PIC based circuit designs for many years now, but I have never used ICSP. Now I designed and built a circuit and I would like to use ICSP to program the PIC without removing it from its socket. But there are some points that I’m not 100% confident and I would like some help just ...

Thanks paulfjujo, I will try that. For the moment, I examined my code and I incremented the duration_tic variable by a value of 6 before calling the ShowResults() function. This is to compensate for the time spent between the moment where the stimulus is detected ( while ( PORTA.F0 == 0 ); ) and the...

Hi, I developped a small program to measure the time it takes for a subject to respond to a stimulus. The stimulus (a short beep) is generated by a PC and at the same time a positive pulse (200 ms) is sent to a PIC18F4620 (RA0). The PIC then starts its timer until the subject press a button connecte...

Thank you Lana for the information, you confirm my my impressions. By the way, is the "Matrix RGB click" board from mE would give the same results? Is it easier to implement?

Thanks a lot!
Marc

Hi, I would like to build an 8x8 RGB led matrix that would be controlled by a PIC18. The intensity of each color of a RGB led would be controlled by PWM (8 bit resolution min.). I would like to find an IC (driver) that has 8 independant PWMs, so that a complete row of LEDs would be active simultaneo...

Hi Darko, Thank you but it won't be necessary because I solved the problem. After testing, the culprit appeared to be in this line: T1CON.T1OSCEN = 1;// bit 3 Timer1 Oscillator Enable Control: bit 1=on By setting T1OSCEN to 0, the PWM2 now works perfectly when Timer1 is in function. Even after study...

Hi folks, I built a device based on a PIC18F4620, where a LED is driven by the PWM1 controller of the PIC. The LED must be flashed according to a certain sequence. For this purpose, I use Timer1 to time the sequence. The intensity of the LED is set by the PWM1 duty cycle. Everything is running fine....

Hi folks, Ok, I solved the problem this morning: I just swaped wires on pins 2 and 3 of the DB9 and it worked. A stupid mistake, I know! :roll: Android: Yes, it works with OSCCON = 0b01110000. The 2 MSB are set to 0, which means that the Primary oscillator is used. In my configuration bits, FOSC3:FO...

Hi, Thank you both for your help, but your suggestions didn't work. paulfjujo: I tried all combinations of CR and LF, but none worked. In fact, with the mE Usart terminal, I don't need neither CR nor LF to work - the device ignores them. Sparky: Yes, I use 9600 bps in mE Usart terminal. Your hypothe...

Hi everybody, I'm trying to build a PIC based circuit to control a device (optical filter wheel) via a RS-232 connection. A description of the device can be found here: http://www.flicamera.com/pdf/HSFW_RevB_print.pdf . In short, if I want to select filter #1 I just send character "1", filter #1 cha...

Hi aCkO,

Thank you, it works fine now. I taught that RD4 (ECCP1) was used only when the enhanced PWM was used, and that the pwm1_ functions concerned CCP2. But I get it now.

Thanks again!
Marc

Hi, I built a circuit based on a PIC18F46K80. I chose that chip because it has 4 pwm. I removed from my source file all the spurious code, just to show you the problem. So I have an LCD connected to the pic, and 4 leds to the pwm outputs (which are on pins RC2, RC6, RC7 and RB5). The problem is that...

That's the strangest question I've seen here :| Ok, I make a guess here: you want to drive a light (maybe a led), so that it imitates a candle. I have seen it on some restaurant' tables. If that's your intention, you can modulate the intensity by a sinewave whos frequency would vary randomly between...

This could be a library problem, have you selected all the libraries you are using in library manager? It should not matter, only used libraries will occupy the ROM space, not all those "ticked" in the library manager. There seems to be a large code made by the user, without it there can be only sp...