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i am using an 18F4550 for several very similar applications. I ran into the same problem that you were having. Here was my problem and solution.

Problem: An external trigger (interrupt) would tell ...

Hello,
I am using this exact LCD in a device that is going to production in the next few weeks. I will be happy to help as much as I can. Yes, you can attach the touch screen directly to the PIC. Thi ...

Hello all,
No one ever replied to this post. i am actually in the same boat as this. I have created an HID device and have the possibility of having multiple of these devices connected to one compute ...

Here at my new place of work, I use LabView for all PC programming to communicate with the PIC. It is a quick and easy way to create controls and GUIs without needed knowledge of a programming languag ...

Hello,
To me this is an interesting problem. I am developing an HID device with the same chip and am making my own application using LabView for the GUI. I have yet to try the system on other compute ...

Problem Solved. I had only defined the variable out_data as follows:
char out_data[];

when I should have defined it as (for example):

char out_data[40];

I can now accurately ...

Hello all,
I am a developing a USB HID system using a 18F4550. I have developed a LabView application that communicates with this device with no problems. A new requirement came along that has requir ...

For my application, I am just turning a high current solenoid valve on and off. We control the current by varying the duty cycle but it would be the same if you are controlling a motor with PWM. I am ...

i am not sure how you would do this using the 16f877. Look into using the build in pwm feature. i am using this feature in another chip but am not trying to adjust phase. You might want to look at usi ...

I am interested in doing some hobby projects using advanced control systems. Has anyone had any luck designing control systems using neural networks or fuzzy logic on PICs? I have done this purely in ...

Thank you for your help and info. It gives me a good starting place.

Hello all,
I have found discussions about this but no luck with code. I am implementing a 128x64 KS0108 glcd with a 4-wire resistive touch screen. I would like to control this directly from the PIC w ...

Here is a function I have created to put into the glcd.c file when using it with a 128x64 KS0108 glcd. The program reads from program memory where I had to store my image (i.e. #ROM 0x1000 = image in ...

Thanks Octal. If it doesn't work out, no big deal. I spent some time the other day developing my own character set for numbers 0-9 that are 29Wx47H. I should be testing them and developing code this w ...

I almost forgot...I used the glcd.c driver and added this code to it. You will need to check your chip select signals for your glcd. My chip selects are low active so I needed to modify glcd.c to give ...