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Recent Forum Posts

MIBAM question

Hi guys,

I have been playing with MIBAM from Darrel Taylor and it works perfectly.
However, i was trying to get the cyclon effect at one point and a full fade-in or fade-out of all the same LEDs...
PaulMaker Yesterday, 19:03

Re: Pull down button on Port B

Solved: Microchip Applacation note AN552
"The series 100Ω resistors are used for Electrostatic Discharge (ESD) protection."

OK, I think I was on the right track. In fact I was considering 100Ω...
MOUNTAIN747 - 18th January 2026, 18:31

Re: Pull down button on Port B

thanks Richard for the reply. My point is to limit the current surge when the PortB pin drops from 5v to 0v at the button push. My thinking is there is a spike of current that may damage the PortB...
MOUNTAIN747 - 18th January 2026, 17:59

Re: Pull down button on Port B

if your query is to do with ameliorating effect of debounce capacitor

google ai says
richard - 18th January 2026, 01:07

Pull down button on Port B

Using weak pullups on port B of 16f1936. A button to ground will cause an interrupt on IOCBN.
Question: should I use a low value resistor in line with this pull down button?

Wayne
MOUNTAIN747 - 17th January 2026, 20:28

Re: Error compiling with DT Interrupts

Hi Richard,

thank you so much for your quick reply.

And once again you are 100% correct.
How could i be so blind?

Thanks. It now compiles correctly.
PaulMaker - 16th January 2026, 23:18

Re: Error compiling with DT Interrupts

INT_Handler USART_RX_INT, _RxISR, PBP, yes

dt ints does not have an interrupt called USART_RX_INT perhaps you mean RX_INT
richard - 16th January 2026, 22:22

Error compiling with DT Interrupts

Hi guys,

i'm a bit lost with a very small and simple program which does not compile when using DT interrupt library on the 18F2580.

I was hopping someone more inteligent could help figure out...
PaulMaker - 16th January 2026, 21:48

PIC® 18Xxxx 80pin TQFP Adapter

From £79.95
Buy it Now

For part numbers ending with suffix: /PT Compatible with the following microcontrollers:

PIC18C801, 18C858, 18F8310, 18F8390, 18F8410, 18F8490, 18F8520, 18F8525, 18F8585, 18F8620, 18F8621, 18F8627, 18F8680, 18F8720, 18F8722

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