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Recent Forum Posts

Re: serial LCD 1602 Backpack using PIC16F690 for Hitach HD44780

one last update:

added an PGM Sw on RA3

to edit the baud rate:

turn off the LCD display, press & hold the PGM sw, turn on the LCD
line 1 will show "Press to Select" , line 2 : "Baud Rate:"...
jackberg1 Yesterday, 17:11

Re: 16F690 MCLR as Input

many thanks Henrik to clarify this post.

that make more sense to me now with further test, when the pin RA3
has nothing connected to it, the input is floating thus
when adding a pulldown it's...
jackberg1 - 27th October 2025, 20:42

Re: 16F690 MCLR as Input

Because when you configure RA3 to act as a normal input the MCLR signal is disconnected from the pin and instead connected to Vdd internally. In other words, it's not the PIN that's connected to Vdd...
HenrikOlsson - 27th October 2025, 19:25

16F690 MCLR as Input

Hello everyone,

a very basic question,

I have a 16F690 with the RA3 MCLR configured as input, and the RA3 pin

is connected to a 4k7 resistor pulldown and a switch tied to the VDD and it's...
jackberg1 - 27th October 2025, 15:36

Melanie
Sorting Numbers

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Melanie

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Published on - 2nd July 2010 17:35 Number of Views: 11216

In professional embedded applications, when you take an ADC reading, good practice states that you take more than one and ...

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Easy LCD Contrast

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Melanie

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Published on - 1st June 2010 06:02 Number of Views: 11134

Here's a useful and very simple way of controlling the contrast on an LCD with just two Resistors and a line of code. If ...

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Olympic Timer

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Melanie

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Published on - 31st May 2010 18:38 Number of Views: 10405

It's almost Olympics time... so here's a topical program using PBP exclusively (no embedded Assembler) to give you a Stop-Watch ...

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Presetting Configuration Fuses (PIC Defines) into your Program

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Melanie

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Published on - 20th May 2010 17:27 Number of Views: 13473

1. What are the Configuration Fuses?
2. How can I preset them in my Program?
2.a. When using MeLabs default ...

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Bits, Bytes Words and Arrays

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Melanie

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Published on - 23rd April 2010 20:39 Number of Views: 11484

1. How can I reference a BIT in a BYTE?
2. How can I reference a BIT in a WORD?
3. How can I reference a BIT in a BYTE ARRAY?
4. How can I reference a BIT in a WORD ARRAY?
5. How can I reference a BYTE in a WORD ARRAY?
...

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I’m Running Out of CodeSpace, What Can I Do?

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Melanie

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Published on - 23rd April 2010 20:28 Number of Views: 14994

I’m Running Out of CodeSpace, What can I do?
My progam is too slow - What can I do?

Apart from the obvious and move to a faster PIC with more program memory, there’s a few little known tricks you can try.
...

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