serial LED displays

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serial LED displays

Postby takao21203 » Tue Mar 12, 2013 6:17 am

It has been a while since I last visited. But I have not abandoned the forum.

I have now improved the firmware for my serial LED displays. All XC8 now.
They are pretty easy to use.

There is a webpage containing pictures, and source codes as well.
It is even available for sale, starting at $3.98

http://pic.hitechworld.org/serial_led.html

Based on 16f54 controller.

Also I have now ordered a PCB for larger 2x 16f59 board. It can control 2x 3-digit LCDs.

Prototype PCB see attach. It is a big effort each time to wire up these displays, and to program the decoding.
When I have the PCBs in a few weeks, all I need is 3 wires.
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P2030020.jpg
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Re: serial LED displays

Postby Brian Griffin » Tue Mar 12, 2013 11:27 am

Thanks for sharing the project. Some PIC16Fs have LCD drivers, so that you won't have to deal with the software multiplexing.

Plus, where did you purchase those LCD displays? I can't find it here, or they are extremely expensive at limited quantities from Element14. :D
PIC - UIC00B from Cytron (replacement for my broken PICKit 2), Pickit 3, MikroC for PIC
dsPIC - MikroC for dsPIC, mikromedia board (dsPIC33)
AVR - AVR Dragon
Parallax - Prop tool
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Re: serial LED displays

Postby ober » Tue Mar 12, 2013 2:09 pm

Nice work!
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Cytron Technologies Sdn Bhd
www.cytron.com.my
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Re: serial LED displays

Postby robosang » Tue Mar 12, 2013 2:14 pm

superb! Thanks for sharing......
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Re: serial LED displays

Postby takao21203 » Tue Mar 12, 2013 5:19 pm

Brian Griffin WROTE:Thanks for sharing the project. Some PIC16Fs have LCD drivers, so that you won't have to deal with the software multiplexing.

Plus, where did you purchase those LCD displays? I can't find it here, or they are extremely expensive at limited quantities from Element14. :D


It was difficult in assembler, but in C, the work of an hour.

The PICs which have LCD drivers are more expensive. Also the display has 24 pins already.

The displays costs about $2 from Element 14.

Also the PIC16f59 board can be used for many types of displays, LED matrix.

It is just to save me from the work to wire it again and again, and to write the decoding tables as well.
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