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and unless you want to waste your time debugin it... maybe it's just some blown pcb tracks...
A in-line fuse could be used as well, but i stick with the external PSU.
To do this one i used Mikroelektronika a EasyPic 4 board.
Nice board, but the on-board programmer fail sometime with 18Fs device.
Last edited by mister_e; - 11th January 2007 at 19:38.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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Bravo, Bravo, Bravo!!!
Steve that EasyPic 4 board looks fantastic! I see that it has an add on PLCC programming kit but in your experience can it program the PIC18F4550??
Has anyone made a test PCB for this yet and willing to post on site?
Cheers
Squib.
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The on-board programmer work with most PIC. The 18F4550 also work... but sometime it fail to program at the first time, you just need to reprogram it once again... no big deal but sometimes annoying.
I don't have the PLCC board, but it should work... it's just an adapter, so i don't see why it shouldn't work... unless the programming pins are not at their usual places...
Last edited by mister_e; - 12th January 2007 at 03:11.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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I made an adapter for an '8722 awhile back that puts it in a 40pin 18F socket using a 40 wire ribbon cable on an IDC socket (think '452 with a load more memory), and another 40pin dual row to get to the rest of the pins. Do you think that would work in this? It worked in my mp3 player.Originally Posted by mister_e
The on-board programmer work with most PIC. The 18F4550 also work... but sometime it fail to program at the first time, you just need to reprogram it once again... no big deal but sometimes annoying.
I don't have the PLCC board, but it should work... it's just an adapter, so i don't see why it shouldn't work... unless the programming pins are not at their usual places...
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In theory... all 40 pins device have the programming pins at the same place or the EasyPic 4 would have a second 40 pins dip socket.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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Here's a small contribution from my end to support the good work.
Thank you steve for the help
regards.
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And I would think that a similar dev board for a '4550 would be practically the same except for the obvious pin differences...
I hope so...'cause that's what I'm building...still waiting on the '4550's though...
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I am looking for this trough hole plcc socket, could anyone help which type , or digikey/mouser part number
Thanks
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Thanks Darrel, but I need the PLCC socket only, not the whole adapter, what make/ type is it ?
It is smaller than normal PLCC44 socket
Johan
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Hi Squibcakes,
I have an older model 'EasyPic3' and i have no problem to program PIC18F4550. It is a great board and I ma glad owning one.
Cheers
Ozion
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<img src="http://www.pbpgroup.com/files/zombie2.gif" align=middle> Heaven you think?
Goood..., then you won't notice when I come to collect your PBP soul.
<div style="background-color:#000000"; layer-background-color:#000000;></div>
DT
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Many thanks!!! Got it working, now I'll proceed to port it for my purposes.
I've change the 2 lines and one thing more
__CONFIG _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC3_PLL4_1L & _USBDIV_2_1L
__CONFIG _CONFIG1H, _FOSC_HSPLL_HS_1H & _FCMEM_OFF_1H & _IESO_OFF_1H
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Curious,
That means the CPU is running at 24mhz.
Why not run at 48mhz, since it's available.
_CPUDIV_OSC1_PLL2_1L
<br>
DT
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because windows don"t detect the hardware at 48MHz
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