Table not doing much

[brad]

bitfogav vs brad - a battle for the correct capacitors!

[bitfogav]

HaHa!. I sware I saw 22pf cap somewhere that was the recommended cap, but yeah I checked the 18F4550 datasheet and it recommends 15pf for a 20mhz crystal


I just looked at the RetroBall for the Pong table code and I think I see what you mean about your delays Brad? you are using the programme loop to decrease the delays.

Code: Select all

If DisplayIndividualScoreDelay(x) <> 0 Then
      Dec(DisplayIndividualScoreDelay(x))
Else
      DisplayIndividualScoreDelay(x) = 20
      DisplayIndividualScore(x) = false
EndIf
   
If DisplayScorePauseTimer <> 0 Then
      Dec(DisplayScorePauseTimer)
Else
      DisplayScorePauseTimer = 100
      DisplayScore = false
EndIf

[brad]

Yeah I could have / should have made the delay routines nicer to use but I'm afraid I am a little bit lazy when it comes to coding sometimes

[cnribbens]

Ok I made the board, but didn´t connect it yet! A small question about the schematic of bitfogav, why are there an `1´ and a ´2´ in the schematic?

[bitfogav]

Can you be abit more specific to what you mean by 1 and 2? I guess you mean Osc1 and Osc2? if this is the case then if you look at the datasheet for the 18F4550 its shows the pin connections as Osc1 and Osc2?. But I would add, that it dont make any difference if you connect Osc1 of the microcontroller to Osc2 of the Crystal circuit or vise versa.

This is a image from the datasheet - (ignore the resistor in the schematic as this is not needed)

18f4550data.jpg (18.75 KiB) Viewed 28663 times

[cnribbens]

I mean the 1 and 2 in yellow near the crystal and lines after caps.

[bitfogav]

Oh them, they are just symbols that are automatically inserted with the schematic software. sorry if they have caused any confusion.

hacky%20add%20on%20board.jpg (6.76 KiB) Viewed 28660 times

[cnribbens]

Ok good to know bitfogav!!!

[brad]

Also be mindful that ideally you want to keep the connection between the oscillator circuitry and the PIC pins as short as possible.

[cnribbens]

Ok, I made the wires really short and placed everything together and connected the add-on board to his big brother. And no weird stuff is going on. I can still play the game and no change ofcourse. The magic will happen with the new code

[brad]

Sorry for the delay with this. I spent all day today working on our new deck. I will get to it hopefully this year!

[cnribbens]

Yeah cool! not in a hurry, merry christmas and best wishes !!

[brad]

Merry Christmas right back at ya!

[cnribbens]

The table is still working so that's a good sign. Still some flickering without the code update, but it's still a cool end result!!!

[brad]

I do apologise for not having it done yet - obviously I didn't get it done by the end of last year...

Once all this PICnDuino stuff settles down I will have some spare time - it's crazy trying to organise orders for nearly 700 people! (especially when 150 of them fill out there orders incorrectly so they don't match the funds they send through...)