I took a look at your board and one suggestion comes to mind - consider relocating the SX-Key port to an edge of the board.
My first SX board had the SX-Key set up somewhat similar to yours and the SX-Key had to stand on end. It really wants to lie flat. So it is better to position it somewhere near an edge and to install a 90* 4 pin header. You will cut down the risk of damage to the SX-Key and the board.
Another alternative is to set up a flexible cable from the SX-Key to the board if you just can't or don't want to change it.
SX-Key had to stand on end. It really wants to lie flat. So it is better to position it somewhere near an edge and to install a 90* 4 pin header. You will cut down the risk of damage to the SX-Key and the board.
Thanks for the reply and the suggestion Loopy,
I can turn the header 90* and move the reset, and add a 90* 4 pin header, (Good idea!).
I've changed the board 3 or 4 times now, and I guess I'll change it one or two moor.
Why are there all those funny angled tracks? They should be mitred right angles.
Hi Leon,
1: I didn't draw a schematic before designing the PC board BIG MISTAKE!
2: Some start points are not at right angles with end points.
3: I read that tracks should be at the les of a angle as possible, two 45s is better than one 90, so on.
4: I thought it look nice.
5: I'm new at this.
I started out in Eagle with my first board not having a schematic. It was certainly the easiest way to get started.
But if you do the schematic it serves two purposes - [1] a better build and [2] you can post it on the Forum if you have any trouble.
Of course there is a third fact.....
[3] You don't have to start from scratch every time you design. You can rename the file and revise the schematic to generate a different board.
SXlee
Posts: 47
Comments
Resonators and crystals can remain in while programming. TTL oscillators must be removed.
Thank you for the reply's
It's my understanding, that it's necessary to remove the resonator only for debugging.
SXlee
My first SX board had the SX-Key set up somewhat similar to yours and the SX-Key had to stand on end. It really wants to lie flat. So it is better to position it somewhere near an edge and to install a 90* 4 pin header. You will cut down the risk of damage to the SX-Key and the board.
Another alternative is to set up a flexible cable from the SX-Key to the board if you just can't or don't want to change it.
Thanks for the reply and the suggestion Loopy,
I can turn the header 90* and move the reset, and add a 90* 4 pin header, (Good idea!).
I've changed the board 3 or 4 times now, and I guess I'll change it one or two moor.
Would you please look at my schematic.
SXlee
Hi Leon,
1: I didn't draw a schematic before designing the PC board BIG MISTAKE!
2: Some start points are not at right angles with end points.
3: I read that tracks should be at the les of a angle as possible, two 45s is better than one 90, so on.
4: I thought it look nice.
5: I'm new at this.
Hmm
that's the best I can come up with, sorry!.
SXlee
But if you do the schematic it serves two purposes - [1] a better build and [2] you can post it on the Forum if you have any trouble.
Of course there is a third fact.....
[3] You don't have to start from scratch every time you design. You can rename the file and revise the schematic to generate a different board.
Y?
Loopy
I made a schematic in ExpressSCH and post it on the Forum here.
With the PCB and SX28, is it OK to run the Vss track under the SX (Vss pin 14 to Vss pin 1)