picaxe programming

Community General Discussions
1

Does the picaxe programming circuit need to be in place while a picaxe is running? In other words, can I use a breadboard and picaxe breadboard adapter ( http://www.sparkfun.com/commerce/product_info.php?products_id=8331 ) to program it and then put the chip on a pcb separate from the breadboard?

2

Yes, you do not need the
Yes, you do not need the programming circuitry once it is programmed.

3

thanks!
thanks!

4

well maybe i should refine
well maybe i should refine that reply. You still need the resistors but not the socket.http://www.rev-ed.co.uk/docs/picaxe_manual1.pdf

5

which page of that should I
which page of that should I refer to? it’s a pretty big pdf.

6

You do need to make sure
You do need to make sure that you have the serin pin grounded. If not you could have some very strange behavoir.

7

grounded just means to the
grounded just means to the negative terminal on the battery, correct?

8

Better word is "pulled
Better word is “pulled down”, not straight to negative, but through a resistor 22K or 10K. As well if your chip has a reset pin, it has to be “pulled up” connected to positive terminal through 4K7 resistor.

9

Starting page 25 of Picaxe
Starting page 25 of Picaxe manual 1, you can find a minimal operating circuit for your chip.

10

You are correct, this would

You are correct, this would be a pull down and not direct to ground.

The circuits I have built use a 100k resistor to ground. This works fine with the picaxe breadboard adapter if you have one of those.

11

so on the minimum circuit,

so on the minimum circuit, the serial in goes through a 22k resistor and splits off into the download port (a mystery box with 1,2,3 on it… I’m assuming that’s what that is?) and a 10k resistor, paralell to each other, which both go to the ground. Can I just ignore the download port and put those resistors on it? The serial out also goes through the download port/mystery box and then directly to the ground, so I’m guessing that needs no resistors? or, if I’m using the serial out as output zero, I guess it would be connected to the load, but either way it needs a way out, correct?

thanks for your guys’ help, by the way, I’m completely new to this.

 

12

Yep, the box on the

Yep, the box on the lower-left is just the socket for the programming cable. If you’re not programming the PICAXE ‘in circuit’ you can combine the 10kΩ and 22kΩ resistors into a single resistor for convenience.
Serial out doesn’t have to be connected to anything if you’re not using it.

13

okay, I think I understand.
okay, I think I understand. thanks!

14

another question on

edited. never mind.