Let's Make Robots!

serial

not sure what a pull-down resistor is ...

let the noob questions continue:

is this a pull-down resistor?

pulldown-resistor.gif

And if so:

-Is it just to keep a pin "low"?

-would i use it on any out pins as well?

 

I2C vs Serial

I hereby submit another plea to the robot gods out there:

I've read a lot of very informative info on both i2c and serial communication as a way for one IC to control others. My question is: which will work better for my needs?

My plan is to make a robot that has a seperate IC for each aspect of its behavior (movement, communication, etc.). So which is faster? cheaper? fewer wires? easier to program? I'm sure both have pros and cons.

Okay, go.

Ways of communicating with a PC

A nice inspiration to control robots / communicate PC <-> Robot
Sometimes you want to be able to go at different speeds, usually to make serial connections. Here is a snap on / off way of setting it up
Update: Note that the newer Picaxe models can change a lot by commands like setfreq alone :)   This is only for dummies like myself using Picaxe 28Xx standard … Read more

hardware not found error

Hi,

I run the picaxe programming editor on windows XP in a virtual machine (parallels desktop) on my OS X laptop. The serial connection to the picaxe 28x1 works fine when I'm just communicating using hyperterm or when the picaxe sends debug info.

When I want to upload a program to the chip, it usually takes 4 or 5 tries to get it right. The larger the program, the more it fails to load.

So i decided to use the command line compiler for mac OS X. Now the uploads are very stable only a new problem appeared.

Allows you to input keyboard commands into your picaxe
Using a
So one thing that I have been wanting to do is connect a keyboard (PS/2) to the Picaxe. This is the first step to a whole slew of applications. Control Robots with … Read more

n/a
You buy a little thing, give it a wire with a serial string. And somewhere else you have a similar setup. And there you go; What you write to one, comes out of the … Read more