Let's Make Robots!

pir sensor


 I have this sensor from a security alarm... i have open it and get the little pir sensor (2030B).

 I have readed the pdf about it and i know what are the connectors in it

 Question... the pir sensor will work stand alone? i have connected the sensor to arduino 2009 and use some code that shows the sensor response...but i think that is not working because even disconnectiong the sensor the values are the same.

What is needed to the sensor to work? can i make it with my breadboard?






Virtual Keyboard (Reads ASCII data from COM port)

Here is a program that reads Serial data, ASCII, and turns that into keyboard strokes. Works with the Serial.print command in the Arduino IDE. (Not sure how it works for Picaxe!)


About halfway down.. kind of hard to see the download link.

My parts are on there way!!!!!

So i just sent for my first robot parts and cant wait for them to arrive. i have the following on the way:

Picaxe 28 starter kit

picaxe 28x1 chip

motor driver

330 ohm resister array

tamiya dual gearbox motors

8 micro servos(Yeah i like servos, just wondering what to do with em :P)

catapiller tracks and pulleys ( from rapid im not sure what there liek so i can report back on them if anywbodys wondering=

2 120:1 motor things (like in the start here bot but i got em for £1.20 :) )

3 project boxes because they were on offer :P

Voltage Regulator

when i use the lm7805 oddbot's voltage regulator...the motor runs slow and the servo jitters...i test my voltage regulator it says 5.02V .85A...i used a 9v battery...how come its slower when i add V2??and cant run other programs that i coded


BX24 cost 50$ and  it features RTOS

I like it

Arduino vs. Picaxe syntax

The idea of this thread is to provide a place for asking question about the SYNTAX of the Arduino and Picaxe languages. I invite everybody to do the same and I'll be happy to help with Arduino syntax. Perhaps we can create a basic "dictionary" between the two and hopefully this will help the users of the respective platforms to SHARE code.

Perhaps we're not so different after all :)


Here is something to get us started:


Just bought my first Arduino

Senior year (undergrad) Computer Engineering major here with way too little real world electronics experience.  I'm taking a microcontroller class where we're programming PIC chips in Assembly and I've always secretly wanted to be able to build robots, but was always intimidated by the idea of learning uControllers.

After finding this website and doing a little programming in class I got motivated to buy a setup and learn how to do this stuff.  Woo!

Where are the attachments???

Here is my question for the Admins: Where are the attachments on my robot page? Why are they only visible when you log in?

What Could be wrong?

i have this problem a while ago wherein i cant program the picaxe 28x1..

when i plug in the battery(4.3v) the servo jerks alittle bit  so that was an indication that the battery is workin...


but i cant program it...


i tried to put 5volts the servo doesnt jerk and still i cant program it...


i tested the programming cable its fine....



but after 8-10minutes... it suddenly works! what could have been the problem?


hope that doesnt happen again..