Let's Make Robots!

Ubotino vs Picaxe 28x1 vs Propeller

I want to know the most vital pro's and cons of each of them please, ssso that I can choose one of them to make my robot. :D

Thank you for your reply! :)

Microbot777

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ive used BS2's( parallax basic stamp 2) for a number of years moved on to the  Arduino ,started early this year and the picaxe just this month for smaller gizmos ect, im unlikely to go back to BS2's to expensive, ill will stick to Arduino and picaxe both have there place

bs2 good

  • every pin is the same and can do every function
  • basic language  

bs2 not so good

  • no ADC,
  • no hardware pmw
  • no hardware serial
  • expensive  $$

arduino (uno)good

  • 6 ADC
  • hardware PWM
  • hardware serial
  • cheap

arduino not so good

  • not every pin dose every function

picaxe 08m2 good/ bad

  • same as bs2 for the most part but 1/10 $
  • not every pin dose every function  

i would go with an Arduino for building robots and a prototyping shield for it, to put your electronics on, doing this way you will learn a grate deal about the chips your using and how they work   ie l293d motor driver chip

for you first robot you need to learn a lot and making your own robot controller will give you a grater under standing of the robots and there workings . but if your likely to get board and discouraged  go with pre-made bot kit      

thanks for your reply! i have chosen to go arduino. :D

I was using Parallax's BasicStamp and didn't find it too hard to switch from basic to the Arduino language so don't let that scare you away from it. I personally like Ro-bot-x's Robot Builder's R-duino better unless size is an issue for you. It does everything the uBotino does but is also compatible with arduino shields as well. I have never used Picaxe but have seen a lot cool projects built with them here and on other sites so I'm sure it's a fine option if you want to stick with basic programming.

so will it be easier for me to start with a r-duino, also i want something flexible but thats some great information you gave me, so thank you. :)

Just so you know, a new R-duino board is fabricated at the moment and will arrive in my hands in about 3 weeks. It has manly the same features as the original, plus a few improvements. I'll talk about it when it's here.

On the other hand, if servos are what you need most in your robot, an Arduino or compatible board can contro max 12 servos. Arduino Mega or compatible (that can be compared with the larger Picaxe and Propeller - actually you can't even compare Prop with anything) can control 4 times more servos, as it has 4 16 bit timers. Look at OddBot's Red Back Spider controller. I made a µServotino controller, but the new version is not finished yet, I still have a non functioning electrical power switch for the servos. I should simplify and replace it with a second mechanical switch and be done with it.

with the rduino board, can it control motors??

because the picaxe can

Yes, it can. 

2 motors, 6 servos, 6 sensors.

wow, thats practically better than most of the microcontrollers! :D

You are wanting to compare 2 chips that have 40 pins to a chip that only has 28.

They should all be able to handle 8 servos. The Prop is more flexible and therefore can probably almost manage 30+ servos. The uBotduino should be able to control more servos than the 5 that the board is laid out to support. The PICAXE should be able to manage 8 servos and maybe even 16, depending on how the chip and software is laid out. And, by software, I mean the actual interpreter.

so what do you think is best for starters?