Let's Make Robots!

Store Sound in EEPROM

I know EEPROM can hold letters, numbers, etc, but is it possible to add a sound to eeprom? I am guessing it could be digitized and stored that way and then dumped to a variable and played somehow, but has anyone done it? I have a 1-2 second sound I would like my robot to play when it runs into something or something unexpected happens. I know I can purchase a seperate speaker/microphone kit from tech-supplies, but I would like to keep it on the PICAXE if possible since it is such a small file.

Any ideas?

Batteries Series Parallel

A few questions to make sure I don't burn something up. I am playing around with different batteries and ways to make my bots last longer between charges. I want to ensure I have this right before I hook anything up.

First off lets assume I have 5 volts hooked up to a LED (max rated current of 30milliamps) using a 150 ohm resistor (5 volts divided by .03 amps = 166 resistor to keep LED from burning out).

Series: Lets say I take a 5 volt battery pack and hook it up in series making the total voltage 10 volts.

Sensor Ideas


 This came out of a toy that was a monkey with rubber arms. When you shot him like a slingshot he screamed louder than the sound of millions of people burning in errr umm Heck.

Need help with a Torque issue (suggest motors or another method)

I'm purposely being vague because this is my next robot and I believe this to be my last issue to work through. I have the circuit working on a breadboard and this is the last piece in the physical build.


Blue plastic "gear" 



Gear on motor pushing on red peg


Side view of gear on peg

When a button is pushed on an infrared remote it makes an LED blink
Infrared Sensor (LED020) from the PICAXE store was used.   Read more