Let's Make Robots!


let my robot be heard

Hi can anyone help on this....

I am trying to make some noises for my robot (in progress) via a picaxe 28x2 sound commands. I first bought a small piezo but it was way to quiet so i bought a bigger one, about 60mm D which i thought the sound would have been louder but it isn’t.

Drives around, bumps into things, plays beats, backs up and moves on.
Using a
Most Recent Update: Uploaded new code (v1.9) that introduces some 'shuffle' to Blind Lemon's beats. Thanks for the tip, Frits! Intro  Blind Lemon is now a … Read more

Slightly more advanced LDR eye

Read this history first, if you have an hour to kill.

The challenge: make your bot rove around your house. Use no active beacons. Use observations by your bot only. Now, does your bot know where it is?

One possible answer: an eye and a brain.

Room Recognition

Each room in the house has a unique lighting situation. A simple eye that looks around in eight directions would "see" a pattern of light and dark segments. Each cell is connected to one ADC on your uC.

AXE 045 RGB sensor


 Does anyone around here have any experience with the AXE045 RGB-sensor from Picaxe? I connected it to my Picaxe 28X1 microcontroller and I am only able to get readings from about max 40 for red and blue, green only gets to one or, if I shine directly into the lens with a flashlight, up to 9.

 Any help?




Motor Controller Board

Well I've almost had 3 weeks offline and got a ton of thinking done.  The physical design is basically the same, going to use a PicAxe 14M to control four DC motors with two L293Ds. The picaxe will be optically isolated from the arduino, so if the motors, an IC or a wire shorts out and decides it doesn't want to go alone that it doesn't have the arduino as an option as a buddy in IC heaven or hell.

Mac OS X and PICAXE USB Cable

I have tried to get the USB cable that came with the PICAXE 28X1 to work on my MBP (OS X), without any luck.  I have tried finding advice online, reviewed the manual to no avail...

I loaded the AXE027 driver (as suggested in the manual) and then I went to System Preferences > Network and attempted to connect but I get the following error:

Could not negotiate connection with PPP server.  Please verify your settings and try again.

A question about hooking up 2 LDRs to 1 picaxe input.

Hey everybody. I am a long time lurker on this site and I would like to thank you all for all the valuable information here. I have built a start here bot and a few more complex things of my own. Now I am trying to build a very small sized robot with a picaxe 08m.

I am a beginner in electronics. I know how to hook up a LDR and read the input, but I would like to know if there is a possibilty to hook up 2 to 1 input. The problem is I am short 1 input on my robot and all the other picaxe pins are in use. The 2 ldrs would be used as left and right eyes in a sense.

Inhabits my fridge's door.
Using a
Meet my robotic fridge magnet! :)     Once upon a time I was getting into my fridge for another bottle of beer, and after closing the door, my eyes stopped at … Read more
Roams around until it runs into something. Then it gets scared and tried to blend in.
Using a
I was hoping to finish this robot in time for the Mr Basic DAGU II competition, but I doubt I will have it done in the next 24 hours. Here is what I have so far! Read more

What microcontroller should i use?

Am planning on building a robot that  would have the abilitty to navigate , avoid obstacles and collect some items.

What chip should i use?

Whats the difference between pic and picAxE?


thanks in advance :) 

RC power for my picaxe

I'm using RC ESC's to drive the motors in my current robot project. These speed controllers has a built in power regulator (called a BEC) that is meant to power your RC receiver. I've measured and the voltage produced is a steady 5.03 Volts.

Can any of you think of a reason why I couldn't or shouldn't use this as power source for my Picaxe 28x1 ? 


Can't seem to insert hyperlinks with Opera browser on my old iMac, so here are a link if you wanna read more about RC ESCs or BECs


PICaxe Platform Module

I've been working on a design supporting 28 & 40 pin PICaxes.  The PICaxe board would support current and upcoming modules like the LCD I/O, motor controller, Internet / IP board, DMX, MIDI, etc.  The prototypes came out great:


Wanders around and grabs your stuff
Using a
Update 2011-10-06: Melty, melty Poor GRAB-E. His foolish creator left him in the garage for a few days after taking him home from a trip. The hot summer sun melted … Read more
is cute, warns me when i receive a new e-mail
Using a
As i'm waiting for the last missing parts for my "big" project, i play and make few experiments so i learn new stuff... those days i work on serial communication … Read more

robotic arm

(reposted as forum topic by an admin) 

can i use picaxe 28 into 1 to programme 6 hitec hs 311 servos.



(here's the applicable reply to original post)

The Boss Board is a project board from Gadget Gangster.  Not only is it a pretty cool project board, but you can also publish and sell projects using the 3.05" x … Read more

ldr test

I made a simple test project just to see how an ldr works... i used a servo to indicate the light level read from the ldr...

The video is a bit shaky, but i think it is good enough for its purposes :P 

problem with IR remote upgrade

i was trying to see if i could make sounds, LDR-test and ir remote test.

upgrade stuff here: http://www.rev-ed.co.uk/docs/axe040.pdf

but there is a syntax error :(



please help!

This machine is controlled by a PicAxe Microcontroller. A servo (used for steering in R/C cars) is used to tilt the track for a ball to roll round. The degree of … Read more
This is my attempt at making a robot arm from meccano (and meccano like knockoff toys) It probably would have been easier if it was all ordinary meccano, but I was … Read more

Servo Control with PICAXE-08 (NOT M)

One for TofuRobot.

 1.    The electronics:-


The Diamond on the left is the Picaxe pin, I normally use a resistor 100-200R just to protect the Micro just incase of short or plugging the servo in backwards (there are two types of people using servos, those who have plugged servos in backwards and those who are about too!).

Mini Robot Master

I wanted to create this blog about an Instructable memeber I've read about a while back.

Programming a Picaxe in Ubuntu

Well, a small comment in the shoutbox caused several guys to download Ubuntu. Good choice, I like it! Here's a walkthrough to programming a PICAXE in it.


STEP  1) Download the Linux Axepad here- http://www.rev-ed.co.uk/software/linaxepad_100.tar.gz

STEP 2)  Extract the files to a folder on your desktop called "LinAXEPad" or whatever you want to call it.

Picaxe LCD Direct Connection Problem

Hey There,

I've hit a snag on a project of mine. I've been trying to build a servo calibrator (to test a servo's limits and test them on robots before they're connected to the motherboard) which should operate by positioning a servo depending on the position of a potentiometer, and display the pulse rate on a 16x2 LCD. I've built one before, with an LED display and a single servo output, but this one should handle two servos.

Except it doesn't. I won't even handle one.  There's two major problems I've found which I'm looking for solutions to.

Declare an Array in picaxe basic?

I want to make several led's blink in one direction the the other, i figured the best way to do this would be to have the output pins in an array then use a 'for next loop' to loop thru them.

But the manual dosen't say how to declare an array, so how do you declare an array?

Using Picaxe 28x1


pick up, and move stuff
Using a
another small project i made.. thought i might aswell post it here too he got 6 DOF. enjoy the videos! :D Read more

Best for Beginners?

I am an absolute beginner... i have very little experience in electronics, very little experience in mechanics... but i am an expert programmer...  my question is: what do you recommend for a beginner wanting to get into robotics?  I am thinking I might want to get a roboduino board but I see here a lot of people are using picaxe. 

The advantages of something like the roboduino is that the board is pretty self contained and wouldn't need a seperate board to drive the servos...

Any suggestions as to what type of micro-controller might be best to start with?

New Axepad for Linux Ubuntu users

The creators of Linux Axepad have created a .deb package for Ubuntu users. I was having issues with the other version off of rev-eds site. So far no issues with this one. 


Once you have it installed you have to open a terminal and run "sudo linaxepad"

LED configuration for PICAXE 'Testing the System'

Hello everyone. Ground-zero beginner here. I've been a programmer for maaaaaaaaany moons, and I'm using robots as an excuse to learn about electronics. It's strange, yet fun to be a complete newbie again ;)

Some parts are on their way and I am spending my time deciphering the picaxe manual. One paragraph confused me and I think I finally figured it out, but I would like to have confirmation.

 It's in picaxe_manual1.pdf in the 'Testing The System' section when it describes the LED connection: