Let's Make Robots!



Fellow members,

Does any of you know of, or use a way to monitor the ADC values produced by a Picaxe analog input pin in real time?

As far as I know, the only two ways to monitor these values as they happen are: 1) with an LCD in the circuit or 2) on the programming PC via the download cable.

I was wondering f there was a cheap-o version, something you could breadboard easily and with discrete components... Ideas anyone? Or am I looking for the holy grail?

Thanks, all!



Picaxe questions

I started with an Arduinno because I read about it in Make Magazine (so very recently). I am considering trying Picaxe, because it seems as though the programming will be easier and I do not have a strong programming background (read: Basic in 1984).

Two quick questions:

Phase one: Line Follower complete. Right now it is "learning" how to avoid obstacles the contact-free version.
Using a
INTRO This project -christened Deacon- is the next step in evolution from Nigel, who was abandoned last year. June 9th, 2011 Read more
Uses 3,5mm jack to transfer signals on a rotating axis.
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Navigates a room worse than Mr. Magoo
Using a
 This is Robie, a "Start Here" robot my 7 year-old daughter (D1) and I built while away on vacation.  We used the LMR kit from Solarbotics, a cheap soldering … Read more
Helps newbies to learn how to program
   So far we’ve been talking theory, but now it is time to make things blink! You might have heard of “Hello World” term in programming. All that “Hello … Read more
This is my second Picaxe project . It is a simple servo tester or servo cycler built using an 08M . It has 3 modes of operation . In mode 1 each servo is controlled … Read more
navigates around looking to put something in a box.
Using a
Hi guys, i've been reading about all of your amazing robots for months now so I thought it must be time to post something of my own. So here it is "Norm"  I … Read more
 This is the robot I built to solve the Towers of Hanoi puzzle . It uses three rc servos and a Picaxe 08M . This is the first time I've used the picaxe  but I … Read more

Picaxe 40X2 servo control

Hey guys,


I have been working on a new project over the past couple of days and I have just come to the electronics stage of the project.  What I need is control of 18 servos.  For this I purchased a 40x2 chip as I saw how many I/O it had and seemed like the way to go.  Problem is that when I plugged in my Picaxe 40X2 and attempted to control a servo, The editor advsied me that only the "B" pins could be used with the servo commands.  This means that I can only control 8 servos with this chip?

Helps newbies to learn how to program
“Hey, Chapter numbers are in binary!” could you say. And, yes, they are! And they are bytes. And we can have maximum number of 255. Will we go so far? Who … Read more

Picaxe 08M with visual basic 6

Hi guys,

For the past few weeks I have been playing with Visual Basic 6 and attempting to get it talking to my picaxe 08M chip.  I have found a few tutorials online that are not exactly for this chip but I can follow and understand how they work (at least i think so).  My goal that I am trying to achieve is a simple off and on LED switch via VB6.  I have tried tweaking my code many times and going through various tutorials but I have had no success. Here is how i have been setting up.

Helps newbies to learn how to program
Let’s start with a basic understanding of what program actually is. Program is a set of instructions for microcontroller to follow. A particular program is … Read more
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Hi guys, For a while now I have wanted to buy a cheap toy car and make it RC. I was at the cheap shop the other day and found a few $2 toy cars. The cars were super … Read more

Getting into Arduino

   Well my friends, I think its time for me to enter the world of arduino.  After working on my last project (I will post it soon, its for the google science fair so I just have to finish up it's website.) I have deciced ill have a go at arduino.  The reason I came to this conclusion is I needed something that can do simple multi-tasking.  During my google science fair project (That I will post soon to LMR) I needed to do two things at once.  The first was very simple.  I just wanted it to go down and come back a little to the side of the first path down a

Prevents losing by forfeit. Forces action. Sets bar for family team.
Using a
EeGads! That's what crossed my mind when I submitted our team registry for Robogames. I know we're behind schedule, inexperienced, and hacking left and right, but … Read more

How to use HPWM for picaxe chips.

This information is based on the chip that is used for the 20x2(PIC18F14K22) To get a better understanding of the modes, I suggest referencing this datasheet for further information on the chips features. IMages and info are referenced from both the picaxe 2 manual and the PIC datasheet for the above mentioned chip.

HPWM, what is it?

Error-hardware not found?

Hey LMR,

this is probably some silly thing i missed but i kinda need the answer fairly quick so, uuhh...ya

I'm getting close to finishing my start here robot and i need to get the servo to centre position... (I'm using the usb cord and windows vista basic). I downloaded the picaxe programming editor and the drivers for the usb cord and the cord is showing up when i go to options> serial port>com 4. But when i plug in my picaxe 28x1 to the usb and press check firmware this shows up: 

Hardware not found on com 4:

Possible causes:

Serial RFID reader troubles

I recently purchased the seeedstudio serial RFID reader for 125khz tags, but I cant really understand the datasheet. I am having trouble figuring out how I am supposed to interface it with my picaxe. 

Here is the product:


And her is the datasheet:


Obstacle avoidance via Sharp IR
Using a
Update: I’ve had a nice breakthrough in the leg mechanisms for K’nexabeast.  The motion is now much stronger and closer to Jansen’s ideal curve.  Read more

Airship differential steering troubles

Hi all,

I'm faced with a problem - some friends and I are building a semi-autonomous airship (only a little one) and I've been given the electronics and programming to do, but I'm having trouble getting the pwm commands to work properly.

I'm using a little joystick with 2 pots to control it, the y-direction one controls the overall speed and direction of both motors and the x-direction one puts a left/right bias on them to turn the thing.

Here's the bit of test code I've got with just the one pot being used


symbol zero1 = b1

symbol zero2 = b2

Read GP2D02 into digital input on Picaxe 28x1

I just had a read through of your article "How to make your first robot" on LetsMakeRobots.com. This is a fantastic article, however, I've got one slight problem; I am working with a Sharp GP2D02 instead of GP2D12 and the code needed is somewhat different.

Battery Backup 12v

Hello, I wanted to add a battery backup to a Picaxe circuit so when the AC main fails the power will switch from the AC-DC transformer to a 12v battery which is then lowered to 4.5v to power the PICAXE board.

after some research I found this circuit which seems pretty simple and I wanted to know if you people think its good or will I have fried PICAXE for dinner.

Thanks in advance!  :D

Inverse Kinematics in VB

Hi everyone!

I'm trying to decide between 2 things before I get stuck into either, help!

Basically I want to try implementing some inverse kinematics on my custom humanoid, but it's running on a picaxe so I can't do it autonomously as the picaxe can't do floating point...

Picaxe Debug

Hello LMR,

I mean this posts for thos who know something about Picaxe:

I need help! Please someone go over the code and tell what did I do wrong so that when I make pin 4 = 1 nothing happens!

Did I miss anything, did I add something that is wrong?  Don´t worry about the spanish parts they are just labels.


AXE033 clock add-on

Hello LMR,

I was wondering recently if there was a way of using another clock that isnt ds1307 for the AXE033 lcd module from picaxe.

I wondered as I can´t find any and i´m not really up to ordering it, so please tell me: is there another ic or will i have to find one?

Thanks is advance!