Let's Make Robots!

picaxe

navigate by ultrasound avoiding obsticals
Using a
this is my first robot and will probably take a while as i am only 15 and my gcse's are comming up but would like some input if the robot sounds good. i am using a … Read more

Yet another PWM Picaxe question

I am programming my Mr Basic with Mr Basic moron driver. I use a Picaxe 28x1. It is a very basic setup indeed, with a small servo carrying a sharp IR distance sensor.

After reading many pages of manuals and LMR and example code of other victims, I ran into a wall. It's the dreaded "PWM and servopos don't mix" wall on picaxes.

Super Capacitor in solar power supply - a few queries

I intend to build a remote 'weather station'

The station will:

  • Be completley independant of any external power, ie, it will produce its own power via solar cell(s)
  • Measure temperature only
  • Transmit its finding over an RF link to an indoors reciever

Instead of using a rechargeable battery supply with charger circuit, i have decided to use a 35F, 2.7V super capacitor to smooth and store power.

Navigates around via ultrasound without falling using LED and LDR, Follows lines.
Using a
This is my first homemade robot. It is inspired on the Start Here Robot and Amanda LDR. Changes: Read more
Lights up when it becomes dark and lets you get in bed without breaking your feet or furniture in the bedroom :D
This is my little LightBox, a night light. Basically what it does: When you switch off lights, it lights up for a minute for you to reach your bed without accidents … Read more
Has the potential to be a slave-master to any of my projects.
Using a
This remote represents my journey from knowing absolutley nothing about RF communications, to a little bit. Built from scratch, the remote runs off a PICAXE 28X2 … Read more

Looking for Feedback on PICaxe Platform Module

I've been working a PICaxe platform module.  I did a V1 a few months ago, and recently re-did it.  Here's a prototype of V2;

4442672232_7861745a51.jpg

I've used the same power stage as the Propeller Platform sD - it's 5v @ 1.5A and 3.3v @1.5A with an extremely low dropout of 100mV.  Standard power and programming jack, and it has power indicator lights.

I need to make a few changes, so I thought I'd get additional feedback.

Hi guys (and girls) I need some help here. I’m trying to make a beads sorter for my kids, but my funnel approach is not working. Read more

SolderJunkie Construction

2010.03.14

Hi, I have started work on project named SolderJunkie. I want it to be a motorized solder fume extractor. He is going to use a Picaxe 28x1 as his brain, DAGU IR compound eye, few servos and CPU cooler for parts. I only started construction of mechanics, so far. Here is his first pic:

SolderJunkie01.jpg

From Picaxe to Arduino

When I joined LMR I had just written my first picaxe program. After 16 months I have finally crossed over to Arduino. The biggest problem I found was that all the commands were not in one neat package like the picaxe manuals (Manual 2 in particular).

Obstacle avoider. Other behaviours planned.
Using a
Early March - GREAT PROGRESS - Giving it a brain, and a problem solved. I've built the brain-board with its 20x2, pluggged everything together and IT'S ALIVE! - … Read more
Simulates firefly synchronization
First off all, apologies for the lack of video. Read more
I had some RGB LEDs lying around and decided to make a night light for my kids. Read more
If you are running out of input/output pins of your Picaxe here's something that might help you: Picaxe's configurable input/output pins can be used in three … Read more

Can these displays be controlled by a Picaxe?


I found these 2 displays in an old cd/casete/radio combo and was wondering if they were worth keeping, 
and if they could be controlled using a Picaxe.
I know that a picaxe can control a display buy using a serial interface but these ones dont have that,
they have about 30 pins, not including the ones for the back lite. 
 
100_0580.jpg   

SF order on it's way[shipped!]

Since it's been a while since anyone has posted on this forum, just thought I'd post something.

Finally put my order in thats been in the cart on that fateful freeday. added a couple extra things to it as well since I have a mini project going.

Opted to get the polulu trex motor driver as well since my hbridge attempt has yet to work(though I haven't tried to trouble shoot it for a while) .

Got a couple of 20x2's to see what they are like and since they had some sweet hw access. Grabbed a couple of atmel 2313's since they have built in uarts.  

Going to build a YDM!

'Going to build a YDM'

Bit ambitious as a first project, but I have 'some' background in programing.

Right now I am a student at University of Idaho. I am taking C++ and attend the ACM meetings. ACM is a group on campus that does programing challenges and is now dabling in robotics. They recently got an Arduino board, and it is my understanding that it uses C++.

This will be my first robot, except for a semester in high school where I programed a robot to navigate a maze using only a sequence of commands.

Motor drivers?

Does anyone know of high current ( 2.5 Amps per motor) motor drivers which are compatible with Picaxe AND PWM? I need to drive 2 motors.

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.

Linefollower

Hello everyone. I'm trying to make a linefollower module, and I want to use it with a 28 pin project board (AXE020), but I've got some questions.  

  • If the module uses 5 of the input pins, one of voltage and one of ground, is it better to use a general voltage pin (the ones that are at the top of the input ones) or to use any voltage pin at the right of the used input pins?
  • If I need a voltage higher than V1 to power the module, can I take it from a V2 pin, or the signal sent by the module would be too high?

Thanks!

AXE 045 RGB sensor

HI,

 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?

 

Greetz,

MG2R

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 :)