Let's Make Robots!

picaxe

Make servo/whatever controller out of Picaxe 28x1 and control it from Arduino over I2C
While working on my first Arduino project I found out that servo library is not compatible with software serial library which is very bad for my project. So, I … Read more

Altered 'Start Here Bot' Code

Im trying to run my start here bot that is has a tamiya twin gearbox and SRF05 instead of the IR sensor on it. All the components work, just not together. I wrote my code (most copied from frits) but my robot just goes forward and back, sometimes sideways about 2 centimetres. Can you post anything wrong in the code that may help to fix this problem

Dont keep your inputs floating!!!

I keep hearing and reading about the importance of making sure all the unused inputs are pulled low with a resistor. No reason is given other than "don't keep them floating because you'll get unpredictable results!"

If you take a look at the picaxe 28X board, you see that all the digital inputs are pulled low with a 10K resistor. I understand that this makes it easier to just connect a switch to the pins on the board without having to add an external resistor. The analog inputs are left floating, almost as if by design.

Navigates arround controlled by other computer
Using a
Hi, This is my newest project. It is basically formed by two 28x1that are serial controlled by a processing application, one for the motors and other for the two … Read more

Arms for Edward

After lots of thinking about what my next robot should look like, I couldn't resist the temptation of trying to improve Edward. I never really made a good program for him and everybody who sees him ask me to switch him on and let him run around. When they do, i shrug and tell them "the batteries are dead" or "I'm still working on the programming".

Picaxe Encoder wheel timing

I am using the code below to monitor 2 encoder wheels connected to (pin4 left motor QRD1114 & pin3 right motor QRD1114) on my latest 28x1 picaxe project . It works fine .

My question is :- how can i calculate how long the code takes to execute?

Picaxe :- Pwm motor controlling and servo scanning

I wish to connect 1 or more servos to a picaxe 28x1 .......with 2 motors controlled by pwm

So Far :-

I have managed to get two motors working with pwm control . (jumps on table in amazement - its my first picaxe enterprise)

I have used pins 12(pwm 1) and 13(pwm 2) for the motor control (with output 7,6,5,4 for direction ie via an Ld293 chip)

using  pwmout ....... pwmduty commands - works well.........

I just noticed that a servo and a SRF05 range finder's trigger might be able to share an output pin on Picaxe 28x1 (should work on other models too). It should be … Read more

Wireless Control

I found a remote control i want to use it to control my slightly altered start here robot. Do i have to change the code on the remote.If so can you post it??? Also what extra code do i have to put in my picaxe

thanks muchly...

sorry about the quality

PICAXE or Arduino For Starters

I am just starting out in the field of robotics, and I am looking for someplace to start.
I was wondering if anyone had anysuggestions on which hardware I should learn first.
My end goal is to be able to control my bots remotely via wireless of some kind.
I have listed two of the kits I am looking at getting below. One is the PICAXE starter kit from LMR and the other is a starter bundle for Arduino's from Solarbotics. Any suggestions would be welcome.

LMR Starter Kit
http://www.solarbotics.com/products/lmr-sh/

PicAxe 20X2 mainboard

This is the second board I received from sparkfun / batchPCB. The other one, a motor driver, is tested and done.

08M motordriver and power supply board

 

After a few weeks of waiting, my PCBs have arrived. I just soldered the components on the first one and it works like a charm. I had to drill out the holes for the resistors a bit and then solder the resistors on both sides of the board to get a good connection, but hey: this was also my first shot at having a PCB made and it works. Next time I'll be more careful checking out the dimensions in diptrace.

Minimal Picaxe LED blinker

I just found a different way to make an LED blink with a picaxe 28x1:

main:
   inc b0
   let pin7 = b0 >> 7
   ' do other important stuff here
goto main

Bluetooth

im looking to upgrade my Picaxe 28X robot to be controlled by with bluetooth....
if i get a USB adaptor module to plug into my computer what should i use to recieve the signal?
also what kind of program would i need to control the robot?

thanks muchly

eeprom and picaxe 28x1

hi i wish for my picaxe chip to access an external eeprom chip any one got any ideas how to manage this

many thanks rhys

Suicidal Picaxe Program

Here's what happens on a Picaxe 28x1 in a project board when you connect pin C.7 to the Reset pin. Check out areas F and H in this photo.

The reset function in a Pic(axe) is made so that when it is pulled low, the chip resets. An on-board 4700 Ω resistor keeps the pin high during normal operation. The little button pulls it down.

This Picaxe really is stuck in a moment and refuses to believe:

Lcd 20x4 and Picaxe 28X1

hi have one of these 20x4 screens does any one have a pic of it attached to a picaxe 28x1 project board

Darwin is a hacker

How many monkeys on type writers does it take to write the collected works of Shakespeare? Or Asimov for that matter? It has been claimed, but never tested, that a limited amount of monkeys will indeed produce such a work.

Given enough time...

Lcd 16x2 and Picaxe 28X1

hi i am going to buy a 16x2 lcd screen from ebay and need to know how to connect it to the picaxe 28x1 board

the lcd screen is the same as this one

http://81.134.141.187/epages/Store.storefront/?ObjectPath=/Shops/Store.TechSupplies/Products/LED008

any help is appreceated

Test bed for a 6 legged, 3 servo walker.
Using a
I was so impressed by the video of the Pololu hexapod walker I thought I'd have a go at one of my own.  This is a rebuild of my initial attempt using a PicAxe … Read more
The PICaxe USB cable is just a USB-Serial Converter.  Like a lot of USB-Serial converters, it's based on the FTDI 232 chip.  This means you can use most FTDI … Read more

ADC and PWM

Hi guys,

I've finally found time to test te ADC and PWM capabillities of my picaxe microcontroller :)

Sorry for my bad english, but I'm a little bit tired ;)

 

EDIT:

added an SRF05 ultrasound sensor for some cool FX ;)

UNIO memory breakout board

A few weeks back I aquired some memory chips(samples rock). These are the special unio memory chips, essentually 1 wire for both input and output. As this is an 8 pin chip with only 3 of the pins being useful, I decided to try to make a simple breakout board with some small 5x5 hole pcb boards I grabbed from SF. These unio chips can be used with the20x2, 28x2 and 40x2 and the three pins are vcc, vss and I/O. The chip id is 11aa040(4k memory)

As recommended, I've added a small pullup resistor to the board. This is the results of...

AXE121 is an cheap and easy to use Line Follower Kit that can be easily connected to the Picaxe 28 pin Project board. You can buy it on the PICAXE on-line … Read more

LCD03 and PICAXE 28 pin Project Board

Hi,

Does anyone know how to connect a LCD03 to a picaxe 28x project board?

EDIT: I've already connected the LCD successfully to the board :D.

Navigates around via ultrasound, turns on the lights when it gets darker, looks just awful and feels raped.
Using a
First of all, hello LMR! I'm new here so very impatient to learn everything and meet everybody. I saw this website few months ago and instantly fell in love with … Read more