Let's Make Robots!

08M

Creating a Picaxe 08M LCD Driver ( 2 wire Driver )

A few weeks back I decided to make another attempt at driving an LCD using picaxe. My first attempt was almost a year ago, however when the $6 LCD failed to display anything I wrote it off as defective.

But after a long night where i found it hard to sleep i stumbled on a  site that should me clearly how to power up and set the contras with backlight on. 15 minutes in and i was hooked. LCD light boxes displayed as i adjusted the contrast using a 1oK pot.

Although nowadays I mostly use Arduino based controllers, I'm still a big fan of Picaxe 08 chips when it comes to simple projects. But I have never seen a really … Read more

Max servo size for picaxe 08m2

Hello i would like to build my first robot using the picaxe 08m2. The servos i have are: two mg945 servos stall torque is 12kgcm (hooked up in parrallel as they will lift the arm up together.) 0ne unbranded servo with the same torque as the above servos for the gripper. The other two are 9g servos that will be used for activating switches. 

08M IR Transmitter for Lego Power Functions

Hi,

I recently got a Lego Power Functions set and noticed that it uses an IR communications protocol for the remote control, and this got me thinking that it would be good to create my own remote control with a view to adding some automation.

The protocol document can be downloaded here: http://storage.technicbricks.com/Media/2010/TBs_20100304_1/LEGO%20Power%20Functions%20RC%20v120.pdf

The document states that

Problems with programming picaxe

Hello! I have a problem with programming PICAXE 08M.

It says it can't connect to the CPU. And i don't know why it says so.

I'm doing everything what it says but it doesn't help me.

Can YOU help me to program it?

EDIT: I connect the cable to the COM port and put batteries. Then i wroted the program and try to move it to CPU.

Funny behaviour in a picaxe...

Hi all, I hope people can help with this, cos I'm baffled.

I've been using a picaxe 08M2 (the new one) to control a stepper motor, which works fine until I want to use the free input to trigger the motor.

When I do that no input affects what the chip is doing

I took it back to the program, nothing odd there, so I tried using a pushbutton switch to turn an LED on and off.

If I use this program:

main:

if pinC.3 = 1 then

high 1

   This is my Tic-Tac-Toe playing robot controlled by a Picaxe 08M . It plays a perfect game as long as it goes first and it always goes first . It is a work in … 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
 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 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.

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
Warns me when a parcel or letter enters the Post box - "FireFly" Themed
     For years now i have wanted to "Hot-Wire" my Mail/Parcel Box, unfortunately most mail boxes in CH can only be found on the ground floor (strange but true) … Read more

Timing interval between interrupts - which Picaxe?

Is this true? A Picaxe08M is awesome, except it will not give me a way to measure the time between interrupts?

Should I upgrade? Which Picaxe do you recommend? I am looking for a minimum pin count.

Don't say Arduino now, ya hear!

Monitors room temperature
Hi everybody! Just finished with my new little gadget and feel like sharing with LMR. :) The gadget is room temperature monitor for our baby we are waiting to have … Read more

microcontroller choice

i have  a problem: i only have on uc, an arduino, and have to build a tx unit with some cheap ebay radio modules. does anyone have any suggestions as to a small microcontroller for this unit. it only needs 2 or 3 channels.

 

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".

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.

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
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
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
sits in one spot and does nothing for the moment
Using a
Basically this tank was gutted and is being rebuilt with sensors and a new brain. I've posted info on this tank and how cheap it was to aquire, so now this is going … Read more
avoid obstacles
Using a
This is my first bot. I made it exactly one year ago. My first project using all the cool stuff I learned about here at LMR. It was built using a picaxe 08M proto … Read more
Update: (this was all done a few months ago) Removed the servo that moved the eyes. Eyes are now fixed. Added an infrared receiver. Still toying with the program, … Read more

bluetooth com and processing language rig

These are the source files related to the setup I mentioned in CTC's post about wireless serial com.

 

Reposting info on the setup just for ref.

Alrighty, ctc, got the rig working. The setup is the following:

<ir beacon> transmitting byte sequence from 1-9

<relay station> picaxe 8m with ir receiver showing correct data in the debug window.

Transmitting the byte sequence received from ir beacon via bt to my desktop running the processing code.

Modifying picaxe8 proto boards to fit your needs.

Since my projects contain a lot of 08m procs, I decided a while back to grab a couple of the proto boards for for fun and experimentation. With these boards I also wanted to be able t o reuse them after doing some experimenting with them as we all know desoldering can be a chore.

So here are a couple of ways I'ved moded the proto boards.

1. Choped the proto side off of the board, added a set of male header pins and rewired the power lines. Also used the proto side of the board for a 6+v to 5v regulated via ldo reg.

mini ir beacon

So this is the mini ir beacon I've had mulling around but never got around to building one....or finally built it. I'll post the current code for this in a bit.

The circuit is pretty basic in that it just uses a picaxe, an ir emitter, led, some resistors and a npn transistor. Ialso wanted to keep it small(hence the mini) so decided to use some lr44 batteries to get around 4.5v out. The battery holder was fashioned out of some 18ga colid copper wire which does a great job of holding things together.

 The setup

And now for something completely different!

** Update **

I delivered the gun to KJ precision engineering for testing. It has been named "Soldestroyer" by my former boss.