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Merry Christmas everyone. I was wondering if anybody could spare a bit of brain power to see if they can come up with a solution to a little challenge I have set myself. I am interested if the Picaxe is fast enough to generate a DCC model train bitstream. I've copied the DCC standard to the...

Hi, I'm working on upgrading a project that acts as a drag strip for human powered go karts. I originally built it a few years ago using a old laptop and a velleman usb interface adapter. I now wish to rebuild some of it using a picaxe instead so it is more mobile and less power hungry. The...

I'm currently building a quiz project which will consist of 10 serial controlled RGB LED table lamps. The lamps are made with 6x RGB LED's that have have a max rating of 50ma, 30ma and 30ma respectively. Initially my plan was to run a 5v power line and accept that the furthest lamp would...

Quick question, I am using one of the pwm pins on a 28x1 as a DAC with a 10k resistor and 200nf capacitor running at 100,000hz. Its all working really great until I go to change the duty with pwmduty (even setting it again to the same value), I get a small voltage drop on the DAC and then the...

A while back I built a 8 channel light switch using opto isolated triacs, I now have the need to upgrade or rebuild it to support dimming. I have been perusing two ideas:- 1. Tried an tested sawtooth and comparators, with picaxe generating a control voltage with a R-2R network, 4051...

Hi, I have two Picaxes both 28x1's. One is running at 5v and one is running at 3.3v. Looking at this old thread:- http://www.picaxeforum.co.uk/archive/index.php/t-8609.html I see that the 28x1's serial programming pins are TTL not ST like the rest of the input pins. With this in mind should I...

Hi, I'm not sure if I have:- a) Discovered a bug b) Not done something right c) Hit a known limitation I'm using a 28x1 and trying to use both the normal serin with a timeout and the Hardware Serial with background receive. I have found if I call a serin command with a timeout before I check...

Just a heads up, I purchased one of these adapters the other day only to find that it didn't work for me. For £3 off ebay it was a stunning deal though. I run Linux on both my desktop and laptop. Out of curiosity I tried it on my laptop and to my surprise it worked. Now my laptop is running the...

I have been building a Laser Tag system based on 28x-1 Picaxe over the last few months. It has now reached the stage where I was able to host a 5 player D-day landing style scenario with the system. I still plan to add features to the system in the future as this is a continually evolving...

Hi, I was wondering if anybody could shed some light on how a guy has managed to achieve 3 things in this circuit and if they are possible to do on a picaxe:- http://www.lasertagparts.com/images/MT%20CORE%20RevH%2001.gif 1. Basically on the PIC in the diagram, pin 11 and 13 turn on two FETs...

I got hold of a couple of 28X1's last week with the intention of making some laser tag guns. I have been having a bit of a play around with them and I really blown away at how easy and quickly I have progressed. I've not had any micro controller experience before, but have a reasonable amount...