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  1. O

    UV exposure box timer

    Building a timer with countdown and buttons to set the timer is probably among the most "tried and tested" PICAXE uses, but at least the applications vary. In this case I wanted build an UV exposure box for photographic PCB development, and being a little forgetful at times, I thought it would...
  2. O

    Beer Brewing Thermometer

    A friend of mine is an avid all-grain home beer brewer. He prefers to keep things as manual as possible, but one thing bugs him: the thermometer is a delicate piece of equipment, and the lautering process requires careful monitoring of the temperature. Of course, digital thermometers come a dime...
  3. O

    18B20 in parasitic mode

    I want to use an 18B20 temperature sensor with a 08M. Two questions: 1. How is the 18B20 addressed? (Or isn't this necessary? My only experience with 18B20 devices is that I've wired my house with multiple 18B20 sensors using the 1-wire USB adapter available from Hobby Boards; and with several...
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    High Speed Photography Flash Timer

    Inspired by the macro rail project posted here a few weeks ago, I decided I wanted to experiment a little with PICAXE processors, too. My project is a millisecond (or at least close to that) flash delay timer for high-speed photography. For those that aren't familiar with that kind of...
  5. O

    Calculated pauses don't work?

    I'm somewhat stumped with the following piece of code. I want to fire a series of flashes with a predetermined delay inbetween. But somehow I can't get the delay code to work. Here's what I really wanted to code: [1] pause_length = flash_delay * 100 [2] for j = 1 to number_of_flashes [3]...
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    Serving interrupts while waiting for IR input

    I have a 08M based application that is intended to just sit there and wait for either user input via IR or an interrupt based on activity on pin 2. Ideally, the program should simply sit at: ' Wait for a key. infrain2 but immediately execute the interrupt routine if activity is detected on...
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