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    uCs on BBC News...

    Thought people might be interested in this: http://news.bbc.co.uk/1/hi/magazine/7049002.stm Sounds like a PICAXE project to me. Though they've conveniently left out "build a launch system" in their "build your own satellite" article :)
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    PICAXE Based G-Meter

    http://www.fowkc.com/gliding/gmeter.shtml Still very much a work in progress, but the initial work shows that the PICAXE is perfect for this kind of project. I'm hoping that with an X1 or X2 part I can really make a high quality instrument with tons of features. Updates will follow as work...
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    PICAXE --> HUD Interface

    Hi Guys, In this thread: <A href='http://www.rev-ed.co.uk/picaxe/forum/Topic.asp?topic_id=5689&amp;forum_id=29&amp;Topic_Title=Bike%2Bcomputers%2B%2526amp%253B%2BPicaxes%2521&amp;forum_title=No+new+posts+please%21+21' Target=_Blank>External Web Link</a> Stan used a PICAXE to &quot;fool&quot; a...
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    Interface PICAXE directly with SD card...?

    Looking at these application notes: http://www.maxim-ic.com/appnotes.cfm/appnote_number/3969 I wonder if it's possible to directly interface a PICAXE with an SD card for datalogging via bit-banged SPI? I don't know much (hardly anything) about how the protocol works, or the kind of speeds you...
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    Strange SELECT...CASE Behaviour

    Hi Guys, When simulating a SELECT...CASE structure: <code><pre><font size=2 face='Courier'> 'Get state of input pins PINSTATE = PINS SELECT CASE PINSTATE CASE UPL 'Up slack on left SIDE = LEFT GOSUB upslack CASE UPR 'Up slack on right SIDE = RIGHT GOSUB upslack CASE...
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    READADC Simulation

    I'm not sure how much demand there would be for this, but I'd like to see the following options for READADC and READADC10 simulation: 1) Use values entered into simulator as it stands now 2) Every time the simulator reaches an ADC command, it opens a textbox asking for a reading 3) *What would...
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    Voltage-Frequency Loop

    Hi guys, I have an 08M running as a voltage-to-audio frequency generator. I'll post the code first: <code><pre><font size=2 face='Courier'> 'Set for 8MHz SETFREQ m8 'Constants SYMBOL ADC_PIN = 4 SYMBOL PULS_PIN = 2 SYMBOL DUM_PIN = 1 SYMBOL MOD_PIN = 0 SYMBOL DIVISOR = 5 'To get pause time...
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    PWMOUT Calculator

    If anyone's interested, I've written a Javascript calculator to work out values for the PWMOUT command: <A href='http://www.fowkc.com/elec/pwmout.shtml' Target=_Blank>External Web Link</a> I've also tried to explain the maths behind it. And as much as it might appear to be, it's not entirely...
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    433MHz Voltage Requirement

    Hi all, I am aware that both PICAXEs and 433 MHz modules (specifically the Mapolin Tx/Rx pair) can be run from 3V (2xAA batteries), but does anyone know of the consequences with regard to data transmission? i.e. is there any increase in signal loss compared to 5v power? I can't check this...
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    ADC Input Impedance

    I've been trying to work this out myself, but I want to make sure. I have the circuit below measuring a voltage level from 10 to 15V divided down by three equal resistors A, B and C. What sort of values should they be to make sure the ADC works, in terms of input impedance? Ideally I'd use an...
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    Using outputs as GND

    I have limited PCB space, and was wondering if I could save a few tracks and jump wires by doing the following: I have space PORTC outputs on my 28X. If those outputs are kept low, can they be used as GND points, assuming I keep the current below 20mA? I know you can do it with LEDs, so I don't...
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    Zener Diode Protection

    I have a system on breadboard which has both 5v and 12v power lines. On two occasions I've managed to accidentally power the 5v parts from 12v, and hence fry the PICAXE and associated LCD display. (And at &#163;7 per display and &#163;5.70 per 28X, that's a lot to destroy) If I put a 5.1V zener...
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    A project that some might be interested in...

    http://www.fowkc.com/gliding/gmeter.shtml I'm building a PICAXE based G-meter for a glider in our club (a gliding club, for the slow among you). I've no idea how it will output the G-reading yet. It might be an audible output based on frequency at the request of one of our instructors, but I've...
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    PICAXE Firmware

    Here's a silly question: How do I know before I buy a particular PICAXE which firmware version is loaded? I'm thinking in terms of knowing whether a part will support 16 or 256 GOSUBs. I tend to buy my PICAXE's from Rapid Electronics, cause I buy enough to get free delivery most of the time...
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    Bizzare DS1307 behaviour

    I've got a Dallas DS1307 slaved to my 28X, no problems on the I2C side of things, but on pin 7 (the one that's meant to flash at a set frequency) is doing something odd. If I set a 1Hz frequency, for 0.5s the pin will just be at 0v. Then the other 0.5s, there's 50Hz mains noise appearing at...
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    28X pwmout and portC

    If I issue a pwmout command on the 28X, does any pinsc command (or any output command that would affect the pin being used for PWM) stop the PWM execution? For instance if I had: 'Start PWM output on portC, pin 0 (3.9kHz, 50% duty) pwmout portC 1, 255, 512 ...more code here 'Change portC...
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