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  1. J

    GS1900-24HP Fan speed hack

    Hi I recently bought a 24-port POE switch from Zyxel. I didn't look too closely to the specs, and just ordered one from a local IT dealer since he recommended it... Should have read the specs (especially the rated noise levels.. )because out of the box the cooling fans are really loud, and I...
  2. J

    Picaxe 18x RTC 32kHz xtal

    Hi, I was recently tinkering with a new project idea. I needed to keep somewhat accurate timing, take some measurements in between, and spend the rest of the time on power save mode as the thing was to operate on batteries. Thought it would be a nice project with picaxe, too long since I used...
  3. J

    m-series chips no longer available?

    Having recently blown my last spare 14m chip, I thought to order some more. But it seems like they are no longer available in the tech-supplies web shop. So are those chips obsolete now?
  4. J

    Underground cable locator

    Hi, A while back I was in a jam, and needed to come up with a way to locate underground cables fast. I had to improvise and make do with what I had. I google search found information about a concept, in which you would inject an audio signal with a suitable carrier frequency into the cable...
  5. J

    AXE027 debug cable

    Hi, Recently I've been facing the increased need of some sort of debugging cable for various AVR projects I have going on.. So far I haven't really felt that I needed a real debugger, but it would be helpful to have some text output from the program to indicate what's going on with the program...
  6. J

    Math with constans

    Today i noticed that PE does the calculation between constants during runtime, instead of consolidating them into one token. For example, it's useful when setting lcd locations: SYMBOL FIRSTLINE = $80 'LCD LINE ADRESSES SYMBOL SECONDLINE = $C0 . . ' to move cursor to position 12 on second...
  7. J

    Measuring frequency with internal timer

    Hi, I've hit a headscrather with my latest project. What I'm trying to do, is to measure the perioid of an AC voltage, to get the rotating speed of a windmill generator. The hardware for this is very simple, I just have an optocoupler connected with 2x 470k resistors in series and a reverse...
  8. J

    Splitting a command into multiple line?

    Hi, Recently i stumbled into problems with using large lookup tables. The goal was to load a 128x64pixel bitmap image into a lookup table, and then with the help of "random" command build the image pixel by pixel to the screen. 1st; it would be nice if it was possible to split a long command...
  9. J

    40x1 A.3 Mixing HSPIout and Settimer causes random resets

    Hi, In my latest program I was going to use both HSPIout and timer. But for some reason, sometimes when I have the timer running, and initiate HSPI transfer the picaxe will reset. In my current test rig, I have a potentiometer, the input from that is used to control a DAC IC via HSPI. I also...
  10. J

    bit / byte / word map

    If you're like me, and sometimes struggle about which bytes make up which word, or which bits make up which byte, this little print will come in handy :)
  11. J

    old LCD display grief HD44780A00

    Hi, I'm having a problem trying to get an older (from about 1994) lcd display to work. It's a a nice 2x40 display with a cool looking stainless steel or chromed display opening :). The problem is that I'm having no luck in getting it to work with picaxe. The picaxe is connected to the lcd...
  12. J

    MCP4921 / MCP4922 SPI interfacing 18x

    I though I'd post the little piece of code i write for bit-bang interfacing of this DAC chip with picaxe 18x. In the manual and in the code examples folder, that comes with the PE, there seems to be a small error in the provided shiftout routines. I'm referring to this part...
  13. J

    E-mail notifications on the forum

    Hello, I don't know if it's just me, but the e-mail notifications don't seem to work. For example, i just logged in, and figurered out i had a couple of pm's in the inbox, but i never received any notification of them, even though i have the "notify me" box checked in my user cp. Any thoughts?
  14. J

    HIGH BITX 28x2

    Hello, While working with my latest project, i noticed that the command HIGH BIT0 doesn't work. The program works, if i replace the statement by let bit0 = 1. However, i remember using the high bit0 command on an earlier project with picaxe 20M.. Though i'm not sure if it worked, because i...
  15. J

    external 4MHz crystal inaccurate timing

    Hello! I'm trying to build a simple temperature logger based on picaxe 28x1. The goal is to build a device, that once per minute reads the temperature on DS18B20, adds them to a temporary location. Then, once per day the average temperature during the day is calculated, and also a min / max...
  16. J

    08M Anemometer with 2x 7 segment displays

    Hi! I've been playing with the idea of making an anemometer for my homebrewn wind turbine for a while now. For the anemometer i was planning to use a normal 3 cup rotor, and i'd measure the speed of the anemometer with an optoslot inside, giving 1 pulse / revolution. For windspeed indication i...
  17. J

    Boiler controller

    Hello all! My first picaxe project is a wood fired boiler controller. The purpose of the controller is to control the air inlet to the boiler, based on the fumes temperature. The goal here is to keep the fumes around 250C, hotter than that and it's wasteful and lower that that it's not burning...
  18. J

    USB download cable problems AXE027

    Hello! I'm having a problem with the usb download cable. When trying to download/access the picaxe with the usb cable i just get the normal can't connect message. With the connection test button i get 0 and 2.1V with the diffrent lamp settings, i suppose 2.1V measured at serin pin at picaxe...
  19. J

    test message

    :confused: i never got the activation message in email, is this working
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