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    Black Friday code for PICAXE Store

    For USA folks, phanderson.com has Picaxe chips at good prices and the service has always been great for me.
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    Windows 7 alternative?

    If you are with Windows 7, then you might well like Windows 10 OS plus a program called Classic Shell -- it gives Windows 10 a start menu that is highly customizable including to look and function just like Windows 7. My professional IT friend claims 10 in it's matured version is better than 7...
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    How to know when a sawdust collector is full

    I'd like to report the final outcome for my friend, to close the loop: he has decided to buy a purpose-specific device, the Bin Master mini rotary unit for $193.00. The price is very reasonable, and I recommended he consider those because of the complete dust-proofing, etc. Since it's a...
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    How to know when a sawdust collector is full

    Hmm, read the spikes to check for rpm? How would I do that? Let's assume an 08m2 -- I don't see the need for anything more than that . . .
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    How to know when a sawdust collector is full

    I'd use the picaxe to turn off the motor when turning on the alarm light . . .
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    How to know when a sawdust collector is full

    The "barrel" to be monitored is made of heavy duty paper product, has a latching top with wrap-around locking ring. The barrel is perhaps 3~4 feet tall, 30~36 inches in diameter. Actually, there are two such units that fill pretty evenly so only one needs to be monitored. I can easily monitor...
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    How to know when a sawdust collector is full

    Thanks all for the suggestions, and I've passed them all on. I think the motor & paddle would be the most dependable, The dust levels are pretty severe and I don't expect optical solutions would work. I'm startled to find that commercial paddle motors are available and a bit dismayed by how much...
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    How to know when a sawdust collector is full

    A friend has asked for help with a problem he has at his commercial woodworking shop. All of his power tools have vacuum hoses attached with appropriate gates that open when a particular tool is turned on. Sawdust created by the tool is vacuumed through a hose system and deposited in a large bin...
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    28x2 vref pin's useful voltage is way below the specified minimum.

    The graph appears to be linear in both axes? I think we have different circumstances and requirements. I can see how you might achieve higher reading resolution over time, but in my application I need a precise instantaneous value because immediately after reading current through the LDR I then...
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    28x2 vref pin's useful voltage is way below the specified minimum.

    hippy, The only other entity that I know of that has succeeded in LDR control to my level is an outfit called Tortuga Audio, and they do it with a whole raft of chips including a PIC and multiple 12-bit DACS. I do it with a 28x2 and four mosfets. That other approach is the only one that I know...
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    28x2 vref pin's useful voltage is way below the specified minimum.

    Alan, you are way over my head. Honestly, I have no idea as to your question, and I haven't tested for monotonicity (which I can only spell by referring to your post). My only "test" has been to have this approach work perfectly in the several dozen 28x2 chips that I have tried it in. All I...
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    28x2 vref pin's useful voltage is way below the specified minimum.

    I've been doing this for years, but got to thinking about describing it here when replying to the "Thoughts on a Unique I2C-DAC Interface" thread. I'm just putting this out there in case someone would find the concept useful. The minimum voltage specification for the 28x2 vref pin was too high...
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    Thoughts on a Unique I2C-DAC Interface.

    I believe I'm getting something like 12-bit resolution using a 28x2, so maybe this information could be useful to you. I use a 28x2 in a stereo preamplifier to control volume using four LDRs (current through the LEDs). In order to have a very precise control of an approximately 50db...
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    ADC INPUT - DAC OUTPUT how can I smooth out the 32 steps.

    If you could free up an input pin, the technique described in this thread provides very precise and smooth output voltage. https://picaxeforum.co.uk/threads/picaxe-controlled-variable-power-supply.10039/ starting at post #23.
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    MacAxePad needs to be updated for 64 bit for future compatibility

    This issue has been on my mind for some years because I like programming Picaxe chips but I want to leave my PC behind and it seems I won't be able to do that as long as I want to write programs with PE6, and I am not about to give that up! In my country, Chromebook has been increasingly...
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    AXE027 - Bain of my life

    Everyone has different experiences, so this is just another perspective. I find that programming the Picaxe is a somewhat unreliable exercise whereas everything else I do on my machines is almost entirely rock-solid with no unexpected issues. I have been programming the Picaxe with the AXE027...
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    I think I need an interrupt, but I'm not sure

    I've been working on a project to allow my semi-obsolete Sony A65 to efficiently take multiple images for the purpose of using the image-stacking technique to allow great in-focus depth of field photographs. This is mostly the purview of 5:1 ~ 10:1 macro photography, but my goal is to make this...
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    Is there a speed penalty when using a Word when a Byte will do?

    Yikes! Not a simple answer, but it seems that a) it could go either way and, b) it really doesn't matter enough to change one's practices. I'm luxuriating in my current project -- automated photography for picture stacking a la Picaxe -- because I have a surfeit of variable storage and speed...
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    Is there a speed penalty when using a Word when a Byte will do?

    Just wondering. Am writing a program with far more than enough Words to cover the variables requirement, wondering if things would run faster if I took the trouble to use only Bytes if that would suffice for a particular variable. Probably nothing significant?
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    I think I need an interrupt, but I'm not sure

    I am trying to build a program & hardware that will connect to my dslr to enable it to take a series of photos for image stacking with camera focus and image spacing controlled by a Picaxe. Hardware is a NEMA 8 motor, Sparkfun stepper controller board, and a 20X2 board I've repurposed from an...
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