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MrAureliusR

Member Since: August 29, 2013

Country: Canada

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I’m also on the EEVBlog forum as MrAureliusR. Just discovered SparkFun – what a handy website! The breakout boards in particular are extremely handy. Will be ordering many things soon!

  • Product WRL-11777 | about 2 months ago

    you’ve got to program it yourself

  • Product WRL-11777 | about 2 months ago

    of course it is.

  • Product WRL-11777 | about 2 months ago

    To anyone wondering about electret mics:

    You can’t just plug an electret straight in to an input like this. They need a pull-up resistor and some form of preamplification to get a half-decent signal out of them. I made a simple circuit for one with an LM1458. Very simple and easy to use, just remember that you can’t wire it directly to the mic inputs, you won’t get any signal at all.

  • Product DEV-10908 | about 4 months ago

    Argh, after months, I finally gave in and bought the FTDI basic so I could load code from the standard header. However – it doesn’t work! At all! After hooking up my logic analyzer I noticed that the reset wasn’t being asserted on the chip, even though the DTR line was indeed going low. The data is getting through from the RX pin on the header to the RX pin on the chip – it’s just that /RESET isn’t being asserted. I looked more closely at the reset circuit, and everything seems normal – pull-up resistor through button, other side of button connected to ground – but then I noticed that the DTR line is coupled through a 0.1uF cap. WHY?!?! This makes absolutely no sense to me and I think it’s why the /RESET isn’t being asserted. This is really, really annoying after all this time I still have to use my Bus Pirate to program this thing… man, using an AVR Dragon and a regular old AVR chip seems a heck of a lot easier right now. I guess I’ll stick with that (not to mention C is more useful anyway) but I really, really can’t figure this out. Has nobody else had problems with this?!? I actually developed a different system to program this but couldn’t figure out why it wasn’t working, till now! Obviously the reset line wasn’t being pulled low then either.

    Please, I really need help/an explanation!!!

  • Product ROB-12247 | about 4 months ago

    Really? 1.32"? That’s 1 21/64" approx. What a bizzare number to pick. Add on ~0.05" and you’ve got 3/8… why wouldn’t the designed just have picked that?!? (for that matter, drop 0.16" and you’ve got 5/16… still weird but not as bizzare)

  • Product PRT-08985 | about 4 months ago

    It’s 7/32 of an inch if anyone’s interested… what a weird number… here’s a great sheet: http://www.plenco.com/tips/convert_inch_to_decimals_and_mm.pdf

  • Product PRT-08985 | about 4 months ago

    Like what is 0.218" is it 3/16? ¼? 3/8? I worked it out to about ~5.5mm but that only helps a bit. I was looking for 3/16.

  • Product DEV-12053 | about 5 months ago

    Crazy, man, so much in one package. I feel conflicted about whether this even fits the Arduino stereotype.

  • Product TOL-12065 | about 6 months ago

    Dear God, how on EARTH are they selling these?? These are quite literally rubbish – utterly useless!! (mikeselectricstuff’s words, and mine!) If you’re willing to shell out $200 for a scope, you can easily get one that will actually measure things online for a similar price!! It’s crazy to buy one of these things that can barely display a simple sine wave without aliasing, when you can pick up a great second-hand scope for the same price (or less!) The Rigol DSO1052E is only another $100 online, and that’s a great beginner scope… Please do yourself a favour and look elsewhere!!!

  • Product COM-00746 | about 6 months ago

    This is because when you wire two caps back to back with polarity reversed (at least this is what my electronics fundamentals book taught me), so either + to + with - outwards, or vice versa, it will act as a non-polarized capacitor with half the capacitance (just like a regular series connection). So that’s why there wasn’t a problem. Trust me, if you connected one backwards it would have gone off like a bomb.

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