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March 29, 2007
Tutorial - RedBoard Turbo Hookup Guide
about 10 months ago
In regular ol' Arduinos, like the UNO, the double data type has no more precision than the float data type (see https://www.arduino.cc/reference/en/language/variables/data-types/double/ ) . On the RedBoard Turbo, are doubles more precise?
about 7 years ago
This sounds stoopid, but is there a proper way to crimp these? Just mash with a pair of pliers? Looking through parts catalogs I see a zillion different types of crimping tools and I've never been clear on which tool to use with which connector.
about 8 years ago
A second question...
I picked up a 5V 2AMP power adapter and that extra amperage made all of the difference, it's now printing like a champ!
But that leads me to a power supply question.
I'm going to be driving the printer with an Arduino UNO with an Arduino ethernet shield on it. I would love it if I could drive everything with just this one power adapter. My question is, if I use this power adapter on the Arduino and just connect the printer to the Arduino VIN pin, will I be OK? Can the Arduino handle up to 2 AMPS going through it? Will the big current changes that I imagine the printer causes when it goes from printing to not printing and vice versa be OK? Or should I play it safe and use two separate power supplies, one for the printer, and another for the Arduino?
Just wondering, in the Chinese manual it shows two places to connect power...pin 2 for variable power, and pin 3 for I believe 5V only (the manual's English translation says this...
+5V,输入电源 input voltage (一般情况下只用+5V,VH 不输入 gerneral
condition,only use +5Vm VH not input )
...which is confusing only to me, being an English only reader and speaker. So, if you have a 5V power supply is one pin better than the other? (the cable you've provided uses pin 3).
News - New Products Extravaganza…
about 9 years ago
Holy crap, this new product list is just dripping with win! Gimme one of everything...
about 9 years ago
OK, it turns out things ran OK with the inverter on a separate power supply, once I tried a second inverter. Add me to the people who didn't really get it that the inverter was being powered by the Arduino's Vin and fried their inverter when the Arduino was connected to a 9V battery. Very annoying, that.
Also add me to the list of folks who experienced some of those random ghost effects...EL wires not shutting off completely, etc. One thing I noticed about that, it only seems to happen with very thin ("angel hair") EL wire. Thicker stuff seems just fine.
Hmm. Can I use the separate 3V DC power source for the inverter and just hook the negative of the DC side of the inverter to the negative of the Arduino (which is getting its power via a 9V battery)? Would that help, or would BAD THINGS HAPPEN?!?!
I have my sequencer working (sequentially lighting up 4 3ft lengths of EL wire via the IFW 3294 3v inverter that you recommend) when I power the Arduino with a 9 volt wall wart AC adapter (I'm pulling power for the inverter from the Arduino's 3.3V power pin).
But when I try to run the Arduino via a 9V battery, things no longer work. I've tried powering the inverter from the Arduino's 3.3V pin, and I've tried powering it via a separate 3V AA battery pack. No luck either way.
Is there some reason things won't work when battery powered? For the application I need this for, it pretty much must run without AC power.
Tutorial - Heartbeat Straight Jacket
about 10 years ago
Just checking in to see if there's an ETA for the Arduino shield for the EL sequencer? Excitedly waiting!
about 10 years ago
Hmm, I'm confused. Your "Compatible with Arduino" feature above seems to imply that you can program this via the Arduino software.
But on the Sparkfun forum at http://forum.sparkfun.com/viewtopic.php?p=76091&highlight=#76091 it looks like that's not the case. Is there really no way to program one of these puppies with the Arduino IDE that I've grown to know and love (or at least be comfortable with).
No public wish lists :(
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