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September 17, 2011
about 2 months ago
This looks amazing. I've wanted to take one of my IBM Model-M keyboards and update it to USB and Bluetooth so it could be wireless too. In the past I've put the parts together, but trying to get the charging circuit and battery stuffed inside the keyboard along with a separate Bluetooth board, then route all the wires to a small stock Arduino Nano or MKR1000 sized device left me frustrated and putting it off for another day.
Where the Artemis Nano has all that built into a single board, I really need to set aside some time and see if this is the solution to my problems!
about 4 years ago
I'm interested in using this with a SparkFun Photon RedBoard. The Photon runs at 3.3v, but it looks like this LCD shield uses 5v (per schematic). Can I modify it to use 3.3v, or does it need all 5v?
about 5 years ago
This one will NOT work that way - the pump mechanism works in the same fashion regardless of motor rotation.
I wouldn't as it's not designed to do that. The portion of the pump hooked to the motor does not appear to be sealed sufficiently to keep water out of the motor.
If by small ammounts, you mean just a couple drops during normal operation, then it might be possible. I would expect the droplet to follow the same path of least resistance and exit with the air. BUT as with any time you mix water and electricity, it's better to air on the side of caution. In this case, I'd suggest you put in some sort of canister or drying filter between the pump and the intake where it could pull in moisture.
Just got ours and I can answer both:
A1 - Yes, there is a small flow of air out of the outlet. I don't have a vacuum/pressure gauge to give more specifics.
A2 - The motor is NOT polarity marked, and the design of the vacuum pump does not require the motor to run in a specific direction. No ability to reverse the inlet/outlet by simply reversing the wires.
My students and I were able to play with ours a bit yesterday. If the pieces you're looking to pick up and move are small/light and you have a small (say 1/8") tip on the pick-and-place wand it would probably work. The vacuum produced is pretty constant, but low flow of actual air. If you have a very compliant rubber tip that would seal air leakage you might get away with larger components.
I can tell you that it has the vacuum pressure, but not the total air flow necessary to really pick up much when used as a standard floor vacuum. If you had two flat surfaces, it could possibly be use in a pick-and-place machine, but not easily for ad-hoc picking up of small things.
Following up on my earlier question, I ordered one and I am happy to say that it does run on 7.2V quite well. My students and I did some ad-hoc tests and it works well enough we're going to try to build a coffee grounds gripper next. (Spoiler: Thankfully the pump is a pretty simple design and quite easy to take apart and remove coffee grounds from....)
about 5 years ago
I see that the VirtualWire library has reached end-of-life (http://www.airspayce.com/mikem/arduino/VirtualWire/) and now suggests using the RadioHead library (http://www.airspayce.com/mikem/arduino/RadioHead/). They mention SparkFun on their page of places with compatible hardware, but they don't mention this one in particular.
Which radio class does this one fall under?
No public wish lists :(
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