I put one in my Amazon cart but they weren't on "add-on item special" at the time, so I didn't order it then. But some months later when I was ordering enough qualifying stuff for some other random order, these were back on special and I bought one. It was another year before I decided to mount it on my printer and really try it out. I wish I had tried it earlier. It really works nicely. I have it "zip-tied" with velcro straps on top of my left Z-motor. Holds my filament spool nicely without despooling or binding.
I did have to experiment some to get the filament to feed smoothly. I routed it down the side of the printer to keep a steady angle pulling on the spool the whole time, zip-tied some corrugated wire-conduit there and fed the filament into that.
Then I fed the whole thing down first, then up and around into the top channel of my printer so it keeps a graceful curve in all positions. I kept enough conduit on it to act as a guard for the filament to keep it from dragging against the threaded rods at the top of my Prusa Mendel i2. The conduit pulls right up against the input feed of my print head , which is just fine. If it pulls too far into your print head where it might get pinched, just zip-tie it loosely to some rising cable so it stays out of the way.
It’s a huge undertaking, and I am delighted to announce that the life sciences team is now ready to graduate from our X lab and become a standalone Alphabet company, with Andy Conrad as CEO. While the reporting structure will be different, their goal remains the same. They’ll continue to work with other life sciences companies to move new technologies from early stage R&D to clinical testing—and, hopefully—transform the way we detect, prevent, and manage disease.
The team is relatively new but very diverse including software engineers, oncologists, and optics experts. This is the type of company we hope will thrive as part of Alphabet and I can’t wait to see what they do next.
If it's reliable enough.
#reprap #zprobe #proximitySensor #adafruit
The VCNL4010 sensor is a nice way to add a small-distance proximity sensor to your microcontroller project. For longer distances (in the range of cm, you can use a SHARP IR distance sensor, but those are only good if the object is over 10 cm away. The VCNL4010 is designed for much shorter distances, no more than 200mm (about 7.5") and under our experimentation we found it worked best at distances of about 10-150mm. It would be good for say detecting when a hand moved nearby, or before a robot smacks into a wall. The sensor also has an ambient light sensor built in.
This sensor is easy to use with any microcontroller that has i2c capability. It is 5 volt compliant so you can use it with 3.3V or 5V logic with no risk of damage. There is an onboard 3.3V ultra low dropout regulator so you can power it with 3.3 to 5.0V. However, if you can give it 5.0V that is ideal since the VIN voltage powers the IR LED and the higher the voltage you can give it, the more powerful it is.
New! As of Sept 23, 2015 we are now shipping this breakout with the updated VCNL4010 - the library has changed and the chip is slightly different in that it now supports interrupts. We also made the board a little more compact. However, the overall proximity functionality is identical.
We have working example code for the VCNL4000 version of this breakout, in the form of an Arduino sketch. It is easily adaptable to any microcontroller, check out the github repository to download! Not for use with the VCNL4000!
If you have the original VCNL4000 version of this breakout, this github repo has an Arduino sketch for it. Not for use with the VCNL4010!
#sensors #proximity #lightsensor
My other concern is the conical angle. If the "spot" is too wide I'll have to be careful to place it far enough away from the hot end to see only the bed. I could place it on a post so it's only a few mm higher than the nozzle tip, but I'd rather put it higher.
I lost my OnePlus 2 Invite! I was too slow to respond and it expired. I remembered it at 27 hours. It expired at 24 hours. Dammit!
Somebody click this link and help me get my next invite faster, please.
Unless someone has a spare they want to send me... :-D
Well, what I did get printed came out nice and flexible. It stuck to my warm glass with ease.
Onto the Polymakr Polywood filament instead. So far it looks like Polymax except it's brown. I'll try sanding it later, but it just looks like regular Polymax PLA so far. shrug
It's notable for me because this is the first time I've designed and printed something from scratch for my 3D printer. If you haven't done this before, let me stress a little more how cool this is. The plastic pieces in this photo began life as source code. I wrote some code to describe a physical component, clicked a few buttons, and the physical component became a real thing. I coded a real thing. How cool is that?
- Brain Dots
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