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March 13, 2008
News - January Caption Contest
about 3 weeks ago
And I said, I don’t care if they lay me off either, because I told, I told Bill that if they move my desk one more time, then, then I’m, I’m quitting, I’m going to quit. And, and I told Don too, because they’ve moved my desk four times already this year, and I used to be over by the window, and I could see the squirrels, and they were merry, but then, they switched from the Swingline to the Boston stapler, but I kept my Swingline stapler because it didn’t bind up as much, and I kept the staples for the Swingline stapler and it’s not okay because if they take my stapler then I’ll set the building on fire…
about 2 months ago
I fired up the board last night and got the steppers running – And difficulty in adding a DRO would depend on your definition of difficult. I see what I believe are serial transmit / receive on the board. So it might be as simple as grabbing a microcontroller of your choice to receive the data, parse it, and then print it on a display of your choice.
Or if you plan on having your computer run the thing through GRBL – you can likely find an out of the box solution on ebay.
I wasn’t able to find a 3d version anywhere which is likely what you’re looking for. Its approximately 3.5 x 6". You can find a dimensional drawing for the case it was designed for at http://cdn.sparkfun.com/datasheets/Prototyping/RedPlasticEnc.pdf
It is designed with a large heatsink on the bottom that is supposed to touch the bare metal of the machine. If you were to use a fan, I personally would mount the board vertically with a fan blowing over the heatsink from below. The vertical placement allows convection to dissipate heat even if the fan isn’t functioning.
If you’re mounting it inside the big red enclosure, the only room that you have to mount a fan is in the lid on one side of the box, where it would make most sense to mount it over the stepper controller side of the board, however, I don’t know how effective it would be in that position. There is room enough to mount two 40mm fans on either side of the lid – one for inflow, one for outflow, but again, you’ll be mounting them on the wrong side of the board from the heatsink.
Just got mine fitted for the big red box. A bit of a pain. Perhaps Sparkfun could generate some pdfs that we could cut out, affix to the box, and use as cut guides for a dremel? Better yet, provide a milled box.
I killed a good two hours carefully measuring everything and then lasering those pieces out of the box.
News - October Caption Contest
about 4 months ago
Our Autonomous Pete isn’t working the way it should. Get back to work Pete.
News - September Caption Contest
about 5 months ago
A full three decades after the rest of the 80’s culture, Yanni finally figured out what every 38 year old already knew – that you could cheat at Duck Hunt.
about 11 months ago
Where were you guys a decade ago when I made this circuit out of 555s? Could have saved me an afternoon of grief.
Might I suggest you take your circuit and sell it to the physics folks around the world that are using it in their fancy science learning machines – it’s a far more elegant solution than mine. Although sometimes its worthwhile to ground the power/signal leads for experiments as it prevents erroneous signal noise in high sensitivity environments.
News - May Caption Contest!
about 2 years ago
Support our kickstarter “Microtooth” – An arduino dental crown module. Discover what you can do, while you chew.
Tutorial - Benchtop Power Supply Quickstart Guide
about 2 years ago
I built this thing a while back, and just had occasion to use it. A couple of quick comments.
The solder pads for the wires that connect to the banana jacks are very small. As such, the mechanical connection between the wires and the breadboard are weak. Make the solder pads bigger.
Second – why is the spacing of the banana jacks non-standard? Spread them out to spec.
Personally, I repurposed the banana jacks right into the case of the hard drive.
News - Your March Caption Contes…
about 2 years ago
No, I will find out who has been sleeping on this dog bed. All I need is bait…and time.
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