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Monday, September 28, 2015

New Heated Print Bed for the Up! Mini 3D Printer works great!

If you have a Up! Mini 3D Printer then we highly recommend obtaining this upgrade. The new UP! Mini Bed Rev 3 reduces warping dramatically (at least compared to our original heat bed).

The installation is an easy 30 second job, 2 screws, one cable and you are right to start printing.

The board not only improves the heat bed performance it includes new indicator LEDs.

Combing this upgrade with the third party firmware gives an amazing amount of control to large print 100 micron jobs on an Up! Mini.

What are you waiting for? Go get it!

Sunday, September 27, 2015

Ownership of website: Lets Make Robots changes hands

The ever popular robot website with showcases and dicsussions has been purchased by Robotshop.

Under New Management 

Full press release here:

This might be good, this might be bad. As we say here are AiS, change is the only constant!

Sunday, August 16, 2015

Changing the Opto EndStop for Prusa/GRBL to Allow 5V signals

Having built the version 7 Opto Endstop that is the RAMPS standard for Prusa and other RepRaps I recommend a slight change to the circuit.

The official circuit is:

R1 needed to be lower than 180 ohms for some of my sensors to allow full saturation of the detector base.

You could go with a 100 ohm resistor instead of 180 ohm.

Sub note, the only difference between the Vishay TCST 1103 and the Vishay TCST 2103 is that the latter has an extra plastic flange to make mounting easier. The actual electronics are the same:

TCST 1103:

TCST 2103:

Wednesday, August 12, 2015

Using the Raspberry Pi as a sound card


The Raspbery Pi 1 B board is fully capable of adding sound to your next project.

I have several Raspberry Pi 1 boards lying around not doing much since they were replaced by Raspberry Pi 2 boards.

I have decided to use them as general purpose sound generation boards in my projects.

I initially thought of playing back MP3 files over a speaker in response to serial commands.

I have now added the concept of on the fly (not prerecorded) TTS (Text to Speech).

Combining with Vision Processing (OpenCV)

Sunday, February 15, 2015

Raspberry Pi 2

Reminder to activity the camera module for the Raspberry Pi 2 you still need to load the kernal module for the bcm2835 with:

sudo modprobe -i bcm2835-v4l2

Saturday, September 27, 2014

Accessible Slip Rings for Robotics

Sparkfun now stock small sliprings allowing electrical current to be carried accross a mechanically rotating area. From SparkFun themselves:
"Each slip ring is capable of handling a continuous working speed of 250RPM, a current rating of (a whopping) 15A, and an operating voltage of 380VDC/AC. We aren’t kidding about how compact this little guy is, with only and outer diameter of 22mm for the body an 44mm diameter flange, you should have no issues fitting these into your next project. Additionally, the 250mm stranded wires protruding from each side of the slip ring have a thickness of 16AWG while the whole assembly has a water protection rating of IP51."