Tag Archives: Lessons

Sketchup Tutorial LESSON 6: Understanding Design Rules

One of the keys to success in mechanical design comes from understanding that you can draw things that you can not build. Just because you can make it in Sketchup does not mean your fabricator can make it. You must design being mindful of the capabilities of your fabrication infrastructure. This comes down to the concept of design rules. Design rules are a set of conditions. If you design your devices following the conditions in your design rules, your design will fabricate properly. Your design rules will depend on your fabrication infrastructure. In our case, we are building on our own 3D printer, but none the less, we still need to develop some design rules. In this video we show how to design a simple test device that will allow us to know how small of a line we can print, and how closely we can put two holes to each other. This simple set of two design rules is a good start of successful designing for a 3D printer.

Sketchup Tutorial LESSON 3: Printing Sketchup Designs on a 3D Printer

In this video lesson we describe how to print designs from Sketchup on a 3D printer.  Key thing is you need to go to the sketchup Extension Warehouse, under the window tab in scketchup. Then you need to search for and install the .STL Export extension. With this extension, you can export your design file as an .stl file. Then you can load the .stl file into your slicer software to generate the gcode for the printer. I found that it is very straightforward to go from sketchup to the 3D printer.

Raspberry Pi Zero Model W Tutorial 2: Making a Wireless Portable IP Camera

Raspberry Pi Zero W Camera
Super Cool Portable Wireless streaming IP Camera

This is a super cool project where we build a concealable, portable, live streaming IP camera based on the Raspberry Pi Zero Model W, and the Raspberry Pi camera module. In order to do this lesson, you need to start with Lesson 1,  where we show you how to get the IP address of your Pi zero, and how to get it booted. For this project, you need a Raspberry Pi Zero Model W. If you do not have one, you can get the ESSENTIAL HARDWARE HERE.  In addition, you will need the Raspberry Pi  Camera, which you can GET HERE.  The Pi Zero needs a special Camera Cable, which you can get HERE.

That should be the equipment you need to this really fun project. When you are ready to go, the instructions are in the video below.

Raspberry Pi Linux LESSON 20: Backing Up Your SD Card and Operating System

It is fairly easy to corrupt your SD card or your operating system on the Raspberry Pi. If this happens, and you do not have a backup, you will likely have to rebuild your system from scratch. Hence, it is important to be diligent in keeping your Pi backed up. In this lesson we show how you can back it up using Windisk32Manager, a free and simple program that will do the trick.

Please note that you can not back the card up by simply using a windows drag and drop of the contents. You actually have to make the disk image as shown in this video.