North Texas Battle Group. SDP/SI. How to Make Springs. There are three things you'll need to read before you get started.
First, the DISCLAIMER: Second, before you start to work with spring wire, read the section on safety . When you have read that section, read it again. No kidding . And third, about this document: I've tried to write for the benefit of someone who has (or can gain access to) basic hand and power tools.
In its first incarnation, this site was made in frames. Any comments or suggestions for improvement should be made to yours truly . This section will give you some basic information about springs, what they look like, what their parts are, and how they work. If you already know about springs and want to get right to it , be my guest. There are three basic types of springs: See the Glossary for detailed diagrams of these types of springs.
This gear template generator generates shapes for involute spur gears. Involute spur gears have involute shaped teeth. The gear tooth generation is not perfect. Ring gear / planetary motion gears You can also generate templates for inside gearing, such as would be used for planetary motion gears. Rack and pinion gearing You can also generate rack and pinion gears. There are some excellent notes on gear undercut and other design issues for small gears here on the web. The involute shape of gears is very important for gears that run at high speed. Printing the gear templates To print the gear template, use the 'Print' button, rather than just printing the web page from the browser. Ball Bearings:Miniature bearing:Ceramic Bearing:Ball Bearing. DIY spot welder can join anything together, even copper. Circular Halbach using 12 rare earth magnets. Autonomous stabilization system for a helicopter. Hardware The essential components of the hardware system are Protoboard and MCU Push Buttons Gyroscope Voltage divider XY-Accelerometer Voltage regulator Z-Accelerometer Helicopter Motors - Optoisolator Circuits “Launch Pad” and IO Tether Power Supply The Atmel Mega32 microcontroller is mounted on the provided custom made protoboard.
We added three ports, for interfacing with the motors and sensors. Port A is used for receiving the outputs from the sensors, Port C is used for the PWM outputs to the motors, and Port D is to interface with buttons that are used to turn on the helicopter as well as the debug LED which proved invaluable for the development of our project. Due to the current that is required by the whole system, we replaced the voltage regulator with a LM340 5V regulator that can support our design's current needs better. We were able to sample a single chip rate gyro from analog devices (ADXRS150EB) . Software Results of the design. Third Hand. In the past I've used the third hands/helping hands available at chain electronics shops and have been frustrated with their usability.
I could never get the clips exactly where I wanted them or it took more time than it really should to get setup right. I also wanted the ability to hold small circuit boards and alligator clips just don't do a very good job. I was familiar with the adjustable coolant hose systems used to spray coolant at cutting tools in the machining industry and thought that would be a great place to start. I ordered various nozzles and hose segments from my favorite online machine tool supply company and started experimenting. This is what I came up with. These arms can be placed into pretty much any position and they will stay there. Another nice feature is that you can make all sorts of attachments for holding whatever you need to work on. All you really need are some simple hand tools, a couple taps, a drill bit and a drill to make the basic version.
Canon FD lenses on an EOS mount.