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.
I recommend printing the gears with an ink jet printer. Even cheap ink jet printers print very scale accurate but Not all laser printers are accurate. This is the new version (as of September 2015). You can still access the old Flash based version Getting the printout to scale correctly Different browsers print at different scales depending on browser type and printer configuration. Some notes about gear design and this gear template generator This template generator is intended for generating paper templates for cutting low precision gears from plywood, phenolic, or other suitable materials with a band saw. This gear template generator generates shapes for involute spur gears. The gear tooth generation is not perfect. 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.