birt barcode open source POTENTIOMETER SENSORS in Font

Make QR in Font POTENTIOMETER SENSORS

CHAPTER 6 POTENTIOMETER SENSORS
QR Code Encoder In None
Using Barcode encoder for Font Control to generate, create QR Code 2d barcode image in Font applications.
www.OnBarcode.com
Create Barcode In None
Using Barcode maker for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Figure 6-3. Plot of Raw values versus shaft angle The pot resistance value you buy depends on how many degrees of rotation your application requires. The 10k Raw values change almost linearly with angle, so if you were going to be marooned on a desert island, you d pack the 10k pot. However, picking the right resistance for your application greatly improves the angular resolution you ll get. The graph in Figure 6-4 shows the range of Raw values, given that you re only using the pots in their optimal range: 90 degrees for the 50k , 180 degrees for the 20k , and 270 degrees for the 10k .
PDF 417 Creation In None
Using Barcode encoder for Font Control to generate, create PDF-417 2d barcode image in Font applications.
www.OnBarcode.com
Data Matrix Encoder In None
Using Barcode generation for Font Control to generate, create DataMatrix image in Font applications.
www.OnBarcode.com
Figure 6-4. Raw value over optimal operating range
Generate QR Code 2d Barcode In None
Using Barcode creator for Font Control to generate, create QR Code 2d barcode image in Font applications.
www.OnBarcode.com
EAN 128 Creator In None
Using Barcode generation for Font Control to generate, create EAN / UCC - 14 image in Font applications.
www.OnBarcode.com
CHAPTER 6 POTENTIOMETER SENSORS
Code 39 Extended Maker In None
Using Barcode creator for Font Control to generate, create Code-39 image in Font applications.
www.OnBarcode.com
Make Planet In None
Using Barcode generator for Font Control to generate, create Planet image in Font applications.
www.OnBarcode.com
Angle Sensor Construction
Quick Response Code Reader In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Create QR-Code In Java
Using Barcode encoder for Java Control to generate, create QR Code 2d barcode image in Java applications.
www.OnBarcode.com
The Bourns 3310C or 3310Y potentiometers make excellent angle sensors for the NXT. The 3310C in Figure 6-5 has three terminals on one side, whereas the 3310Y has them coming out the back in a triangle pattern. You should definitely solder your connections to these pots, or else the wires will pull off too easily. (Both these potentiometers can be purchased from Digi-Key in a variety of resistance values.)
Making 2D In Java
Using Barcode generator for Java Control to generate, create Matrix image in Java applications.
www.OnBarcode.com
UPC - 13 Decoder In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Figure 6-5. Bourns 3310C potentiometer Start by stripping the ends of the speaker wires about the same length as the terminals on the pot. Figure 6-6 shows all the components. Remember to have some heat shrink tubing slipped on the wires before you solder.
Draw GS1 128 In Objective-C
Using Barcode creation for iPad Control to generate, create EAN 128 image in iPad applications.
www.OnBarcode.com
UPCA Recognizer In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Figure 6-6. Homebrew angle sensor step 1
European Article Number 13 Drawer In Java
Using Barcode generation for Android Control to generate, create UPC - 13 image in Android applications.
www.OnBarcode.com
Generate ANSI/AIM Code 128 In Java
Using Barcode creation for Java Control to generate, create Code128 image in Java applications.
www.OnBarcode.com
CHAPTER 6 POTENTIOMETER SENSORS
Creating EAN13 In Java
Using Barcode generation for Java Control to generate, create EAN-13 Supplement 5 image in Java applications.
www.OnBarcode.com
QR-Code Printer In Objective-C
Using Barcode creation for iPad Control to generate, create QR Code JIS X 0510 image in iPad applications.
www.OnBarcode.com
For the example shown in Figure 6-7, the angle sensor will increase in the counterclockwise direction. The connections might look backward, but remember that the terminals are on the back of the 3310Y. Although it will work either way, it s a good idea to tie the unused outer terminal to the center. After the wire has been wrapped around the terminals, solder the connection.
Code 128 Code Set A Scanner In VB.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Code 128 Printer In Java
Using Barcode creator for Android Control to generate, create Code 128 image in Android applications.
www.OnBarcode.com
Figure 6-7. Homebrew angle sensor step 2 Slide the heat shrink over the connection and shrink with a hair dryer. Your sensor should look like Figure 6-8.
Figure 6-8. Homebrew angle sensor step 3 The mounting hole size for the pot is 1/4 inch (6.355mm), which is just a little bigger in diameter than a Technic hole. Enlarging the hole is easy because you can drill through LEGO plastic with only a drill bit held in your fingers or with pliers, as shown in Figure 6-9.
CHAPTER 6 POTENTIOMETER SENSORS
Figure 6-9. Hand drilling triangle beam A Technic triangle beam is an excellent part to modify because it s thin enough to use the mounting nut included with the potentiometer to fasten it. Figure 6-10 shows the pot mounted to the triangle beam. The original NXT kit came with two of these triangles, but you can buy them from vendors listed in Appendix B (for example, you can buy 25 Technic triangles from LEGO Education by ordering part number W991332). I usually drill out only the center hole on the wide side of the triangle and leave the rest of the holes for mounting to the project.
Figure 6-10. Mounted angle sensor
CHAPTER 6 POTENTIOMETER SENSORS
The shaft of the pot fits nicely in the 16- and 40-tooth gear centers with only friction. However, you can make a more universal connector by gluing a blue axle peg to the shaft. This needs to be done with a little fixture to ensure the proper alignment and positioning. Build up the fixture shown in Figure 6-11 and make sure that the little screwdriver slot in the end of the pot shaft is horizontal. Put a drop of gel-type, fast-setting glue into the hollow of the axle peg. Slowly slide the triangle/pot assembly down so the pot shaft fits inside the peg. While you re pushing, watch that the glue is not pumping out and getting into the moving parts of the pot. Also make sure you fully seat the assembly against the spacers, as shown in Figure 6-12. Let the whole thing sit long enough for the glue to set fully.
Copyright © OnBarcode.com . All rights reserved.