3.1.7 Machine Control Design

For  3.1.7 We opted to build a motor driven cart that included safety switches and controlled by a potentiometer.





This is the first attempt at creating a Program for our motor driven cart.
didnt work too well due to their not being anypotentiometer requirements and there was no way to stop the cart.




This was our end product.
Obviously had a little to many commands than necessary but this program created a endless loop in which the cart could run with or without using the potentiometer.
















These are our brainstorm sketchesto the cart problem.




We opted for the Top design due to its more concise design.






Lastly here is our actual build

Conclusions:
1.The most difficult part of the problem would have to be the writing of the actual program.
 Because
-Utilizing potentiometer.
-getting program to work non-stop
-Organizing inputs and outputs
-finding icons of parts we need.

2. Two features not included in the design that could be incorporated to better the design could be a
A.- Longer rail or curved rails so that the cart could travel over longer distances and be used more efficently.
B.-Larger  Cart so that more objects could be carried by the cart over the distance.

Sample Program 2/22/11 3.1.7

Today in Prin. of Enineering we created a Simulation flow chart that included variables in a simulation that looped 5 times using the Branch plug.

Content Is King

Q- What is a field/hobby/something you have a passion for (surfing, sailing, robotics, painting, etc.)?
A-A hobby that I have a passion for is learning about fire arms particularly Magpul.

Q- What person or organization in that field has used blogging to promote their brand?
A-They use forums rather than blogs but both have the same use of getting their name out through the sharing of information whther it be straight from them or through customers and owners.
http://www.firearmstalk.com/forums/f53/

Q- What is a field you might see yourself blogging about?

A- I could see myself blogging about different types of firearms , their usefulness, price and efficency.

Activity 3.1.1 Inputs and outputs

Mini Switch:
       Not pressing switch, plugs in 1 and 3
 -unchecked
-zero
-voltage not present
       Pressing switch , plugs in 1 and 3
-checked
-one
-voltage present

    Plugs in 1 and 2
-reversed from when it is in plugs one and three
-switch constantly on when unpressed
-when pressed the current is stopped

     Analog Inputs
Potentiometer
-Range 49-5500Ohms
NTC resistor
-value 1186
NTC Resistor warmed
-value 1140
Outputs
-One can change the direction of the motor shaft without switching between CW and CCW by putting power to O1 for CW or O2 for CCW

15.When the reed switch and eleectromagnettouch there is a current through the reed switch moving it from zero to one
16.normally close
18 the more light the photoresistor recieves the less it can actually resist
19.There is no relationship.
Conclusion

1.the two lines together means constantly on and the lines broken up means constantly off
2.resistance decreases as the NTC resistor heats up because warmer metals transfer current easier than cold metals allowing the current to travel through it easier.