Kehillah Student page: Engineering Course

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Updates:

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ensuring that all of the components work without fail. I.e The monitor does not come loose from the arcade box or the buttons not having the correct input when playing games.

worked more on debugging, finished debugging

Concerns: reciever/transmitter problems

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Updates:

• Updated Presentation
• Decided upon the final design of the motor in the back
• One powered wheel in the middle and two support wheels on the side
• Ordered the Following Parts:
• Parts (including qualtities):
• 1x #25 Chain Wheel
• 1x #25 Chain
• 2x 1" Ball Bearing
• 1x #25 Chain Links
• Tools:
• Chain Breaker
• Chain Press
• The tools will become lab tools once we are finished with them

Concerns:

• The seat back has fallen off and we do not yet have a replacement
• We are still unsure of the power of the motor. It may not be enough to move the kart.

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Yes, we are ahead of schudule for building our box and laying out where we would like to put the pieces. We intend on having the box built before the end of the month.

continued work on doorbell, 80% done

off track on deadline, will need a bit more time to connect everything and test

Concerns:

nothing currently

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Updates:

• Preliminary design for the motor and the back (and some "bloopers"!)

Concerns:

• The seat back has fallen off
• We need to find some more parts and maybe redesign the back

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waiting on parts, other steps have been completed besides one part, still on track

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breaking another part again

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We finished the breadboard radio, however we still could not receive a signal. We've ordered ceramic disk capacitors, which were included in the schematic we were basing our radio off of, and that may fix the problem. If that doesn't work, we'll try to measure the frequency it's broadcasting at using the osciloscope.

Concerns:

There is a chance our radio is broadcasting successfully but the signal is too weak to be received or is on a frequency most receivers can't tune to. We can most likely solve these problems, but it's hard to figure out what the issue actually is.

Updates:

• Finished the back seat

Concerns:

• The steering loosens up over time. We aren't sure of a fix
• We need to meet as a group of 4 and decide how to design the back

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The reciever was completely broken, so I had to order a new one, this will set back the end date by a few days

We're currently working on constructing a new radio using a breadboard to give us more control. We're getting close to completing and testing it, but we aren't quite there yet.

Concerns:

We weren't able to pick up the signal with our last attempt, and there's a chance we still won't be able to even using the breadboard. While it will be much easier to make adjustments to the broadcasting antenna, there is a chance we still won't be able to find the signal. We'll work on that issue if it comes up.

Updates:

• We began constructing the steering:

There has been a major setback this week. Every time we built a new steering system, it would either break or not function properly.

Here is an example of steering we made. This design has far too much slack and the turning of the wheels does not respond quickly enough to input from the steering shaft.

Concerns:

• Steering is proving much harder to make than we originally thought.

  We may not have this done in time for testing.

Milestone update:

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Milestone update:

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Milestone update:

Milestone was to get all parts, almost have all parts, missing the reciever. Worked a bit on the board. Nothing should be different for end dates.

Concerns:

breaking a part

Milestone update:

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Milestone update:

Concerns:

• Construct the Steering shaft

• Attach a seat back to the chassis

• Ordered 10" Tire and Wheel with 5/8" Shaft Hole
• The wheels have arrived and the steering was attached

• We have decided to order the parts as needed
• Everything we need is arriving and in good condition

• Serious concern over getting the controller to work
• We may have to first make the kart work without the controller

• Constructed the first part of the steering

• Combined 4 6v batteries in series to get 24v
• Spun a test motor using the batteries

• We may set up the controller wrong and break it
• The motor may not arrive soon enough to test
• There is a chance we short-circuit the batteries

• Ordered the following parts:
• 24v Battery
• 24v Electric Scooter Motor
• Motor Throttle and Electrical Control Kit
• Began working on this very website

• None This Week!