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Kehillah Student page: Engineering Course

Weekly update table

Project Work this week
and material added to page.
Concerns, hurdles
Light Follower
Sanjay Raj
Updated: Feb-23-2018

Concerns:


=====

Dr. Baharav comment: Goal is to have the photoresistor give reliable reading of light/dark. By March-2nd let's have at least one photoresistor give a continous reading of light level. If this is too simple, we do need to have 4 photoresistors connected, so you can proceed to this. But at minimum we need a photoresistor reading which is reliable and consistent.
Arcade
Nathan F
Nathan L
Updated: Feb-23-2018

Concerns:


=====

Dr. Baharav comment: I think you are moving along ok. Now you have the buttons.Well done so far!.
Doorbell 1
Benny
Updated: Feb-23-2018

Concerns:


=====

Dr. Baharav comment: On track!. See if you want a 3D printed case for the bell/reciever block.
DoorBell 2 (Ariel)
Ariel
Updated: Feb-23-2018 On track, in Israel.

Concerns:


=====

Dr. Baharav comment: On track, in Israel.
FM Transmitter
Zack, Jake
Updated: Feb-23-2018

Concerns:


=====

Dr. Baharav comment: You are now doing the breadboard version. If this one deosn't work, we have a 30MHz scope (osciloscope) sitting in my room, on the floor, next to the window. This can be used to measure oscilation, voltage, current, etc. Let's try and debug the breadboard version before jumping on to on to a different design. On track
Go Kart
Ben Yeffet
Jeffrey Robinson-Wrobel
Jason Flaster
Jake Cimring
Updated: Feb-23-2018

Concerns:


=====

Dr. Baharav comment: Let's make sure we are moving beyond the steering. We also have the motor, throttle, and drive-train to put in. By March-2nd let's have some mechanism to steer. Even if it is TWO handles that the driver pull/push directly on the front-wheel axel. This will enable part of the team to move forward to work on the motor, while others still try to get a better steering solution.


======



Past weeks updates

Project Work this week
and material added to page.
Concerns, hurdles
Light Follower
Sanjay Raj
Updated: Feb-09-2018
  • The light sensors will come next week.
  • Meanwhile, I am working on getting the pan and tilt moving more accurately.
  • Concerns:

    Arcade
    Nathan F
    Nathan L
    Updated: Feb-09-2018
    We are assembling the buttons and trying to get them to connect to the rasberry pi. We are still trying to make the monitor work with the games.

    Concerns:


    The monitor works in every mode accept for when we go into the games and instead of posting to the small monitor it goes to HDMI even when their is nothing connected.
    Doorbell 1
    Benny
    Updated: Feb-09-2018

    Concerns:

    DoorBell 2 (Ariel)
    Ariel
    Updated: Feb-09-2018
  • Fixed the design for the doorbell base. It is currently printing, and appears to be working fine. Once it is printed I will need to align it with my receiver base in order to see if it fits properly.
  • Looking into making a new pushbutton that will look cooler than the default, but other than a little searching, not much progress has been made.
  • Concerns:

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

    FM Transmitter
    Zack, Jake
    Updated: Feb-09-2018

    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.

    Go Kart
    Ben Yeffet
    Jeffrey Robinson-Wrobel
    Jason Flaster
    Jake Cimring
    Updated: Feb-09-2018

    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.



    ======

    Project Work this week
    and material added to page.
    Concerns, hurdles
    Light Follower
    Sanjay Raj
    Updated: Feb-02-2018

    Milestone update:

    I have the pan and tilt with the servo motors moving and rotating.
    Now I need to have it track the sun.


    Here is the link to the video:
    Link to video

    Concerns:

    Earlier, I had the servo rotate 360 degrees at once using servo.write(), and that was too much, so I was worried that one of the motors were broken as a result. I will learn to not do more than 180 for next time.
    Arcade
    Nathan F
    Nathan L
    Updated: Feb-02-2018

    Milestone update:

  • We reached our intial milestone of having the monitor boot to terminal and configuring retroarch to work with HDMI monitor
  • Configured a remote to work with the emulator
  • Got an old super mario bros game to work with an hdmi monitor
  • Milestones
  • Concerns:

  • small montior is not supported currently
  • emulationstation only works on larger monitor via hdmi
  • Doorbell 1
    Benny
    Updated: Feb-02-2018

    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

    DoorBell 2 (Ariel)
    Ariel
    Updated: Feb-02-2018

    Milestone update:

  • Finished building the Receiver for the signal. A schematic is on the site
  • I can't test the receiver yet, as I'm missing the parts for the transmitter
  • I created a sketchup of the base for the transmitter, and then converted it to an STL file which can be found on my personal site. I have not yet printed the base, and do not know yet whether it is the right size.
  • Concerns:

  • The parts for the Transmitter are taking far too long.
  • FM Transmitter
    Zack, Jake
    Updated: Feb-02-2018

    Milestone update:

    Completed construction of FM transmitter. We're having issues receiving the signal, and are attempting to debug.
    FM Radio

    Concerns:

    We may have incorrectly assembled the radio, but it's very hard to tell what the problem is. It may take a long time to debug. We're considering starting over and using a breadboard, which will be easier to control.
    Go Kart
    Ben Yeffet
    Jeffrey Robinson-Wrobel
    Jason Flaster
    Jake Cimring
    Updated: Feb-02-2018 Milestone Update:
    • 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

    ======
    Project Work this week
    and material added to page.
    Concerns, hurdles
    Light Follower
    Sanjay Raj
    Updated: Jan-26-2018
  • Still waiting for materials, I expect them to arrive on January 26, 2018.
  • Materials have officially arrived!
  • Link to page: https://ricardo.sequeira.com/pan-and-tilt-arduino

  • From Ricardo's website: Code, and images
    Arcade
    Nathan F
    Nathan L
    Updated: Jan-26-2018
  • Presentation
  • The video output format is not usually supported by retropi and we do not quite know how to fix the problems this is creating.

  • Getting the monitor to work without fail.
  • Doorbell 1
    Benny
    Updated: Jan-26-2018
    DoorBell 2 (Ariel)
    Ariel
    Updated: Jan-26-2018
  • Still waiting on a few materials.
  • Began working on prototype, see website for code and pictures
  • I made it so that pushing a button plays star wars... now to make it work from a distance
  • I succesfully embedded a video in my HTML
  • FM Transmitter
    Zack, Jake
    Updated: Jan-26-2018
    Go Kart
    Ben Yeffet
    Jeffrey Robinson-Wrobel
    Jason Flaster
    Jake Cimring
    Updated: Jan-26-2018
    • Constructed the first part of the steering
    • Steering Base
    • Combined 4 6v batteries in series to get 24v
    • Spun a test motor using the batteries
    • Motor and Batteries in Series
    • 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


    ======

    Project Work this week
    and material added to page.
    Concerns, hurdles
    Light Follower
    Sanjay Raj
    Updated: Jan-19-2018
  • Presented the project idea. link to slides, and am working on my personal page. I am still waiting for materials, but they should come soon.
  • Link to some video of the work?
  • Arcade
    Nathan F
    Nathan L
    Updated: Jan-19-2018
  • Google Slides
  • Having a working screen so that we can see the terminal
  • Begin working on the script to hook controllers
  • Doorbell 1
    Benny
    Updated: Jan-26-2018
  • obtained parts, physical component started
  • Not all physical components are there.
  • DoorBell 2 (Ariel)
    Ariel
    Updated: Jan-19-2018
  • presented the project idea.
  • link to slides.
  • began working on personal page.
  • Waiting for materials.
  • Slides
  • FM Transmitter
    Zack, Jake
    Updated: Jan-19-2018
  • Presented idea for FM radio transmitter. Link to presentation included.
  • Researching construction of FM transmitter. Compiling parts list.
  • Concept Presentation
  • Go Kart
    Ben Yeffet
    Jeffrey Robinson-Wrobel
    Jason Flaster
    Jake Cimring
    Updated: Jan-19-2018
    • None This Week!

    2017 2nd Semester projects

    1. Light Follower
    2. Arcade
    3. DoorBell 1 (Benny)
    4. DoorBell 2 (Ariel)
    5. FM Radio
    6. GoKart


    7. Shopping list


    =================

    2017 1st Semester projects

    1. Binary clock
    2. Line Follower
    3. Theremin
    4. Safe
    5. Signage
    6. Motors


    ==================================


    Questions/Comments: Zbaharav at Kehillah dot Org or Zachi at Baharav dot Org .