Monday, November 30, 2015

Simple Car - Can be built from Only Parts in EV3 education expatiation (with instructions).

I built this "normal car" because I wanted to make a car that just uses the parts from the Lego® Ev3 Expansion Set 45560
.

Data Sheet:
Power: Two Handles on the back of the car.
Drive: Yellow handle on the back.
Parts: All parts are from the Lego® Ev3 Expansion Set 45560 - New


This car was built assuming that power came from two cranks on the back of the car. The yellow for drive (bottom) and the blue for steering (top).

This is the "steertrain" that transfers the power from the blue knob to the steering. It goes from the blue knob down some axles to a set of 8 tooth gears. This changes the rotational direction so that when you rotate the blue knob, the car will turn right.

Close-Up of the gearbox talked about above.
The drive knob just spins the differential that spins the wheels

Build it Yourself:
Parts you will need (they are all in the  Ev3 education Expansion set)
Build with Boston:

Saturday, November 28, 2015

Steer-Crazy Car. Unpredictable Madness.

I built a crazy Lego® Technic Car. It is made to steer left and right over and over. It ended up steering like crazy, hence the name "steer-crazy".

Data Sheet:
Power: 1 medium motor
Drive: Shares the M motor with steering.
How this car works:
There is a motor on the left side that powers the differential. The differential powers the wheels. The other side of the differential is another 20 tooth gear that goes to the steering system.
The power comes in past the red piece and goes through a set of four tooth gears and then there is a gear reduction so the car steers less often.  Then It rotates a 40 tooth gear that has two prongs that stick out. A rod moves as these prongs pass, that rod is connected to the steering by a rubber band. Thereby steering the car.


Conclusion

I thought this car went pretty well. I did not have enough space to allow the car to ride very far, but I did get the car to turn once or twice. I had another problem, the large gear that I used to move the lift arm sometimes made the lift arm gear stuck. This was a big problem because it kept it going back to the "not steered" position. The goal was to build a car that could steer and drive with the same motor. I believe that that made it a success.

See it in action:


Building instructions:
You will need these parts:
Watch the video!






Friday, November 27, 2015

Review of Brick Measuring Tool V1.1 Created By Tom Alphin

The brick Measuring tool by Tom Alphin is a great little tool that allows you to find the lengths of beams. I like using it for my Lego builds.



Go to his website to download them
http://tomalphin.com/2014/02/lego-ruler-and-sorting-tool.html

My Lego® Technic Storage System Nov 2015

I have the LEGO® Mindstorms EV3 31313Home edition set, LEGO® Technic Power Function Accessory box (8293)Lego® Ev3 Expansion Set 45560, and some random Technic parts from some Sets. I am using for storage the Storage Box that the Education Expatiation Set came, a Keter 17186819 18-inch Cantilever Organizer made for storing tools, Glad Food Storage Containers Mini Round 4 Ounce 8 Count
 and a 6 court box.

Some pictures and descriptions of my storage system:
All of My Glad food storage containers that are storing all of my pegs. Sorry about my knee.

Bottom Section of My Keter organizer. The things that are in this organizer are: (Left to right) wheels, Decorate Elements, More Wheels, Gears, Large Curved Lift-arms, Frames.
The top of my Keter organizer (left to right) small wheels, half a stud wide parts, small decorate elements, suspension/steering arms and their connectors, Knobs, Long Axles, Bushes, Small 90 degree parts, 3M beams, Short Axles.

My whole Keter organizer all packed up.


Bottom of the education crate with the Glad Containers (that are storing my pegs), PF elements, and huge wheels.
Top of my education expatiation crate.
Half of my black friction pins in a glad container.
The Whole Collection all opened up for building.