Mobile Pneumatic Multi Arm V4

Young humanoid wanted to continue his MPMA (V1, V2, V3) series - but this time, he wanted to use a real mechanical multiplexor.  The multiplexor, in theory, was quite simple.  Two motors moved up and down on a chassis of beams.  This actuation was powered by the third NXT motor.  The motors could move into three positions.  On each position, the sixteen-tooth gears on the motors meshed with the sixteen-tooth gears on the sides.  Thus, the robot could use a total of six functions from three motors, although only a set of two functions could be driven at any one time.  The first set drove the treads, giving MPMA V4 the most maneuverable drive base in the series.  The second set drove two pneumatic switches - one for the arm's cylinder, one for the claw's cylinder.  The final set drove the arm rotation on one output and pneumatic pumps on the other.  MPMA V4 is considered by young humanoid to be the best robot in the series to date.

Mother's Day 2012 Project

Young humanoid wanted to build a project for mother humanoid, and decided to build a scissor lift.  The robot rode on tracks forward, before raising its scissor lift while playing a song.  Young humanoid left out one side of the top of the lift, allowing a message to effectively "pop up" so mother humanoid could easily read it.  The robot would then wait a few seconds, lower the lift, and then back up.

Orange Car

Orange car was the result of young humanoid's want to enter an unofficial NXT building challenge with the theme of vehicles.  Young humanoid used three motors - two to power a rear differential, the last in a complex gear system that steered the front wheels.  The entire car was remotely operated through a second NXT on a LEGO handlebars construction, inspired by Per_and_Emil's project Rally simulator - HAP 2.0.  Tilting the handlebars forward, reverse and sideways would result in proportional control of the operation of the car for speed and turning. 

Experimental Walker

Young humanoid decided one day to implement a new walking mechanism, inspired partially by teenager101's project RC Ferarri Enzo (in white).  The resulting robot was an articulated quadruped, that, unfortunately, had slipping gears when turning with too much resistance.

RIS 2.0 Class Bot

Having one of his NXTs occupied in his Vending Machine III, young humanoid decided to construct a simple RIS 2.0 robot that the children in his class could construct with his step-by-step instructions and guidance. 

NXT Class Bot

Young humanoid was requested to formulate a robotics class for children.  In order to make it hands-on, he revisited his Simple Robot as a simplistic platform which the children could build themselves along with his step-by-step instructions and guidance.  However, he modified the castor wheel.

RIS 2.0 Train Bot

With Christmas approaching, young humanoid wanted to build a machine that navigated around the Christmas tree on a wooden track.  The result was the very simple RIS 2.0 Train Bot, which was powered by a single motor.  Young humanoid ended up having to add a rubber band to one of its drive wheels to supplement much-needed traction for getting around rough parts in the twisting track.

Candy Machine III

Young humanoid had done it.  He had constructed a four-item vending machine with coin differentiation (quarter, nickel, penny, dime), coin return, coin sorting and change.  All using one NXT, and one PF battery box.  Young humanoid covered over the front of the machine with clear plastic sheet that allowed users to view the products, which fell from four independently operated treads.  The user could decide which product he wanted from the on-screen interface, and then enter in any coin combination he desired.  Then, the applicable change would be calculated and dispensed.  The largest problem with the machine was the frequent jamming of the coin slot.  However, young humanoid considers this his largest (well, that's no question) and one of his best projects yet.

Mole Day Project 2011

Young humanoid was required to make a Mole Day (October 23) project for one of his classes.  Mole Day celebrates Avogadro's Number, 6.022 x 10^23.  Of course, he immediately turned to NXT.  Constructing a simple quadruped in the form of a horse, young humanoid also implemented a simple motor synchronization mechanism inspired by the mechanism on Laurens Valk's NXT 2.0 bonus model Manty.  A mol, named "Sir Mol" was mounted on top, and autonomous navigation was programmed.

Amphibious Explorerbot

Young humanoid, seeing the Explorerbot challenge on NXTLog, was inspired by one of the award categories - the All-Terrain explorer.  Young humanoid decided to make a robot that was truly all-terrain - both land and water!  Young humanoid constructed a V-shaped wheel base frame utilizing six NXT 1.0 wheels and two 4X4 Off-Roader wheels on each side.  He added two balls on each side to supplement the robot's buoyancy.  In order to challenge himself and raise the electronics out of the water, young humanoid hinged the robot in the middle and added a device to automatically flip the wheel sets so that they faced downward.  Two paddle wheels, each powered by its respective wheel set, moved the robot in water.  Although it was fast on land, the robot was unstable and quite slow in water.  However, young humanoid was quite happy with it.

Offroad Explorer

Young humanoid again teamed up with his friend 058606 to build an off-road machine.  It featured four PF XL motors, each geared down 5:1.  A light frame, outside-mounted battery boxes to reduce sag and an actuated center completed the machine, which was driven by the PS2-Nx interface. 

Candy Machine III Coin Modules Final

Young humanoid then rebuilt the two modules, making them sturdier and more compact.  Suddenly, he realized that he could stack the two on top of each other - the coins coming from the differentiation unit could simply falli into the sorting unit!  Doing so also allowed the dispensed change to become much more accessible.  Now, all young humanoid had to do was build a vending machine around it..

Candy Machine III Protoypes Combined

Young Humanoid then worked with his friend 058606 to combine the two prototype modules and make the dispensing coins (from both the coin return and the change dispenser) accessible.  It worked, and young humanoid decided he was ready to build the final version.

Candy Machine III Coin Sorter and Change Dispenser Prototype

Young humanoid then made a mechanism that would sort the coins by denomination and dispense them as change as needed.  After attempting rotational storage, young humanoid decided on a sliding divider over a smooth base of beams.  A ramp delivered coins from the differentiation unit to the sorting unit.  Coins could then be dispensed by moving the desired coin stack over a wheel on bottom, and then rotating the wheel to dispense the coins one by one.

Candy Machine III Coin Differentiation Prototype

Wanting to improve over his old Candy Machine, young humanoid began a series of prototypes for a new one.  This prototype utilized an idea young humanoid saw online for coin differentiation.  The coin would be dropped in the slot and detected by the light sensor before falling into a bucket.  The near wall of the bucket was connected to a touch sensor.  A motor would move the touch sensor, and thus the wall, into the bucket, pushing the coin against the far wall.  When the coin could not be pushed further, the advancing wall would then press the touch sensor.  The encoder value of the NXT motor moving the sensor would then be read.  A smaller coin would result in a higher value, because the motor had to move further before the sensor was activated.  Thus, values could be calibrated, and the machine could determine the coin that was placed into it.

PF Explorer

PF explorer was probably young humanoid's best off-road robot to date.  Utilizing four PF XL motors for drive, the robot could easily traverse over grass with is Mobile Devastator wheels.  The robot featured a motorized actuation in the center, thanks to inspiration from some of NXDave's inventions, such as A.R.T.  A touch sensor bumper allowed object detection, along with a swiveling ultrasonic sensor that detected the furthest path upon detecting an obstacle.  This was inspired by swaziboy's Smartbot series.  A compass sensor on the back kept the robot aligned along a heading, providing it was not too far off the heading to begin with.

One-Motor Synchro Drive

Seeing funny_fish's 1 Motor Synchro Drive on NXTLog, young humanoid wanted to build one.  However, while funny_fish used a floating worm gear, young humanoid wanted to use a differential unit.  The resulting 3-wheel synchro drive worked quite well, although it was a bit slow. 

Please don't blame me for the terrible picture.  It's young humanoid's fault.

4-Bar

Young humanoid wanted to enter an unofficial challenge hosted by MySnailEatsPizza on NXTLog.  The challenge involved the manipulation of cups filled with balls, and climbing over barriers.  Young humanoid's entry, 4-Bar, used a 4-bar linkage to keep the cups level when lifting them.  The motor used to lift the claw was also connected to the claw actuation itself.  Thus, the claw could close upon a cup before lifting it up.  This allowed the total number of motors in the robot to stay at three, with the other two operating the skid-steer base.

X-12

About time.  Well, young humanoid took a bit of a new direction when building X-12.  He decreased the number of motors and electrical elements, limiting himself to only two NXT Intelligent Bricks and six motors.  He started with a properly sturdy, tracked base equipped with a raised front.  The NXTs were then mounted, then the upper section.  Young humanoid built in two arms which raised together and activated a switch to close their pneumatic claws.  The final motors operated the pneumatic pump, rubber band gun, and rotating head.

Young humanoid programmed X-12 with NXC.  Placing tape stretching in a figure eight around his house, young humanoid decided that X-12 would follow the line to access different parts of the house.  Young humanoid then placed different numbers of pieces of tape next to the main line in each area of the house.  X-12 could count the amount of strips and then decide what area of the house he was located in.

Unfortunately, young humanoid never fully completed the programming of X-12.  Shameful!

Hailfire Droid

Seeing many Hailfire droids on NXTLog, young humanoid wanted to make one for himself.  The resulting droid could either roam autonomously at high speed, or be remote-controlled.  The dual-firing Zamor sphere cannon on top was inspired by brdavis42's project Hailstorm.

One-NXT Four Wheel Drive

Young humanoid, seeing this great project by canie on NXTLog, wanted to use his differential idea to make a four-wheel drive vehicle - one that used only the pieces in the NXT 1.0 kit!  It proved quite a challenge.  Young humanoid soon found that implementing both steering and a differential (one based around the turntable gear) required a lot of gears, and soon abandoned the project.

Four Wheel Drive Car Super Addition V3

Young humanoid wanted to improve on his Four Wheel Drive Car Super Addition (FWDCSA) series (V1, V1 Final, V2).  This time, young humanoid used only NXT motors.  Three drove the four wheel drive, the fourth operated the two-gear transmission, and the fifth gave it four-wheel steering on its independent suspension modules.  The final motor port provided front lights, and light sensors were used for rear lights.  While the gears did not slip (but he didn't drive it that hard either...) the single 8-tooth gear accepting power from the three drive motors did get inevitably bent. 

Candy Arcade Game

Young humanoid, wanting to raise money for his class at school, constructed a candy arcade game inspired by mindstorms-teen's entry into the People's Choice challenge.  It used three motors - one to move the claw along the y-axis, one to move it along the x-axis and the third to pick up and let go the candy.  The entire mechanism was activated by putting a coin into the slot on front, and then controlled using an acceleration sensor joystick and the orange button on the NXT Intelligent Brick.  While it worked pretty well, the limit switches for the "home" positions of the claw tended to bend out of the way or pop off.

NXTIzed Buggy

After looking through TECHNIC instructions on the LEGO website, young humanoid decided to build a buggy and motorize it with the NXT.  The ending buggy was driven by one motor and steered by the second.  It was remote-controlled by a Bluetooth program running of of young humanoid's computer.

NXTIzed 4X4 Off-Roader

Young humanoid took a different approach at "NXTIzing" (thanks nxtbean for the term) his 4X4 Off-Roader.  Young humanoid rebuilt the chassis from the instructions, but modified it along the way to accept the NXT motors directly driving the front and rear differentials.  Young humanoid then added the steering motor and bodywork.  The resulting model had no gear slip, but poor steering radius (as was true in the original model)

FLL 2010 Robot Idea

Young humanoid, seeing the 2010 FLL game, decided that it might be advantageous to have a mechanism that could shift the attachment motor to two configurations - parallel and perpendicular to the drive wheels.  And thus, he constructed up this concept mock-up.

Biped Idea

Experimenting in an attempt to construct a two-motor biped, young humanoid stumbled upon this idea.  The motors, connected to the central frame with gears, moved in an ellipse.  As they moved up, they would supposedly push a beam that tilted the NXT Intelligent Brick on top over the other leg.  The center of gravity would thus be shifted, allowing the leg to continue to move up off the ground and step forward.  Unfortunately, the weight shifting mechanism did not work, and the idea was abandoned.

FLL Bad Cell Destruction Idea

Young humanoid, as a member of an FLL team at the time, realized a potential way to flip the cells in the 2010 FIRST LEGO League Robot Game using one motor.  This is just a mockup of his idea.  Supposedly, the mechanism would lower, and the slanted beam on top would push the cell into a horizontal position.  The mechanism would then raise, and the yellow beam on bottom would push the cell into a horizontal position.  While it worked on the mockup, the mechanism would not work on the actual cells due to their thicker profile.

BlazingFire

Young humanoid, seeing the NXTLog Pet building challenge, wanted to build another dragon.  BlazingFire included two NXT Intelligent Bricks and six motors.  Four were dedicated to moving the rigid legs, which could propel the dragon at a very slow pace.  However, the weight distribution allowed the dragon to rear up on its hind legs, upon which the left foreleg could lift and open the pneumatic claw.  Placing a hard object in the claw would activate the touch sensor upon closing, and the dragon would then go through an imitation of eating the object before lowing his leg, letting it go, and returning to all fours.  BlazingFire also included a behavioral program that allowed it to raise up if its "petting plates" were touched enough in a specified period of time.

NXT Ultra Pinball Machine III

The third installment of his NXT Pinball Machine series, this project provided some unique challenges for young humanoid.  Firstly, he wanted to build it all out of LEGO (or DUPLO) elements. Secondly, he wanted to make a ball launcher mechanism and realistic flippers, inspired by legothom's project Space Pinball and another in the book Building Robots with LLEGO MINDSTORMS by Ferrari, Ferrari and Hempel.  A brace under the playing board provided the means with which to hold the bricks in place, as well as the machine's feet.  Young humanoid implemented two scoring systems - the touch sensor and top and the light sensor to the left.  A RIS light sensor detected when the ball had escaped through the flippers and entered the launcher again.  Young humanoid wrote a NXC program for the machine, which ended up working rather well.

4X4 Off-Roader Spinoff

Having received the TECHNIC 4x4 Off-Roader as a gift, young humanoid wanted to motorize it with the NXT.  However, the exiting drive train proved too weak to move it around.  So young humanoid constructed a custom chassis.  One NXT motor drove the machine for four wheel drive, the second provided four-wheel steering and the third shifted gears in a two-gear transmission.  Young humanoid then compacted the 4X4 Off-Roader's bodywork and put it on top.  Unfortunately, the gears were prone to slipping and the single motor did not provide enough power.  Strangely, moving the machine forward resulted in more stress - eventually to the point of slippage - on the drive motor, but when it was reversed, the stress would be relieved.  Young humanoid is still mystified as to why.

Self-Pumping Pneumatic Car

Young humanoid, while browsing NXTLog, came upon ski4Jesus' project pneumatic car.  Eventually, young humanoid wanted to build one.  Young humanoid used two cylinders to power the rear wheels.  One NXT motor operated the dual switches using a mechanism copied off ski4Jesus' project.  The second motor pumped air, while the third steered the front wheels.  Although a fun experiment, the car exhibited both low speed and low torque.

Off-Roader

Young humanoid teamed up with his friend 058606 to build this robot.  One NXT motor turned the differential system that rotated the rear wheels, the second turned the front wheels, and the last operated a differential unit that operated the front claw.  The entire thing was remote controlled using the PS2-Nx interface.

Compact Four Wheel Drive Car

Inspired by some of the projects by victor288596, young humanoid set out to make a four wheel drive with three differentials.  Using one motor to drive the robot and another to give it four-wheel steering, young humanoid formed a compact four-wheel drive that automatically avoided obstacles.  Unfortunately, it bent LEGO pieces when the robot turned.

Vacuum Cleaner Robot

Young humanoid constructed an automatic vacuum robot as a final project for one of his classes.  It featured rear-wheel drive with castors in front.  Young humanoid braced the cleaner onto the LEGO elements in several points and added wheels on both sides of the motors to reduce sag.  A light sensor was added to the end of the suction tube to follow lines, as was a touch sensor attachment to follow the wall.

Wheel Droid

Young humanoid, upon receiving the large Mobile Devastator wheels, wanted to attempt constructing a robot with a profile within the diameter of the wheel.  While the propulsion system was adequate, young humanoid also mounted an automatic rubber-band gun on top.  Unfortunately, this upset the weight balance, making proper operation of this robot infeasible.

FlyingShadow

Young humanoid wanted to build a dragon in a color that nobody on NXTLog had done before.  And thus came FlyingShadow, a simple little quadruped with opening mouth.  Unfortunately, the walking mechanism caused the robot to walk in circles until a leg broke off.

Mobile Pneumatic Multi Arm V3

Young humanoid wanted to continue on his MPMA (V1, V2) series.  Young humanoid constructed a base like MPMA V1's that allowed it to move forward and turn in reverse, using one motor.  The other two motors operated differential units, three of which outputs went to switches, the last to a pump.  The first two switches operated joints in the arm, and the last operated the claw.  The entire machine was remote controlled using the PS2-Nx interface.  Unfortunately, the middle joint in the arm was pretty much useless, but young humanoid considered this his best installment in the series to date.

Four Wheel Drive Car Super Addition V2

As a sequel to his FWDCSA V1, young humanoid built a new vehicle inspired by his old one.  Powered by two PF XL motors and steered by one NXT motor, the car roved autonomously.  In addition, it featured four-wheel independent suspension.  Unfortunately, the drive gears skipped frequently and rendered the vehicle immobile while going over even small obstacles.

Bioarm

Young Humanoid's entry into the NXTLog robotic arm building challenge was a replica of the human arm.  It featured the shoulder lift, upper rotation, elbow, wrist, and claw. 

Monster Truck V1

Young humanoid took a new direction in building this truck, inspired by thedesigner1's project Monster truck.  He drove the front and rear wheels separately, each by one NXT motor and one differential.  The front set also featured steering, which was rotated by the third NXT motor, located underneath the hood.  Although its steering could have been improved, the final model drove quite well.  It was remote controlled using the PS2-Nx.

Hand Following Robotic Arm

Young humanoid, seeing another video online, wanted to make a hand-following arm.  Young humanoid used a compass sensor to track his hand's rotation, and an acceleration sensor to track his hand's tilt.  A touch sensor activated the claw.

The system worked marvelously.  Using a programming feature from another website, the robotic arm could easily track young humanoid's and was even precise enough to pick up a ball.

Mobile Pneumatic Multi Arm V2

Young humanoid wanted to work on his MPMA series.  He decided that if both tracks could only rotate forward but were powered by one motor each, he would have a robot that could turn but still have dual-motor power.  To accomplish this, he directed each motor into a differential unit.  The second output for each of the two units cycled a pneumatic switch.  The third motor was attached to a  floating worm gear (thanks to TooMuchCaffeine's design) which powered three pumps with one output, and a third switch with the other.  MPMA V2 was disappointing.  Its base was weak, it was not very maneuverable and its compressor was slow (possibly due to a damaged motor).  Young humanoid never implemented a use for the third pneumatic switch.

Red Car

In the anticipation of getting some new red pieces, young humanoid built a car with yellow bodywork.  Once his red pieces, young humanoid switched them in for the yellow.  The resulting car was driven via Bluetooth by a second NXT and acceleration sensor to sense tilt, which determined the direction and speed of the car.

Great Ball Contraption II

In the second Great Ball Contraption (GBC), young humanoid went much bigger.  He implemented two separate pathways.  The first (on the right side in the photo) featured a ball elevator, ramps, a cart, and a final ball lift to bring the ball back to the common path.  The second (on the left) featured two sets of moving treads and a catapult.

RIS 2.0 Zamor Tank

Young humanoid built this simple, skid-steer, Zamor sphere-firing tank with RIS 2.0.  It could be remote-controlled or run a NQC program that young humanoid never bothered to finish. (The negligence!)

Stand Up Bot Castor

Expanding again on his and m1n1f1g's Stand Up Bot series (V1 and V3, V2), young humanoid added a castor wheel (from another website) in the rear and a RIS light in front.

NXT Jack-O-Lantern

Halloween was coming, and young humanoid knew what he would do.  He carved a Jack-O-Lantern and outfitted each of the letters in "LEGO NXT" with a PF light or NXT light sensor.  Controlled by an external NXT Intelligent Brick, the lights would light in a sequence, accompanied by sound effects.

A Super-Scary Haunting Link...

This one also requires a link.
http://us.mindstorms.lego.com/en-us/Community/NXTLog/DisplayProject.aspx?id=5eb90550-0618-4147-bb86-8f0bcd3270d2
Enjoy.

Truck

Young humanoid, discovering that the LEGO website held instructions for many of its sets, decided to build a TECHNIC set and then motorize it with the NXT.  He decided on a simple B-Model in the form of a truck.  Inspired by this project (thanks nxt-teen), young humanoid programmed it to be able to detect when it ran into walls without any external sensors, and equipped it with a random navigation program.

4X4X4X2X2 Jeep

Young humanoid was at again.  I won't even bother going into his motives, I'll just list the details.  Four wheel drive, four wheel steering (front and rear wheel pairs steered independently), four wheel suspension (pendulum, independent on front and rear wheel pairs), two gear transmission, automatic door, three sets of PF lights.

Inconsiderately, young humanoid allowed a BIONICLE he unimaginatively named "Nickle" (brother of Bio the BIONICLE) to ride it, giving no thought to me.