15 Items ItemName: Lego Control Center, ItemType: Set, ItemNo: , Buy and sell LEGO parts, Set complete (but without pen) with instructions and box. Set number: ; Name: Control Centre; Also known as: Technic Control Centre; Set type: Normal; Theme group: Technical; Theme: Technic; Subtheme. Set # TECHNIC Control Center. Theme: LEGO Need building instructions? Submit instruction page . Please visit
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Click to download the LDraw file of this model. Model by Benjamin Wendl. Motorized Lifting and Grasping End Effector. Control Center The Control Center is the heart of this set.
There is a battery compartment on the bottom which holds 6 C sized batteries LR14 in series, producing a total of 9 volts DC. The Control Center has 3 color coded power outputs, each capable of driving a 9V motor. The yellow output is labeled “A-B” and is controlled by legl two yellow buttons on the left with the same labels. One buttons drives one direction, and the other reverses polarity and drives the motor the other way. The red and blue outputs are labeled “N-S” and “E-W”.
They are controlled by a 4 way control pad on the right. Movement of the control pad in a diagonal direction effectively controls 2 channels at once.
The red buttons in the center control programming. There are two memory sections which the Control Center can toggle between. Once a memory is selected, you can push Program and the system will record your inputs, including duration, and including pauses. When you are done recording the program, you push Stop and it is stored to memory, even if the unit is switched off. You can then play it back Go at any time, or you can control the system manually.
There is obviously some limit to the amount of memory on the system so it can only record a certain number of inputs, however, I have never found the limit. This little robot is used to draw crude images. It rides on two wheels and is insttructions by pins at the other two corners.
Each instructiobs is powered by an independent motor. Since the wheels can indtructions driven in opposite directions, the robot is capable of turning with zero radius. The computer image shows the drive system. Each motor drives a pulley via a belt.
The pulley then drives a 24 tooth crown gear through a worm gear, resulting in a reduction of about A Technic pen is clamped in the center of the assembly with a pair of threaded axles. The pen passes all the way through the assembly to the paper. A pair rubber bands pull the pen down against the paper. As you can see from the example image, it is pretty hard to draw anything coherent with this system, but it is fun to try.
The animation is not real-time, but the jerky motion seen in it is instrkctions indicative of how the robot really moves. The plotter is an exceptionally unique model, and a good simplification of how real servo motors driven by a programmable system might be used. The plotter is motorized to translate along two axes independently or together. Diagonal lines are possible by running both motors together, but tricky to do accurately. The remote control system has no means to lift the pen, so the plot is typically one continuous series of lines as shown in the example image.
The pen can be lifted manually. The drawing method using the plotter is similar to the popular toy ” Etch A Sketch “. Model by Benjamin Wendl Click for an animation of the plotter in motion.
Instructions For LEGO 8094 Universal Set with computer control
Pen and Paper The Technic pen is supported at the end of the carriage arm and clamped by threaded axles. A weighted element is used to push the pen down against the paper. The weight has an axle slot at one end. Since the weight is unbalanced, it tends to rotate the axle.
This force against the paper also tends to push the end of the carriage arm up. The weight can be rotated to lift the pen from the paper via the gear system. The weight drives a pair of 8 lfgo spur gears. The gears drive 24 tooth crowns.
On the same axle are a pair of pinions which engage rack gears on the pen clamp. The plotter even includes a means to secure the paper. A baseplate is used as a platform. A pair of toothed connnectors, shown in the image, are preloaded against the paper with rubber bands to hold it in inxtructions. This prevents the friction on the pen from dragging the paper around the platform.
Motorized Carriage The carriage is motorized to translate on two axes. The motors can be used independently to create horizontal jnstructions vertical lines, or together to create diagonal lines. The motors drive at roughly the same rate, so 0, instructionx, and 90 degrees are the only possible angles.
We’ll call the side-to-side motion the X axis.
The X axis motor has an 8 tooth spur gear on the output shaft first computer image and drives a 24 tooth spur gear. This drives through a set of pulleys using a belt. The belt system allows the gears to slip instead of stalling the motor when reaching the axis end stop. Next, a worm gear drives a 24 tooth crown. The next two stages of 16 tooth spurs and 14 tooth bevels are 1: Finally, an 8 tooth pinion drives a long set of rack gears.
Final reduction is about The whole carriage slides on, and is supported by, tiles on the base. It cannot slide far enough to become unbalanced and fall off the side. We’ll call the front-to-back motion the Y axis.
The Y axis motor has an 8 tooth spur gear on the output shaft second computer image and drives a 24 tooth spur gear. The next stage is a pair of 16 tooth spurs. Finally, a pair of 8 tooth pinions drive a long set of rack gears.
The whole carriage arm slides on, and is supported by, tiles on the main carriage. A second set of pinion gears engage the racks and prevent the cantilever moment from tipping the arm off the carriage.
Instructions for 8094-1 – Technic Control Center
This robotic arm performs the task of lifting 1×2 beams from a chute and elgo them into color coded bins. This is an excellent example of the complex functions which could be achieved with a relatively small variety of parts. The arm is capable of rotating, instrjctions, and opening the end effector. There are 3 motorized functions despite the fact that there are only two motors.
The method used to achieve this is quite clever and is described below. A base plate is used to hold all of the assemblies in the correct position relative to each other. Motorized Rotating Arm The arm can be rotated side to side using a motor contained in the fixed base.
The system is supported by the new Technic turntable which is able to support the unbalanced weight without falling apart. The motor drives a pulley through a belt hidden behind the turntable in the computer image.
This axle then drives a set of 8 and 24 tooth spur gears followed by a set of 16 tooth spur gears. Next a worm gear drives a 24 tooth crown.
Finally, an 8 tooth pinion drives the outer ring gear of the turntable which has 56 teeth. Final gear reduction is 3: Based on the motor’s loaded rotation rate of rpm, the rotation rate of the arm is about 1. The rate shown in the animation is leg faster than scale.
Click for an animation of instructikns arm rotating. Motorized Lifting and Grasping End Effector The motorized lifting and grasping end effector is practically magic. Both functions are controlled by a single motor mounted in the back of leto arm and used as a counterweight. The color coded computer image can be used to help explain the workings of the system.
When the arm is in the fully down position, the beams making up the 4 bar linkage are bottomed, which prevents the arm from descending any further. In this position, the path from the motors to the end effector is as follows. The motor drives an 8 tooth spur gear into a 24 tooth spur. Next comes a belt drive through a pair of pulleys to prevent the motor from stalling. The first blue axle then drives a 24 tooth crown through a worm gear, preventing backdriving of the system. A triplet of tooth gears follows.
A 24 tooth crown then drives a large 40 tooth spur gear on the third blue axle.
The next major gear reduction happens through the set of red and green 8 and 40 tooth spurs more about these later. This large gear then drives a 24 insgructions crown.
A pair of 8 tooth pinions then drive a pair of 16 tooth spur gears which rotate in opposite directions. Finally, two sets of 14 tooth bevel gears drive the liftarms which make up the end effector. Final gear reduction is