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How to Build a Mechanical LEGO Piano Player

Final 12 months, after we wrote Genius LEGO® Innovations, we actually fell in love with constructing machines! Oh, we love all types of LEGO® constructing concepts, however there’s simply one thing enjoyable and satisfying about constructing a challenge that may actually DO one thing… like our LEGO® Sweet Dispenser and our LEGO® Safes (with a working lock and key).On this put up, we’re going to point out you how one can construct a mechanical LEGO® piano participant!One among our favourite tasks in Genius LEGO® Innovations (affiliate hyperlink) is a drummer who actually performs the drums. It’s one challenge that we’ll by no means take aside, that’s for certain! We’ve been serious about constructing different instrumentalists, and I made a decision the opposite day to construct a LEGO® piano participant. I’m actually excited to point out you this challenge as a result of the design is straightforward, and I feel that the majority youngsters will be capable to construct it with the bricks they’ve readily available. There are just a few Technic components, however not many.

How to build a Mechanical LEGO Piano Player

How the Mechanical Piano Participant Works:There aren’t any gears within the mechanism for this LEGO® piano participant. In reality, the mechanism is sort of easy! The deal with on the facet of the bottom is linked to a rod with two cams on it. The cams are positioned in order that one is up whereas the opposite is down. Flip the deal with to rotate the cams. The cams elevate the sunshine grey Technic beams up and set them down once more, which lifts the piano gamers arms up and down!Engineering Vocabulary: Are you questioning what a “cam” is? A cam is a wheel that rotates on an off-center axis. On this case, our cams are 1 x 2 Technic liftarms. The axis is on one finish of the liftarm in order that it rotates off heart. Because it does, it creates movement by pushing a rod (one other liftarm) up and down.Wish to see the piano participant in motion? Right here’s a video that reveals the way it works! I’ve additionally included views of how we assembled the mechanism. You’ll nonetheless want the constructing directions under, however this video ought to be useful.Construct a complete LEGO® band! For those who like this piano participant, you’ll additionally wish to try our drummer. This one is motorized, and he actually performs the drums! So cool.You’ll find the directions for the dummer in our e-book Genius LEGO® Innovations with Bricks You Already


Able to construct your personal mechanical LEGO® piano participant? Comply with the constructing directions under.Be at liberty to make substitutions in the event you don’t have the precise bricks proven. This can be a very versatile


Step 1: Seize a 16 x 16 plate, or two Eight x 16 plates. Construct two rows of bricks across the perimeter, with a 4-stud hole within the second row as proven. Place bricks contained in the sq., as proven.

Step 2: Add two 2 x 2 bricks and two 1 x Three bricks to the bottom as proven. This may create a channel for the rod and cams.

Step 3: Collect the bricks proven for constructing the cams. The axles are 10 studs lengthy (the black one) and 5 studs lengthy (the sunshine grey one).

Step 4: Use a Technic axle connector to attach the 2 axles. Then slide a 1 x 2 Technic brick with 2 holes onto each.

Step 5: Seize two Technic bush and slide them onto the sunshine grey axle. Then add a 1 x Three liftarm that has two axle holes and a pin. The pin makes a pleasant deal with for tasks like this.

Step 6: Slide a 1 x 2 liftarm with an axle gap and a spherical gap onto the black axle. Ensure the axle goes by the axle gap – you don’t need the liftarm to have the ability to spin freely. Then slide on a 1 x 2 Technic brick with two holes and a second 1 x 2 liftarm. Be sure that the liftarms are oriented in reverse instructions in order that one can be up whereas the opposite is down.

Step 7: Connect this rod and cam meeting to the bottom.

Step 8: Add two extra rows of bricks to the bottom.

Step 9: Collect the bricks proven. These can be used to stabilize the Technic liftarms that transfer the piano participant’s arms up and down.

Step 10: Make a stack of three 1 x Four bricks. Then connect a 1 x Four brick and a 2 x Four brick to a different 2 x Four brick as proven. Place a 1 x 2 brick on high of one other 2 x Four brick.

Step 11: Use a 2 x Four brick and a 1 x Four brick to connect the two x Four brick (with a 1 x 2 brick on high) to a 1 x Four brick with an area in between. These shapes look bizarre, however they do serve a goal!

Step 12: Add a 1 x 6 brick as a connector.

Step 13: Add the stack of three 1 x Four bricks to the bottom. It’s going to sit proper subsequent to the cam.

Step 14: Add the brick meeting to the bottom. There ought to be a gap above every cam. Verify to see that your deal with nonetheless turns simply.

Step 15: Now we are able to shut up the ground. Add plates on high of the bottom. We used two 6 x 16 plates, a 6 x Eight plate, a 2 x Four plate, and 4 1 x 2 plates. (The 4 1 x 2 plates have been my 10 12 months previous’s doing… thanks rather a lot, son! Couldn’t discover a 2 x 4? Ha ha.)


Step 16: Construct these two shapes out of bricks. Any shade will work, though I like tan. White could be good too.Step 17: Flip them 180 levels. Then plate one brick assemble on both sides of the machine. The holes ought to line up with the opening above every cam.Step 18: Drop a 1 x 11 Technic liftarm into every gap in order that they relaxation on the cams. Insert a black pin within the second gap from the highest on each. Word that the liftarms are NOT hooked up to something! They’re simply sitting there.Step 19: Now, construct a piano. Ours is simply primary bricks and plates. The “sheet music” is hooked up to the piano with a brown bracket.Step 20: Then construct a piano bench.Step 21: Now assemble your piano participant. You may construct it like ours, or give your particular person his or her personal look! We used Three x 5 L-shaped liftarms for the arms. The physique of the piano participant must have a Technic bricks on the high so to connect the arms utilizing a lightweight grey pin. The sunshine grey pins permit joints to maneuver freely.Step 22: You may make the pinnacle swivel by attaching it to a 2 x 2 tile with one stud on high. It’s enjoyable to have the ability to pose the pinnacle.Step 23: Connect your piano to the bottom of the machine. It ought to sit proper up in opposition to the tan bricks.Step 24: Now connect the piano participant and bench to the bottom. Every arm ought to relaxation on high of one of many black pins. For those who place a 2 x 2 spherical brick (or a daily brick) underneath every nook of the bottom, it is going to make it simpler to show the deal with.Then your piano participant is all executed! Flip the deal with and watch him play a music!NEED MORE LEGO IDEAS?You’ll find extra LEGO® machines to construct on this put up: 10 LEGO STEM Initiatives that Each Child Ought to Attempt

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