oracid

Eurobricks Knights
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About oracid

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    Actions speak louder than words
  • Birthday 08/01/1953

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    technic
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    mindstorms

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    https://www.youtube.com/@oracid/videos

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  1. Please note, the gray GeekServo are servos that can be used in 180° or 360° (see my video). The green GeekServos, with 3 wires, are continuously rotating. So usable with servo command. The red or blue GeekServos are simple motors with 2 wires. They cannot be used with servos command. Note that green Geekservos are far from having the power and speed of radio-controlled car motors. They are more intended for robotics. I can see that depending on a preference for servos or motors, we are more interested in the RC world or robotics. For me who is interested in robotics, I use Arduino with which I can do everything I like, but I frequently make a 4 wheels with 2x2 PF motors, (PU motors do not interest me), and in this case I may be interested in ordering 2 (or more) servos.
  2. Very good work ! May we see the inside ? Is it not possible to put a smaller battery inside the box ?
  3. This looks good ! About JST connectors, you mean this : Connecteur JST mâle + femelle pour batterie et lampe LED, fil de câble, jouets RC, 2 broches, 100mm, 200mm, 10 paires - AliExpress
  4. I am very interested. I discovered this subject recently. I read everything a little quickly, allow me to ask questions that may have already been discussed. What is the receiver and transmitter in the version with the receiver included?
  5. For now, the best is to start with a 8 DOF quadruped. This means 2 DOF for each leg. About the code, may be you can refer to this quadruped, 5BQE-2 Quadruped robot - new version - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums The code link is in video description, but I put it again here : 5BQE2-5Bars-Quadruped-with-extension/5BQE-2.ino at main · oracid/5BQE2-5Bars-Quadruped-with-extension · GitHub This code is in C but I say it is very simple. It is 100 lignes code, but forget the Inverse Kinematics function. That make less than 60 lignes code. - At the biginning, there is servos tuning. Then data of the gait. - Then, in setup() function, there is servos initialization. Forget it. - Then in the loop() function, you can see the call to the Walk() function. - Then the Walk() function itself, it is the main point. It allows to go forward, backward, turn left and turn right. Please, tell me which point you want to discuss about.
  6. I don't understand what exactly you want to do. Anyway, here is a board with an RP2040 (like the Pico) wich seems very interesting. Servo 2040 - 18 Channel Servo Controller (pimoroni.com)
  7. I don't understand your question. Why don't you refer to my code ? In each video, in description, you have the link of the code on Github. Of course, you can use Desmos. I don't know Desmos. It looks very similar to GeoGebra. I have done some draws with GeoGebra. Here a kind of thing you can do. Grab the point P with the mouse and move it. https://www.geogebra.org/m/cj6gsatg
  8. As you can see in this post, upper, there is no need to divide by G.
  9. In my quadrupeds the leg is a diamond. So with 4 equal sides. Whereas the Doggo is a kite. With equal sides 2 by 2. If I limit my servos to 180°, it is because of the structure of the chassis which abuts against the femurs. You have to make choices, that’s one of them.
  10. Of course ! It is what I have done here, GeekServo - real 360° - Programming - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums Yes, the Doggo and my quadrupeds are based on the same mechanical principle.
  11. This video looks very cool, but there is not much information on the pairing procedure between the transmitter and receiver. Fortunately, this BIND procedure is described in 3 points near the bottom of the page of the link you sent. I don't know this type of radio control, but I think that even if you have already done it, I invite you to start the BIND procedure again, scrupulously following the 3 points.
  12. Can you give the link of the shop where you bought the RX/TX ?
  13. Thank you for the video. Nothing obvious ! Did you try with 2 or 4 servos ?
  14. Sorry if I'm missing the point. I'm missing something in the editing of the first video. I can clearly see the 3-strand cable from the geekServo to the receiver, but I cannot see the 3-strand cable from the ESC to the receiver. Could you make a new video, but spreading out the connections so that we can better see where the cables leave from, and where they arrive.