oracid

Eurobricks Citizen
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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/user/oracid1/videos

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  1. Here is the video of the second test I did at 9 p.m. to avoid sun glare. New are the long neck and the slippers.
  2. I think there would be no problem going the other way, but it's a good test to do. Yes, the future TRR is planned inside, but despite everything, if there is too much light, it's a disaster. That's why I did the test in my garage. Yes, the microcontroller board is an Arduino Nano and the camera is a Huskylens. I did a very similar 12 DOF, but without the camera, here, 12DOF-Q-3 Quadruped whith GeekServos - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
  3. The objective here is to make a fast, light and robust little quadruped to compete in the TRR (Toulouse Robot Race) 2022/23. This is now made possible thanks to Geekservos. At the TRR, the speed track is reserved for rolling line-following robots. The challenge for me is to play in the big leagues, but with a quadruped equipped with the Huskylens camera. Here is the first test, I hope there will be others.
  4. It's possible with 2 motors, even 2 Lego motors, I've done it before, but with 2 servos (angular or continuous rotation), I think it would be more complicated. No two servos react exactly the same. There could be opposing stresses that would accumulate and in the end destroy the 2 servos. But it would be interesting to test this, indeed. I will do that, one day. Good idea !
  5. The Green is a servo. That means that it has an internal electronic driver like any servo. It can be drived with an RC servo signal. So you can use it on a shield with the Servo Arduino library. With value from 90° to 0°, it goes in a direction, and with value from 90° to 180°, it goes to the reverse direction. The speedest is 0° and 180°. The Red and the Blue are DC motors with only 2 wires. They are not servos. The Blue has more torque but less speed than the Red. You can't drive them like RC Servo. You can connect them to a Shield to a PWM pin to modify the speed, but you can't modify the direction. If you want to, you need an external DC motor driver and 2 pins connection. Hope this help you. I know nothing about this.
  6. There is the Grey GeekServo which is a real 360° servo that I have done a thread here, https://www.eurobricks.com/forum/index.php?/forums/topic/190129-geekservo-real-360°-programming/ And there is a Green GeekServo which is a continuous rotations servo, you can see an example here, https://www.eurobricks.com/forum/index.php?/forums/topic/191444-rolling-robot-chassis-ugv-to-start-in-robotics/ There is too a Red GeekServo which is not a servo but a DC motor.
  7. Hi @2GodBDGlory. I'm not sure I can help you, but allow me a few remarks. - Unfortunately, servos rarely work in 3S (11V). In your car, there is probably an electronic circuit that lowers the voltage to 5V. - if your wires are colored, there is certainly a red wire and a black wire for the servo supply. You must connect these 2 wires to the red and black (brown) wires of your Geekservo. - now, there are 3 wires left that you must successively connect to the orange wire of the Geekservo and test each time. I hope this will help you a bit.
  8. Thanks guys for your support. Yes, @grum64, I understand your sentiment. Robots can be the worst and the best, but isn't our worst enemy most often ourselves. @gyenesvi, Lego is an amazing medium for creativity, but it's just pieces of plastic. Why make it a dogma borrowed from religiosity? I forbid myself nothing. I cut, I paste, I print and above all, I use everything that could easily increase my creative ambition.
  9. Here is a new video with a new quadruped. Here, the goal is to offer a quadruped very easy to make, thanks to GeekServos which are Lego compatible while being RC servos with standard connections.
  10. Thanks to GeekServo, it is now very easy to make a good-sized rolling robot for a reasonable price. This robot is not all terrain and it will not climb stairs, but as you can see, it can already overcome a 6cm obstacle. It is extremely easy to make and I hope that this chassis will encourage anyone wishing to start in robotics to get started. The code is very minimalist, and a single function of 3 lines allows to execute all the movements. https://github.com/oracid/Rolling-Robot-UGV
  11. Yes, you are right, but the problem is what is the method to get good value for P, I and D.
  12. Thank you. I've always thought that the fewer lines of code, the more readable it is. It is for this reason that when several instructions relate to the same objective, I group them together on the same line. When all the whole code fits on the screen, I'm very happy. This way is considered heretical, but I will not change it. Unfortunately, this is not possible with Python. Pity.
  13. In this video I show how to program the real 360° Gray GeekServo. This video is not sponsored.
  14. The code is 30 lines long. You can see it at 1'53". The link is on description, but here it is, https://github.com/oracid/Chariot-Robot-HuskyLens-Line-Follower-with-PID/blob/main/Chariot-LINE_TRACKING-V4-ref.ino Thank you, but I should work still a little bit.