oracid

I have always appreciated your work for several years now. In my opinion, adapting a non-Lego element inside an original element requires considerable energy. I am rather a fan of adapting visible servos or motors by screwing or gluing, which can already take a lot of time, but frees the mind from a big constraint and allows the creative possibilities to be multiplied by 100.

Our shadow, to many of us. . .

This is an excellent choice! I also use an Arduino Nano. . . The combination of Lego, Arduino and RC servo will allow you to move forward very quickly in all your projects. I would even say that sometimes you have to know how to stop and think. Currently, I am working on a large quadruped with servos that have a torque of 40kg.cm. I have a lot of breakages and I think I'm at the limit of what is possible with Lego. And yet, I advance. More modestly, I ordered the latest Uno, the Uno R4 WiFi. I have already started to solve some interface problems to avoid any use of soldering iron and make the creation as simple as possible, even for children who are beginners. Thank you for your attention. Don't hesitate to ask questions, here, or on my YouTube channel.

In all my projects, the only electronics I do is soldering switches. A microcontroller card is exactly what is needed to eliminate the complexity of electronics.

Precisely, that’s the goal! I used Gray GeekServo in my creations. These are excellent servos that can do a true 360°. You can do a lot of things with these servos, even a quadruped with 12 DOF. I campaign for the mixture of Lego, Arduino, RaspPi, RC technologies. This multiplies our creative possibilities by 100. GeekServo - real 360° - Programming - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums 12DOF-Q-3 Quadruped whith GeekServos - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums 8DOF-Q-3 - Quadruped line follower with Huskylens. Training for TRR contest 2022 - In my garage - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums

Here a new vidéo where you can see my races in the Toulouse Robot Race of june 2023.

In France, they are two main forums : https://www.techlug.fr/Forum/index.php https://forum.bricktechnic.fr/

No matter how you call it, arm, servo-horn, rudder. The goal is a piece which is connected at the servo gear to transfer the torque at a mechanism. Like this, https://fr.aliexpress.com/item/4001226860763.html?spm=a2g0o.productlist.main.53.4ac23ccfw8bZHw&algo_pvid=f07a1c27-6cbe-4b6a-9f4f-e530f8fa7fa5&algo_exp_id=f07a1c27-6cbe-4b6a-9f4f-e530f8fa7fa5-26&pdp_ext_f={"sku_id"%3A"10000015497388303"}&pdp_npi=2%40dis!EUR!11.45!11.45!!!!!%402145280e16736410396075747d0708!10000015497388303!sea&curPageLogUid=gnZiQ4duVBJ5

No. The RC standard servo output is a usually a 25T gear. Like here, https://fr.aliexpress.com/item/1005004505256614.html?spm=a2g0o.productlist.main.11.2f875184YJ5Yxm&algo_pvid=2f894f45-2c7e-42d1-8853-ac86e4b6d972&aem_p4p_detail=202301130500174375319238696840000616623&algo_exp_id=2f894f45-2c7e-42d1-8853-ac86e4b6d972-5&pdp_ext_f={"sku_id"%3A"12000029399308713"}&pdp_npi=2%40dis!EUR!23.71!12.8!!!!!%40214527c616736148179144989d0702!12000029399308713!sea&curPageLogUid=4IvBTBaz2Rw4&ad_pvid=202301130500174375319238696840000616623_6&ad_pvid=202301130500174375319238696840000616623_6

As you know, I don't use anymore Lego servos but standard RC servos. One thing should be great is a few RC standard servo arms. Let say thin beams from 3L to 9L. Of course, I know the output RC standard servo gears are not all the same, but the 25T is the most usual. Thanks again for this thread !

@howitzer Thanks for your comments. The 1L beam already exists, it is the ref.18654, BrickLink Reference Catalog - Parts - Category Technic, Liftarm In my opinion a 50L beam will not be fragile. I have an ABS 50cm ruler, and I can say it is not fragile at all. Anyway, it is up to everyone to decide what he want to do with its parts. If the section is too small for a large piece, then it is enough to increase its area. The problem is that Lego does not offer the minimum number of parts that can be found in the assembly section of a DIY store. It is true that Lego offers a multitude of parts that cannot be found elsewhere, but not all the basic parts for doing mechanics. If you go to a big DIY store, you'll find screws of all sizes and diameters. This is what I would like to find in the Lego catalog.

Thank you for this very interesting topic. To get into, here are my first proposals: - thick beams of all lengths, from 1L to 50L. - thin beams of all lengths, from 1L to 50L. - pins from 1L to 6L, without any stopper. - all pins, with friction, and without friction.

Thank you @Toastie I don't know what is RIS1.0. Could you tell me about it ? Oh, yes, I had 3 dogs in all. But not anymore to day. Here it was a post Covid TRR with a small circuit. Next June, a big circuit is planned, with many more people. Things are like that ! Always faster, bigger, stronger. . .

Thanks. I hope it will be faster in June 2023, at the next TRR, on a bigger circuit.

The training day at the Toulouse Robot Race.

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.

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

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.

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 !

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.

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.

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.

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.

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.

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