Lego quadruped Arduino? (glowy)

[glowytheglowbug]

  On 12/14/2023 at 1:50 PM, oracid said:

Unfortunately, I don't think so. The Raspberry world is designed for 3.3V. A large part of the pins are used for communication, UART, SPI, I2C. And all sensors are 3.3V.
This is part of the reason why I stay with the Arduino Uno or Nano.

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oh thanks, welp starting the collection of useless circuits lol, I'm planning to connect a receiver to the Arduino and use a radio controller (made for a plane) for it by plugging the PWM inputs into the Arduino, would that work for remote controlling?

[oracid]

  On 12/14/2023 at 2:36 PM, glowytheglowbug said:

I'm planning to connect a receiver to the Arduino and use a radio controller (made for a plane) for it by plugging the PWM inputs into the Arduino, would that work for remote controlling?

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Maybe this topic will interest you.

Mini Tank - Radio Controller - Geekservo - Arduino - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums

 

[glowytheglowbug]

  On 12/14/2023 at 4:39 PM, oracid said:

Maybe this topic will interest you.

Mini Tank - Radio Controller - Geekservo - Arduino - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums

 

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Also i found some interesting motors and servos

13kg?https://www.aliexpress.us/item/3256805735585376.html

https://www.aliexpress.com/item/1005006285236552.html?spm=a2g0o.store_pc_groupList.8148356.15.65aa135c9OnPVH

[oracid]

Yes, the DC motor seems interesting, I don't know it. But he has no interest in a quadruped.
I have already tested the QHrobot servo H96S - 180. I measured a torque of 8kg.cm. It weighs 95g, which is quite heavy. I have considered making a quadruped with him, but not at the moment.

https://drive.google.com/file/d/1b2hZ-AMwO6TSSXHPfZS6pSNXNZMiR89_/view?usp=sharing

Edited December 15, 2023 by oracid

[glowytheglowbug]

  On 12/15/2023 at 6:57 AM, oracid said:

Yes, the DC motor seems interesting, I don't know it. But he has no interest in a quadruped.
I have already tested the QHrobot servo H96S - 180. I measured a torque of 8kg.cm. It weighs 95g, which is quite heavy. I have considered making a quadruped with him, but not at the moment.

https://drive.google.com/file/d/1b2hZ-AMwO6TSSXHPfZS6pSNXNZMiR89_/view?usp=sharing

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Also with my geekservo motors, they don't seem to have a hard stop when they rotate past 360 so technically are they able to continously rotate? 

Edited December 15, 2023 by glowytheglowbug

[oracid]

If you're talking about the gray GeekServo, the answer is, no.

[glowytheglowbug]

  On 12/15/2023 at 1:30 PM, oracid said:

If you're talking about the gray GeekServo, the answer is, no.

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Ah alright, my 1.4:1 gearing just screws the angle up once it rotates over 360 but it shouldn't happen anyways, thanks!
it seems to happen only when I overdraw too much current or when the code crashes

Edited December 15, 2023 by glowytheglowbug

[glowytheglowbug]

  On 12/15/2023 at 1:30 PM, oracid said:

If you're talking about the gray GeekServo, the answer is, no.

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my arduino nano has just arrived btw, the hub seems to not power the servos and I just hear a clicking noise 

 

https://www.aliexpress.com/item/4000579100527.html?spm=a2g0o.order_detail.order_detail_item.7.4063f19c462En7

got this arduino btw

Edited December 16, 2023 by glowytheglowbug

[oracid]

You must be more specific. 
Can you show me the code and a picture of the mounting.

[glowytheglowbug]

  On 12/16/2023 at 12:14 PM, oracid said:

You must be more specific. 
Can you show me the code and a picture of the mounting.

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the leds dont light up, they only light up when the USB on the arduino is plugged in 

[oracid]

  On 11/12/2023 at 6:21 PM, oracid said:

But with a needle, you must invert the 2 little connectors of the PH2.0 connector. This is very important.

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Maybe you will have a second chance.

Please, stop powering the Shield ! ! !

Very lightly, with a needle, you must lift the lugs which hold the small pin connectors in their housing.
Then you gently pull these small connectors and reverse them .
How many Nano did you order?

Please look very carefully at the images in the links. https://fr.aliexpress.com/item/33063354279.html?spm=a2g0o.order_list.order_list_main.353.4e905e5bcm5dTU&gatewayAdapt=glo2fra

 

[glowytheglowbug]

  On 12/16/2023 at 1:45 PM, oracid said:

Maybe you will have a second chance.

Please, stop powering the Shield ! ! !

Very lightly, with a needle, you must lift the lugs which hold the small pin connectors in their housing.
Then you gently pull these small connectors and reverse them .
How many Nano did you order?

Please look very carefully at the images in the links. https://fr.aliexpress.com/item/33063354279.html?spm=a2g0o.order_list.order_list_main.353.4e905e5bcm5dTU&gatewayAdapt=glo2fra

 

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there are 2 holes with slots instead of 2 tiny holes as you can see in my picture
do you happen to have a video or more pictures of the one you have?

 

 

ah it works now, has lights and servos move! thanks

Edited December 16, 2023 by glowytheglowbug

[oracid]

  On 12/16/2023 at 3:21 PM, glowytheglowbug said:

ah it works now, has lights and servos move! thanks

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What have you done to make it working ?

 

Anyway, here is a picture with the way to move the little connector.

 

Edited December 16, 2023 by oracid

[glowytheglowbug]

  On 12/16/2023 at 5:39 PM, oracid said:

What have you done to make it working ?

 

Anyway, here is a picture with the way to move the little connector.

 

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in the connection between my battery and the plug I just swapped it XD 

[oracid]

  On 12/16/2023 at 5:41 PM, glowytheglowbug said:

in the connection between my battery and the plug I just swapped it XD

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I don't really understand, but if it works, all is good.

[glowytheglowbug]

  On 12/16/2023 at 5:44 PM, oracid said:

I don't really understand, but if it works, all is good.

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basically the red from my battery goes to the black on the plug, and the black on the plug goes to the red on the battery :D

[oracid]

  On 12/16/2023 at 5:45 PM, glowytheglowbug said:

basically the red from my battery goes to the black on the plug, and the black on the plug goes to the red on the battery :D

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I wouldn't say it's a good thing.

[glowytheglowbug]

  On 12/16/2023 at 5:48 PM, oracid said:

I wouldn't say it's a good thing.

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is that what its supposed to do by changing the polarity of the pins

[oracid]

It works, but one day, you could forget what you have done.

[glowytheglowbug]

  On 12/16/2023 at 6:03 PM, oracid said:

It works, but one day, you could forget what you have done.

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i mean it reminds me that i suck at soldering by the amount of tape on the connections also the color of the wires is fine, ill figure the code out now thanks for your help!

[glowytheglowbug]

  On 12/16/2023 at 6:03 PM, oracid said:

It works, but one day, you could forget what you have done.

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can you attach buttons to the nano shield? don't see a way to do so

[oracid]

  On 12/17/2023 at 2:29 PM, glowytheglowbug said:

can you attach buttons to the nano shield? don't see a way to do so

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Yes, of course !

Here, the code :

// putting a fugitive switch between GND and pin 0
// Each time the switch is pressed, the value of x toggles between 0 and 1.
const int pb = 0;
bool x=0;
void setup() {
  Serial.begin(9600);
  pinMode(pb,INPUT_PULLUP);
}
	void loop() {
  Serial.print("            x = "); Serial.println(x);
  if(!digitalRead(pb)) x = x ^ 1;
  delay(200);
}
	

Sorry, you don't have the pin 0 on your Shield. Instead use A0. So, it will be "const int pb = A0".

Edited December 17, 2023 by oracid

[glowytheglowbug]

  On 12/17/2023 at 5:27 PM, oracid said:

Yes, of course !

Here, the code :

// putting a fugitive switch between GND and pin 0
// Each time the switch is pressed, the value of x toggles between 0 and 1.
const int pb = 0;
bool x=0;
void setup() {
  Serial.begin(9600);
  pinMode(pb,INPUT_PULLUP);
}
	void loop() {
  Serial.print("            x = "); Serial.println(x);
  if(!digitalRead(pb)) x = x ^ 1;
  delay(200);
}
	

Sorry, you don't have the pin 0 on your Shield. Instead use A0. So, it will be "const int pb = A0".

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Yep! Tried it out with some buttons, works well now to figure out the inverse kinematics for the legs, do you happen to have a diagram or link I can refer to? 

[oracid]

  On 12/21/2023 at 8:39 AM, glowytheglowbug said:

now to figure out the inverse kinematics for the legs, do you happen to have a diagram or link I can refer to? 

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For 3 next weeks I am in Mexico. I am not sure I can answer your questions, because no net where I go.

 

[glowytheglowbug]

  On 12/21/2023 at 3:23 PM, oracid said:

 

For 3 next weeks I am in Mexico. I am not sure I can answer your questions, because no net where I go.

 

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Woah thanks for your help, nice to see that the cosin rule i learnt in maths is useful here, with my design as there is no value, g , can i still use this formula? Just changing the g to 0 and setting up my variables for c and a would it work? 

Also have a nice trip in mexico (if its a holiday) thanks for your help! Theres not much rush to this project anyways.