Comments on: Delta robot with Arduino

By: robottini

robottini — Sat, 18 May 2013 05:27:18 +0000

12 cm upper arm, 25 cm lower arm

By: sabih toor

sabih toor — Fri, 17 May 2013 14:06:31 +0000

Hello! I am also building a delta robot. I want to know what is the ratio of arm and forearm in delta robot????
I need urgent help….plz reply me soon, thanks!

By: robottini

robottini — Mon, 25 Mar 2013 16:41:22 +0000

In this part of the code:

void setup() {
size(600,600);

// open serial port
myPort = new Serial(this, Serial.list()[0], 19200);
frameRate(100);
noCursor();
}

in the instruction:
myPort = new Serial(this, Serial.list()[0], 19200);

the program take the first serial port. You can see witch is your port in this mode:

println(Serial.list());
myPort = new Serial(this, Serial.list()[0], 19200);

The first port you see after the println(Serial.list()); is the Serial.list()[0], the second is Serial.list()[1] and so on.
So, you can find your right port.

By: Malte

Malte — Sat, 23 Mar 2013 01:42:14 +0000

First of all thank you for helping me.
No I don’t see the data in the Serial Monitor.
When I try to change the Serial port a get an error “ArrayIndexOfBoundsException: 2″ and
Stable Library
=========================================
Native lib Version = RXTX-2.2pre2
Java lib Version = RXTX-2.1-7
WARNING: RXTX Version mismatch
Jar version = RXTX-2.1-7
native lib Version = RXTX-2.2pre2
Exception in thread “Animation Thread” java.lang.ArrayIndexOutOfBoundsException: 2
at DeltaArduProc___Proc.setup(DeltaArduProc___Proc.java:36)
at processing.core.PApplet.handleDraw(Unknown Source)
at processing.core.PApplet.run(Unknown Source)
at java.lang.Thread.run(Thread.java:662)

By: robottini

robottini — Fri, 22 Mar 2013 03:39:40 +0000

Do you see any data coming from Processing to Arduino in the Serial Monitor?
Is the serial port in Processing the right serial port? es. 0 or 1 etc?
Can you explain more in deep the problem?

By: Malte

Malte — Thu, 21 Mar 2013 00:01:40 +0000

Hi, I am having trouble with getting the Processing to send the data to the board. The Processing gets the mouse movements and coverts to data but the data doesn`t get to the Arduino. Could you help me ?
PS: My english isn`t very good.

By: Ricardo Alves

Ricardo Alves — Mon, 14 Jan 2013 21:27:58 +0000

Hi Davide.

I had a that problem when working with arduino and servos. I came to a conclusion, that happen when Arduino can’t give current to all devices. The solution is to feed all devices through external voltage sources, that did the trick to me.

By: robottini

robottini — Thu, 24 May 2012 09:56:24 +0000

I think this is an electrical problem.
Test only the Arduino/ATtiny85, without servos connected.
Connect one servo and test, then connect the second etc.
The servos have to be a separate power (5-6) and ALL the grounds have to be connected.
Can you explain how the servos power is made? batteries? which kind?

By: davide

davide — Thu, 24 May 2012 09:37:15 +0000

Hi,
congratulations for this excellent tutorial.
Hi have tried to replicate it, but my arduino reset every time after 15-20 seconds.
I have a separate 5v supply for the servo, with common mass, but arduino is still resetting…

By: robottini

robottini — Tue, 08 Nov 2011 18:33:54 +0000

the code is linked inside the post: http://robottini.altervista.org/wp-content/uploads/2011/10/DeltaArduProc.zip
There is the Arduino and Processing code.