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Topic: Help, first robot confusion (Read 2000 times) previous topic - next topic

Nelhad

Okay so I need to build a robot for my next 4-H club meeting. I decided on a rather large project that seems easy at the same time. I want to build a boxing robot! I just really need to know which arduino, hobby motors, and motor shield to buy. I really only want this project to use two motors so I am basing both of its arms on this design. https://m.youtube.com/watch?v=jS9Ifyjmhrg


Thank you, and if I posted this in the wrong forum let me know!

alka

I don't really want to steer you the wrong way with recommending any specific shields or drivers as they all have their own specific uses and capabilities.

 I will give you a tip.. that boxing arm on the link you posted controlled by a servo. Servos are relatively cheap and easy to control from an arduino. For just two servos you wont even need a shield. Just an arduino and a power source.

Nelhad

I got an Arduino Mega for half at Radio DShack and am ordering some servos soon, thanks for the advice!

Nelhad

Umm okay so if I get two of these servo motors I don't have to get a shield.
https://www.adafruit.com/products/1404
Also how what spots in the Arduino would the wires go in?

zoomkat

Servos need an external power supply similar to below.
Google forum search: Use Google Search box in upper right side of this page.
Why I like my 2005 Rio Yellow Honda S2000  https://www.youtube.com/watch?v=pWjMvrkUqX0

JimboZA

https://www.adafruit.com/products/1404
Also how what spots in the Arduino would the wires go in?
Follow the "learn" link from that page and you'll see: the control wire goes into a digital pin as always and the feedback wire into an analog one.

Most servos don't have that feedback wire.....
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Your answer may already be here: https://forum.arduino.cc/index.php?topic=384198.0

Nelhad

So in short will it work or not, and what power supply would you suggest.

Nelhad

Also what is the difference between a continous servo and just a regular servo.

zoomkat

Google forum search: Use Google Search box in upper right side of this page.
Why I like my 2005 Rio Yellow Honda S2000  https://www.youtube.com/watch?v=pWjMvrkUqX0

TheOtherGuy9603

I assume by boxing robot you mean it continuously "punches" whatever's placed in front of it. If that's the case I recommend you use a simple dc motor attached to a crankshaft mechanism. You can get gearbox kits to create these types of things rather easily.  :smiley-mr-green:

Nelhad

I assume by boxing robot you mean it continuously "punches" whatever's placed in front of it. If that's the case I recommend you use a simple dc motor attached to a crankshaft mechanism. You can get gearbox kits to create these types of things rather easily.  :smiley-mr-green:
What do you mean, can you attach a pictures, and you right all I want it to do is continually punch.

Nelhad

Servos need an external power supply similar to below.

Where does the ground wire go from the motor?

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