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Author Topic: Simple One-Servo Walker  (Read 5677 times)

erco

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Simple One-Servo Walker
« on: September 29, 2015, 07:04:35 PM »
From upcoming part three of a series in SERVO magazine. Passive legs let the bot fall forward.



walkerpic.jpg
*walkerpic.jpg (44.23 kB . 677x768 - viewed 353 times)
« Last Edit: October 06, 2015, 08:00:53 PM by erco »

cevinius

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Re: Simple One-Servo Walker
« Reply #1 on: September 29, 2015, 07:37:04 PM »
Very cool. So much personality. :D

Tor

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Re: Simple One-Servo Walker
« Reply #2 on: September 29, 2015, 09:54:59 PM »
A  walking breadboard.. good job! I can see some of your ebay bargains included there..

-Tor

erco

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Re: Simple One-Servo Walker
« Reply #3 on: September 29, 2015, 11:00:41 PM »
Very cool. So much personality. :D

Thanks, it's a bit monolithy sitting still. In motion, it's somewhere between TARS and the drones Huey, Dewey & Louie.

Speaking of TARS, I have to get back to this one:



Ttailspin

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Re: Simple One-Servo Walker
« Reply #4 on: September 30, 2015, 01:38:21 AM »
That thing cracks me up. "thump,thump..thump,thump..thump,thump....
Personality Plus, it's a breadboard, that walks...  wait, what??.

Pretty cool, erco.


-Tommy

deshipu

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Re: Simple One-Servo Walker
« Reply #5 on: September 30, 2015, 03:38:25 AM »
Hmm... Technically, it's a quintuped? Well done. I wonder if it could move a little smoother without the pauses between servo movements.

Ralph

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Re: Simple One-Servo Walker
« Reply #6 on: September 30, 2015, 06:51:36 AM »
Very nice one motor walker.  I'm a fan of this style of minimalism.  Beyond keeping the costs and build complexity down, you keep both weight and power requirements under control.

I keep subscriptions to both Servo and Nuts & Volts magazines.  I'll be looking for your write-ups.

Yahmez

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Re: Simple One-Servo Walker
« Reply #7 on: September 30, 2015, 07:09:28 AM »
Wow! This little guy is quite responsive in it's light tracking ability. I have a love of simple bots and also single motor/actuator robots, this fits both categories. Nice work! It looks like I need to restart my subscription to Servo ASAP.

What do you use the numeric display for on the bot? Also do you have a close up of the leg mechanics to share or will that be in Servo magazine?

erco

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Re: Simple One-Servo Walker
« Reply #8 on: September 30, 2015, 01:58:23 PM »
Construction is pretty forgiving, you can see some details at https://www.youtube.com/watch?t=142&v=_99Bq5mOFDs

That 3-digit LED display is a $1 Ebay DVM. It keeps resetting when the robot walks, the alkaline batteries can't keep with servo current demands. It's useful for monitoring analog sensor values, as shown at https://www.youtube.com/watch?v=8gotiXIKFV8

A more interesting use of the onboard DVM is as a general numerical display by PWMing calibrated values to it. Cheapest LED display in town. https://www.youtube.com/watch?v=G4U6-0F0_Lw   and   https://www.youtube.com/watch?v=rfnpWDJ1R8E


erco

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Re: Simple One-Servo Walker
« Reply #9 on: October 06, 2015, 07:44:28 PM »
Excellent, I just heard from a guy in the PICAXE forum who built this bot. Nice to see that it wasn't hard to duplicate, that was my goal. Hopefully there will be more, construction is detailed in the next SERVO magazine (November).


cevinius

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Re: Simple One-Servo Walker
« Reply #10 on: October 06, 2015, 08:00:19 PM »
Awesome! I want to try to make one too. :D

Protowrxs

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Re: Simple One-Servo Walker
« Reply #11 on: October 06, 2015, 08:06:54 PM »
Looks like a fun 2.5g /Attiny85 version project... :)
The past is done, the future is not here, live today...
My Bots: http://www.Protowrxs.com/Robotics

erco

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Re: Simple One-Servo Walker
« Reply #12 on: October 27, 2015, 06:26:03 PM »
Part three of my PICAXE series is in SERVO's November issue, featuring this little bot. The first half is online at http://servo.texterity.com/servo/201511/?folio=68&pg=68#pg68

Speaking of simplicity, I found another "Walking Breadboard" on Youtube. It has trouble getting traction. Looks like he has some pivoting feet on the servo arm "legs". IMO they need to grip one way and slide the other, or else use ratcheting wheels.


cevinius

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Re: Simple One-Servo Walker
« Reply #13 on: October 28, 2015, 04:53:29 AM »
Cool article, erco!

That walking breadboard!!! It like watching a very slow turtle walk!

erco

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Re: Simple One-Servo Walker
« Reply #14 on: December 19, 2017, 11:37:30 AM »

 

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