Let's Make Robots!

Record PWM values over time, tweak graph, playback to robot possible?

Hi All,

I'm trying to find the best way for me to drive an RC car around, have either the transmitter or car send the PWM values its using back to a computer which will record it over time.  I then want to tweak the graph, and then play it back, and have the computer send the RC car the new "tweaked" PWM data and it will then drive around by itself.

Can't connect to Mini Driver board

I recently purchased a Standard Educational Tadpole. This little kit for beginners comes with a Dagu Arduino Mini Driver Board. Here is the link: https://sites.google.com/a/rocketbrandstudios.com/rocket-brand-studios/store/tadpoles/tadpole-educational Tutorial for it: https://sites.google.com/a/rocketbrands ... main-minid Anyway, I have the pins and everything in the correct place, but the board itself is giving me problems. I've installed the driver over and over again (at least 5 times) to no avail. It has a blinking blue light that comes on, and a red light.

Book Recommendation: "The Peripheral" by William Gibson

I dl'd the eBook version of this to read while recovering from surgery last week and could barely put down the iPad.  It adds makers to the list of hackers that Gibson has been writing his tributes to for the last several years.  I was surprised by how much the idea of 3D printing could become a part of the fabric of a story and have it remain interesting.

Of course there are robots as well, but they don't feature as heavily-or, depending on how you look at things (was

Program freezing (or getting stuck?) when asked to calculate large numbers

Hi Guys! Ive done buckets of trouble shooting on this, and i THINK i have identified where the problem is, but i cannt work out how to correct it. In short i am programming my CNC router (converting GCode into CNC movements)

T'REX robot controller


The T'REX robot controller makes controlling robots easy!

The Arduino compatible controller comes pre-programmed with sample code that lets you control it with a supplied Android app, Radio Control or with an external controller via I²C.


20% OFF on All Relay Modules from ICStation

Customers can enjoy 20% off on the Relay Modules on www.ICStation.com before 21st, Jul.

Check the details at http://www.icstation.com/newsletter/eMarketing/ics_0714.html

Charging LiPo Batteries


I have a Turnigy 2 Cell 7.4v 2200mAh battery and iMax B6AC Balance Charger.

I made it

Looks like the procedure was a success. BP has been hovering around 130/70 all day but no cortisol counts are back yet. The Foley is in a really bad place though. My roommate brought someone with smokers cough along so I'm not getting much sleep...

looking for ideas how to attach third wheel

Hey guys I am slowly buildibg my bot this one will stand

roughly 4 feet high. Before I jump right in and start making

any cuts or add ons I was lookibg for ideas

what to use and suggestions on place ment.

I do have two more wheels of same size as the ones currently on the motors in the pic. Plus one smaller one. I 

am looking for the castor wheel type but as of now dont have a big enough one.



how do I find the time....

Hello fellow robot makers,

This may sound familiar for some and for others maybe a stupid question, but how do you guys find the time to practice your hobby.