Let's Make Robots!

Reverse commands

My problem is regarding the following link:

For movement, FRITSL use the following code:

low s.8
high s.9

high s.8
high s.9

low s.9

My results are:

Developing a small, arduino-like IoT product for monitoring and tracking

Hey guys!

Long story short, we're currently developing this small, water resistant IoT product which can be used for monitoring and tracking different things. The HW would be top-quality and the SW would let you come up with all kinds of neat uses for it. 

T'Rex Controller Oops (Possibly Fixable)

Hello All,

I recently purchased a T'Rex Controller from Sparkfun that I think I probably blew a FET or two. I forgot to turn of the power while I was detaching the controller from my T'Rex Tank.  I'm looking to see if I just need to buy a new controller or if I can repair the one I have. So here's the symptoms:

Servo problems

I recently bought 4 Goteck micro metal gear servos with the intention of using them to move some joints in my 3d printed robot. I decided to test them onviously and ran some simple code on my Arduino (basicly cantering the servo, moving it to the left and then right). I had run this code before with some other servos which worked fine but these ones seemed to act weirdly. Instead of jumping straight to the right position they flapped around a bit before stopping at the right place.

chopsticks spider robot

hello everybody,

my graduation project is the chopsticks spider robot and i have a red back spider robot controller and its need a PCB but i don't have any idea about PCBs anyone can help me because we have 28 servos with 7 V  input battery and 4 IR sensors...

Thanks in advance..

serial between two picaxe

am having a strange issue  getting the 28x2 to communicate  with a 14m2

the 28x2 Tx code here http://pastebin.com/RtDvA4Sk and the 14m2 Rx code here http://pastebin.com/54KeXDaf

now the 28 Tx works as expected but the 14m2 Rx is not, it appears to go to the subroutine as it shows its recieved the data but in the terminal window no values are displaced. any and all ideas welcomed

Propeller QuickStart Boards on Sale at RadioShack

Apparently RadioShack is putting their QuickStart boards on sale for $19.97. The normal price is $35 (possibly more at RS).

I know I'll be checking my local stores for boards (though I don't recall ever seeing a QS locally).

In case you haven't heard, the Propeller is a great microcontoller to use with robotics.

LMR morès and web etiquette

tl:dr-If you violate our sense of order with (commercial) rudeness, you earn our rudeness in return.  Not saying it's right or wrong-just what to expect.

Raspberry Pi Home Automation

I have begun work on a home (or rather room) automation system using a Raspberrry Pi as its hub. I am aiming for 3 primary functions:

     1. accept commands for interface device (ex: recieve instructions to turn lights on and off and do so using GPIO and servo)

     2. accept requests for sensor data (ex: recieve a request for temp. sensor data(GPIO) and respond by relaying data)

     3. collect and transmit large collections of data to be interpreted by interface device (ex: sleep datalogging)


Movable head without pulling wires

I'm working on a small form factor turret with a movable head.  The design has a camera (w/ raspberry pi) on a spherical mount that can rotate altitude and azimuth directions.  Unfortunately, since its a turret, it must be able to twist infinitely without getting its wires tangled.  Any ideas?  I've been thinking about a laser based system, but I seriously doubt that that is going to be able to transfer enough data to stream video.  Anyone have a simple suggestion that hopefully keeps everything hard-wired?