Let's Make Robots!

Read PWM value of a RC rx with an arduino

Hi everyone,

Having recently  found a chassis that is not motorized ( snow service toy ).

JME Mantzel's robot kit on Kickstarter

Hi everybody!

Just have seen JME Mantzel's robot on Kickstarter. I think it is awesome! :) Here is a related video from his channel on Youtube. Also if you like it, spread the word, as what he's doing is absolutely brilliant! :) I'm totally gettting one to play with as it is hack friendly! :)

Hope this type of ad/spam is acceptable :) Actually I hope to see more great things to take off!

Cheers.

 

San Francisco Circuits - Custom PCB Manufacturing & Assembly

Hello Robot-Humans,

It's a pleasure to have joined your very fun community.

I hope we can help with some of you that may have needs for custom circuit boards, either for your personal or professional needs.

We're located in San Mateo, California and have been providing PCB manufacturing and PCB assembly services to our customers since 2005.

Sonar RADAR GUI Windows APP (SensorVal,Degree)

UPDATED 3 Sonar Sensors 360 Degree - 120 Degree Servo Rotation

Improved for multi sensing. You can now use THREE Sonar sensors to display on a graph.

Improved Serial port handling, Wire-Tension is coming soon, Serial Port Availability[Menu Item] is also coming soon.

Where to buy Picaxe?

There seam to be an echo of "where do I buy Picaxe", especially from newbees from the US.

Well - let´s make some web-shops happy out there, I entered picaxe.co.uk (http://www.rev-ed.co.uk/picaxe/), looked under "distributors" and found this most likely not too recently updated list:

International Distributors/Resellers

Public Service Announcement

Only the 1st one is about robots, but still it's good that the government finally made something to warn people.

Control DC motors with an ULN2803

I live in argentina and getting thing shipped here is a mess, so I try to use whatever is available here (which is rather limited) whenever I can.

So I was wondering since I haven't found any of the typical H-bridges ...is it possible to control DC motors (speed + direction) with a ULN2803? These I can buy here. 

If so then how would that setup be? Do I need any additional components? If so then which (transistors, resistors, diodes etc)?

Cheap mini wireless cameras

I was playing around with some code for machine vision (object/facial/color/motion-detection) a long time ago, and I'm thinking to put a camera on a robot sooner or later and see where that'll take me.

So I was looking for cheap wireless cameras and I was astonished to find these:

900MHz Mini Wireless Color Camera w/Built-in Microphone - $25.50

Should Arduino based robot kits have the Arduino built in?

Now that I'm learning Arduino I've developed 3 Arduino robot kits. The first was fairly big and can take the Arduino Mega, Duemilanove or Nano. The second two have had the Arduino built directly onto the PCB so that little or no jumper wires are needed.

Which is better? The additional cost of the Arduino built in is less than buying an Arduino board and with all the basic wiring done it is much easier for those new to electronics.

LetsTalkRobots

Andrew Terranova wants to talk robots. Follow along for interviews, instructional videos, discussions, robot news from LetsMakeRobots and more!

Episode List

Controlling servo with PC using Visual Basic and PICAXE 08M

i am attempting to control a servo by clicking a button on my PC. From what i understand i have to use Visual Basic. i have not used VB before and dont really understand it. i noticed this instructable http://www.instructables.com/id/Control-real-world-devices-with-your-PC/ and have tried to build the circuit many times but it just isnt working.

servo for mini hexapod

Hello,

I want to build a mini hexapod and i would like a suggestion from you for a cheap servomachine (de kserw an to grafw kala auto) to use, which will be sufficient for this project.. I have found these here on my own:

HobbyKing HK15148

HobbyKing 928BB

sg90

mg90

sg91s

PID problems...

Hello guys,

 

I need to make a line follower for a competition...

I use:

Arduino

Ardumoto shield

30:1 reduction motors

QTRA sensors...

 

now following 3pi I got this code:

T'REX tank chassis

It's been a long time coming but the T'REX robot chassis is here!

I've just been testing the final product so I thought I would post a few photos of the new chassis. The chassis is aluminium with a black powder coating. The tracks and struts are zinc with a black anodized finish. The wheels are zinc with a chrome finish.

Getting the most from an LED

Hi guys. I have recently written the walkthorugh on how to transmit serial data with an IR led and it works fine. Now to the next step: i want to achieve the highest range possible with my LED, without using external aids such as lenses. (that is: only with electronics).