Let's Make Robots!

Fun programming suggestions

Sup. I've been a lurker here since 2011. When I started I was very new to all of this. Electronics, software, and mechanics blew my mind. Of those three I gradually began learning electronics and software to the point where I could write Arduino sketches and understand the essential parts of most electronics datasheets (with mechanics seriously lagging behind). And I was a happy person. I then fiddled with more Arduino and even got myself a Raspberry Pi. A bit earlier, I had made a robot that was capable of finding and extinguishing candles.

I need help for game testing - solved

Okay, I'm delighted to say that my latest project, a python online multiplayer game is almost done! All works as expected (except that my masterserver keeps resetting its server list every half-hour, and that the Server.exe bypasses its interface and runs as an invisible process... hey at least it still runs!)

Can I replace this camera's usb cable?

I have an eyetoy camera that works very well with my raspberry pi. However the USB cable is long as hell and there are five cables coming out of the camera into the USB. My shorter cable that I want to use is the standard 4-wire one. I suspect that there might be some sort of converter contained in the camera's cable, and that replacing it would be impossible. Here's the camera, and notice the lump at the end of the cable. What do you guys think?

Quick question - voltage regulators in parallel (sorta)

I have a 8.4V 2/3A 1100 mAh NiMH battery from an airsoft gun (charger was included!) and I read that the raspberry pi and most USB devices tolerate only up to 5.25V (okay I guessed 8,4 was way too much). I need to regulate it to 5V. I thought of using a low-dropout voltage regulator, but the shop nearby only seems to support voltage regulators of a max of 1.5A. I have calculated that my robot can have 3A surges if all systems are on and the motors are stalling (extreme scenario, but it might happen).

It amazes me how many people don't know how to use Google

I've been noticing the regular "help me plz I don't know how to google" posts lately, and I find them really sad. I propose that we add a banner on the side of the post new forum topic page so that people think twice before ignoring google. Maybe a banner that says "Are you sure you've done your homework before asking? Check google before asking us to help you out.

Thought I'd share my upcoming game

I've been hard at work since March. I've been trying to write a game with Python, and I must say that it all went smoothly until I hit networking like a stone wall. It took a couple of weeks, but I figured out how to make it work, and I guess that I'm soon approaching something playable (maybe a playable free for all server as soon as school ends or earlier). Oh, by the way it's a 2D multiplayer online platformer shooter licensed under Creative Commons. So it's free.

RaspberryPi - powered talking robot using Cleverbot (Idea)

I just got this awesome idea: https://code.google.com/p/pycleverbot/

I've also seen a library for speech recognition somewhere...

'Nuff said.

Considering I can hook up both a mic and a speaker, this should be awesome!

Oh and a WiFi dongle/ethernet cable.

A robotic platform for further development
Using a
Intro This is my second robot, sort of an improvement over my first one of which I unfortunately lost all pictures. This is a sturdy platform that uses a plastic … Read more

The future of hobby robotics?

Hello dear LMRers! Not long ago I launched a blog at ohmnivore.co.nr . For a start, I wrote about an idea I had in mind for a long time and that has me wondering; why are there so little RaspberryPi-powered robots? I post this to stimulate a discussion about the RPi (I'm aware a lot more people will see it here, not at my blog). I'm too lazy to edit all the links, so the original version with working links is here.


Picaxe as an I/O expander for Arduino

As I was thinking of new features for my robot, I realised how painfully short I was on pins! The Arduino Mini just doesn't have enough! I'm not thinking of upgrading to a Mega, seeing how pricey it is and also because it's pretty huge. That's when I though of I/O expanders. Unfortunately, most are designed to be shields for anything but the Arduino Mini, so, again, I didn't know what to do. That's when I thought of using a Picaxe for expanding! I'm thinking of using a PWM or an analog pin from the Arduino as an output to a Picaxe input pin.