Let's Make Robots!

Occupancy Grid Programming Help.

With much help and inspiration from Gareth and Grog (and others) I have a working Lidar (wiicamera and laser) system. Currently, I am using a very low power laser (while checking the mail everyday for the good laser to show up) and getting about 16" of range. For now during testing this is just fine. Everything is just in a smaller scale, but proportionally, everything is equal.

Macs and FTDI's

I am in the process of moving processing to a Mac. A iBook G4 to be exact. I downloaded the Arduino IDE and used it's copy of the ftdi driver. I am using the standard SparkFun FTDI board for these tests.

WiiCameras Lasers Ebay and Wavelengths


Well, you got me guys. I took the bait, I drank the Kool-aid. I am a wiicamera/laser, lidar, lassiter convert and I am quickly loving the idea. My current problem is with the strength of the laser. Need some, strength that is.

I hit the old Ebay The robot budget is a small as it has ever been so I will have to make do with the "cheap vs time to get your stuff" exchange and order from China. I have found a lot of cheap laser modules but I would like someone to check my math here.


How to? Glowing IR Ball

I need to make a glowing, IR ball.

So here's the deal, I need to make a ball, somewhere between a baseball and softball, that glows with IR light. It needs to be self-contained and solid IR --no 38khz etc. I think I have seen similar items, one LMR'er gave me a link to a IR ball they use for robot soccer. I like the overall design --the PCB "layers" etc. but it would not work exactly for what I need...

Walter Needs a Mouth

We did this once with walter's old "eyes", now another round of brainstorming with his "mouth".

Walter needs a mouth. In the past I have used the "picaxe sound detector circuit"  modified a bit, going to a few blue LEDs. As a track was played (assume the track is speech) the leds would blink and change intensity according to the audio levels. This was ok, I guess... I think I might want to go to a "led bar-graph chip" with say, 8 to 10 segments. As he speaks, the bars could be lit --from the center -->out and with more bars showing as audio levels increase. I dunno.


I have seen a couple posts go by from amcduino in the last week or so, both with spamish overtones. I should start with the fact that amcduino is actually Advance Micro and I have been personally screwed by them so I do indeed have a dog in this fight. That said, I clicked over to their site and and found a large LMR banner and text proclaiming "We are proud and honored members of LMR". Now, I may be a bit jaded here, so I ask the question openly:

Where to put all your stuff...

I just wanted to hip you guys to this one. I was at Staples (an office supply place in the 'States) and found some really great boxes. Actually, now that I googled to get an image of them, it seems that they are available in the UK as well --I should have known when I saw they were sized in liters. At any rate, they are simply awesome -and dirt cheap. The smallest one (just the size for resistors) is one buck (about 2/3 of a squid for the Brits).

"Really Useful Boxes" is the name...

Arduino --I need more serials

Ever sense I was gifted an arduino to learn with by a very kind LMR member, I have loved the thing. I like the language, power and available libraries.

X-bee as a ADC "adapter" or "converter"

Fogive me, I read and re-read the data sheets but can't seem to find this. And I know this is a long shot. The ADC channes on an X-bee --they are just data-in, data-out right? I put an analog signal in one end and I get a PWM signal (equal to the input value) from the other end, correct? Is there any way to use the ADC inputs on an x-bee and get those values out via it's TX data pin? I am trying to put together a work-around for the lack of ADC's on the propeller and I thought, hey --the xbee's have ADC inputs, can I use them? I mean, I already have the x-bee on-board, why not use it?