Search found 9 matches

by Megadan
Thu Nov 27, 2008 10:58 pm
Forum: General Discussion
Topic: Freeze Fountain overdrive LEDs
Replies: 11
Views: 3069

> This arrangement is flawed. Maybe... if you were sending a UV LED array to Mars to image certain rocks against a six order of magnitude scale, but for this project the scheme is just fine. I find this constant imperialist vibe toward "pure" electronics a true waste of time. Too much energy has bee...
by Megadan
Wed Jul 28, 2004 1:55 pm
Forum: Computer Programming
Topic: Threaded interpretive languages
Replies: 4
Views: 2550

Re: Threaded interpretive languages

If your chip (whichever one it is, you didn't bother to say) supports alternate register sets, then they are probably aliases for locations in low memory already. Look for something like a "register base pointer" or "register base index".<p>Editor Dan
by Megadan
Fri Apr 23, 2004 3:22 pm
Forum: General Discussion
Topic: PICAXE(s) anyone ?
Replies: 1
Views: 939

Re: PICAXE(s) anyone ?

> Try a Google on *picaxe* for insights.<p>Also coming in the June issue of Nuts & Volts.
by Megadan
Sat Oct 25, 2003 1:38 am
Forum: Robotics
Topic: Cheap vision solution?
Replies: 3
Views: 2445

Re: Cheap vision solution?

Rock on, Mike!<p>Dan
by Megadan
Sat Oct 25, 2003 1:37 am
Forum: Robotics
Topic: Stamp reading RC Receiver signal to servo
Replies: 2
Views: 2324

Re: Stamp reading RC Receiver signal to servo

A 10K resistor to ground will deal with this open loop capacitance nicely. I used a Basic Stamp to read my Futaba R/C receiver signals in 1996 - but back then the receivers generated a real 5 volt square wave. These days it's closer to 3.3 V - so beware!<p>Dan
by Megadan
Wed Oct 01, 2003 11:48 am
Forum: General Discussion
Topic: Pseudorandom Flickering Effects Project
Replies: 9
Views: 5034

Re: Pseudorandom Flickering Effects Project

"I would appreciate any comments; perhaps I am taking the wrong view on this?"<p>We at the magazine share your view, Dave. We recently updated the writer's guidelines to require at least object code for projects containing programmable parts, with both source and object files preferred. I am activel...
by Megadan
Mon Sep 29, 2003 7:03 pm
Forum: Robotics
Topic: Servo Control Voltage
Replies: 3
Views: 2654

Re: Servo Control Voltage

Most of the newest Futaba R/C receivers generate a 3.3v control signal, while shunting the raw Rx battery voltage to the power lead of the servo. The idea of using a diode inline is good, as long as the 0.6v ding doesn't keep the servo from working. On a recent 14 servo signal reprocessor, I used so...
by Megadan
Fri Aug 08, 2003 10:18 am
Forum: General Discussion
Topic: Any hints on how to buld pedometer?
Replies: 13
Views: 3290

Re: Any hints on how to buld pedometer?

If you open up the February 2003 issue of our magazine, the winning entry for the TI MSP430 design contest was a multi-function accelerometer. One of the functions was a pedometer.<p>Dan
by Megadan
Thu Aug 07, 2003 3:25 pm
Forum: General Discussion
Topic: Dakota Digital Camera $11
Replies: 5
Views: 1604

Re: Dakota Digital Camera $11

With a dash of cleverness you could build your own Bullet Time capture unit for about $300...<p>Dan