T&L Publications

The Pentagon unveils urban robo-race! Not sure if you guys saw the "DARPA Grand Challenge 2005" The top prize in '07 will be $2 million once again, but DARPA would also offer a second prize of $500,000 and a third prize of $250,000. DARPA also will make funding available for contenders bef...

I can think of lots of reasons why it my be doing this but how about telling a little more about the motor of the scooter that is acting as the "load". How much power does the motor draw in watts? P = V I P = I^2R you said (At 12 volts, you've got a measely 432 joules) watts = joules/secon...

Hey bern i read your problem... this is not hard to do if all you want is something that will tell you that... You have a "thing" infront of you and want to know if that thing is moving closer or farther away. ultra-sonics is one answer but can be expensive. dyarker mentioned a way with IR...

Hello I hope I caught you in time.... before you go out buying a programmer... If I did...DONT BUY ONE!! The MC68HC908 (Freescale Micro) has a great feature built into the chip called Monitor Mode. Monitor Mode will allow you to program the IC w/o a programmer.. all you need is a serial connection t...

For your poll I selected school, but if I had the option to pick 2... I would have picked school and It's who you know . Thats what it takes to get started into electronics.. A good college will prepare you for the basics in all fields of electrical engineering. You will be able to see theory and ap...

Ferrofluid !!!!!!! That stuff is sooooo much fun. went thru a magnet phase..(guess I'm still in it) and Ferrofluid was a lot of fun with them. Ferrofluid is expencive so dont waste any if you get your hands on some. Neodymium Iron Boron (NdFeB) magnets are some of the best magnets you can get your h...

No one has done anything embarassing in awhile. I miss the stories. hmmm.. after reading some of these, I feel obligated to tell my most embarassing... and was in a physics class. I'm sure we all have seen the Van de Graaff experiment.. Just to refresh.. The Van de Graaff electrostatic generator pr...

I have been coming to this site for a long time but I never subscribed to the magazine. I was actually looking into it ... seeing how every one here seems to be a subscriber.. I like the Nuts and Volts bulletin board but is the magazine worth the subscription.. I also heard that some of you are not ...

Helllo rocdoc I am not sure how your setup looks like but I'll give it a try... So you have a post that can move in two directions in a 2 square foot area. .. Picture this ... I once had to make a computer screen a touch screen .. to track the user finger on the screen (two directions in a 1 square ...

When people use these low voltage processors, do they usually work with similarly configured low voltage parts (for example, I'll also need a 4017 style decade counter) or do they use dual voltages on their circuit? Well, I would guess there would be little amount of IC's that would run on less tha...

Anyone had any luck running a PIC with the internal oscillator below 2v? Hello Newz not sure if you are aware... But TI's MSP line for Micro's have the best low power consumption. Low Supply Voltage Range 1.8 V to 3.6 V Ultralow-Power Consumption − Active Mode: 220 μA at 1 MHz, 2.2 V − Standby...

Hey Sambuchi, I am impressed. Who did all your PCB work? I did the PCB layout myself... It took a long time "about a month" If I had to do it over, I would have asked someone with a CAD program to lay it out.. The design and concept of the SOM baseboard is simple and fun.. Theres alot you...

whats the blinky thing and the doohickey next to the binky thing...

A guy that I work with has a kid in 6th grade.. His kid had a take home project to program a PIC to run a couple of stepper motors for a rotating solar panels... hehehehehhehe. I couldn't believe it! 6th grade! Granted the kid was in AP classes... But still!! My opinion is that some schools push and...

Heres something I think may help you... and if you have some spare time look around his site... its great!!!!!!!!

http://www.robotroom.com/ColorSensor.html

Good Luck