Got your email, Chuck, no worries. This is probably unnecessary, but just remember to watch the polarity of the capacitor. See ya. ... and Q2 ... will ... the...
Fantastic work, Keith, and a really informative write-up. You really do put a lot of thought and time into building your bots, (unlike my poor, cobbled...
http://s45.photobucket.com/albums/f84/Jonjb2005/?action=view¤t=IMG_0014- 1.jpg This symet features a motor from a cassette player, three caps salvaged...
Hey, quick question about the dark turn on circuit...you said the following: " but anything from 100-1000uF is ok. What is important is the capacitors wvdc, or...
The electrical engineer's "rule of thumb" is to ALWAYS use components that have ratings that are _twice_ as high as the maximum expected: whether it is...
It's really just for a margin of safety. I'm assuming 19Vac rms, which will have a peak of around 27V. That'll be the (unloaded) dc voltage you get. I imagine...
... I was thinking of you having 19V dc as your supply but, as I stated in my last post, it will be somewhat higher. My excuse is that I was temporarily...
I get my solar cells from cheap solar garden lights because they are cheap, small and about the only local source for small solar cells. A while ago one of...
Jo, thanks again for the help.. works like a charm! had to recheck a few things and despite my multimeter crapping out on me (cheap Radio shack one) got it...
Hooray! That's nice to know. (I must admit to thinking every now and then, "I hope Chuck doesn't write in saying I've blown up his kid's train set...". Now I...
Just very simple stuff... Resistor values, voltage on the circuit, etc but suddenly the readings have started going all over the board and make no sense... I...
I have just finished posting my latest bot. You can see the project write up here: http://akapplegarth.us/index.php?page=new-jinglebot Let me know what you...
Last night I built a solar racer and bicore headbot. Actually, I cut a few corners with both of them: I just used motors without intact gears or tape transport...
Our first bot is a neurotic mousey that runs in circles, right motor running full speed ahead while the left is very weak. When the bumper is activated, the...
