Hi All!!! I hope you all had an awesome summer. Well now is the time to get down to business and start building robots and planning Games to compete in. This...
OK. I'll bite. I love the idea of polyacene "batteries" instead of heavy caps ... not much sunlight in the UK! Any UK beamers out there who know where I can...
... They're a common component in cell phones, where I guess they retain the memory while switching main batteries. Generally easily removable; they look like...
So far Miller Popper 4a is the winner, and I succumbed to the temptation to build a photopopper with that circuit. It works well! The circuits seem more...
Thanks for testing the circuit in the mobile platform unit. That is essential because the mechanics and electronics are interactive. Best photopopper...
Regarding the schematic located here... http://www.solarbotics.net/library/circuits/driver_stepper_beamstep.htm l Do the little circles on the Fwd/Rvse pins 1...
The North American ANSI standard for logic symbols http://www.ddpp.com/DDPP3_pdf/IEEEsyms.pdf#search=%22ANSI%20logic%20symbols%22 uses a circle or bubble at an...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the beam group. File :...
beam@yahoogroups.com
Sep 5, 2006 6:08 am
54377
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the beam group. File :...
beam@yahoogroups.com
Sep 5, 2006 6:21 am
54378
I have been recently experimenting with various Solar Engines, and was interested in MOSFET designs, so when I found the GBSE on the Solarbotics.net pages, I...
... 20symbols%22 ... mean "inverted", "negated" or "active low". ... this case the circles at pin 1 an 19 indicate that these Forward and Reverse enable inputs...
I have posted Miller Popper V6 which uses just one 1381 and two darlington transistors capable of driving a 1A load. D2 and D3 should be Schottky or Ge type...
Been a while since I last looked at this circuit. I remember testing it on the bench although I never installed it on a mobile platfom. Four years later it...
Hi Andy, ... It will connect 4 HCMOS outputs together with opposite output levels and will heat up and probably damage the chip if Vcc = 5V One transistor and...
OK, I have posted GBSE2 in my file folder which fixes all the shortcomings of the previous version. It uses two 1381E triggers but less parts overall. Uses...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the beam group. File : /wilf_nv/GBSE2.gif...
beam@yahoogroups.com
Sep 6, 2006 9:51 am
54385
Thanks for the detailed explination and the new design, I should have the parts to implement the new circuit, and will report back with results soon. Thanks...
My pleasure. Anyway note that C2 = C3 and for starters use 0.22uF. wilf ... From: the_mechanitech To: beam@yahoogroups.com Sent: Wednesday, September 06,...
Polyacene Batteries WEB SITE: http://www.goldmine-elec-products.com/prodinfo.asp?number=G13133 DESC: This Kanebo PAS920-5-VB6R-2 battery is only 9.3mm (dia.) x...
Hi Guys This is Krishna from India. I would like to check if any one of you can send me a simple 2 motor walker circuit or a photovore. I am crazy about BEAMs...
Krishna, There are many circuit out there, the most basic form of a 2 motor walker being the one featured in the Junkbots book. Have you got this book? it...
Tom. thanks a lot for your informative email.and for some of the question marks in your mail..my answers... Have you got this book? nope.. not yet.. have been...
... No problem, its nice when I can give something back to this brilliant community that has helped me so many times! :D I'm not sure of the US prices for the...
I have been trying to understand where to hook the "+" and "-" of the motor (pager) to the freeformed Miller SE assembly. I have been playing with the...
Thanks very much. I usually have to kick myself in the learning process. I have the Junkbot book and was trying to breadboard the Miller SE which had been...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the beam group. File :...
beam@yahoogroups.com
Sep 9, 2006 6:59 pm
54395
Hi Wilf, Just got a chance to implement your design for the new GBSE. I am sorry to report that I could not get this design to function at all. I tried it...
I found some 1381s and should be able to check it out later tonight. I will let you know the results. ... From: Ryan M Hart To: beam@yahoogroups.com Sent:...
it works ok as shown but there is a problem getting the time constants right. Without fine tuning, it can hang because the main cap discharge is too small for...
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