Re: [Homebrew_PCBs] Re: homebrew rotary multi-position switch
2004-08-31 by smartdim@aol.com
In a message dated 8/30/2004 11:01:28 PM Pacific Standard Time, ben_englund@techemail.com writes: I ve heard that green LEDs can act as photodetectors. They
Messages
Browse messages
Page 572 of 707 · 35337 messages matched
Re: homebrew rotary multi-position switch
2004-08-31 by ballendo
Garrett, Good tack. You could also use an encoder style pot and a PIC... These encoders are getting pretty inexpensive, and the PIC can take the input and
Re: homebrew rotary multi-position switch
2004-08-31 by ballendo
Stefan, I think your idea will work, but have concern about using sheet metal for the wiper... Is this for a production item, or just a few? Because I d sure
Re: [Homebrew_PCBs] Re: homebrew rotary multi-position switch
2004-08-31 by Stefan Trethan
... I could, but i d rather not if i can avoid it. ST
Re: [Homebrew_PCBs] thumbwheel (was: homebrew rotary multi-position switch)
2004-08-31 by Stefan Trethan
On Mon, 30 Aug 2004 21:23:23 -0700 (PDT), ron amundson ... Usually thumbwheel encoders are only used incremental. like up/down buttons. the absolute
Re: [Homebrew_PCBs] optical encoder (was: homebrew rotary multi-position switch)
2004-08-31 by Stefan Trethan
... Weight makes it continue to spin too long. Better a good fit of a shaft and a bushing with oil between, like a 10-turn pot knob. This gives you resistance
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Stefan Trethan
... Thanks, but they are pretty useless for me. I can t change what i need, the IC expects a 2*10 switch. It is a charger, and meant to be jumpered for cell
Re: homebrew rotary multi-position switch
2004-08-31 by ben_englund
... Maybe do like was already stated earlier and just use LEDs around the dial to indicate position. Then don t put any position indicators on the dial
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by ron amundson
... Could you elaborate as to how..... Especially in a power down condition where upon one could loose track. I take it, there is some trick, as many devices,
Re: homebrew rotary multi-position switch
2004-08-31 by mikezcnc
Could you use multiplexers? That would be more reliable and could have as many switches as you want. Mike -- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Roy J. Tellason
... Capturing the _change_ in position is more like it, depending on where the software that was dealing with it assumed was the position to start with. ... I
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by ron amundson
... So what I gather, is a guy could put a good sized weight on the shaft to create inertia and give a perception of quality, then use optical interrupters to
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Leon Heller
... From: Roy J. Tellason To: Sent: Tuesday, August 31, 2004 12:43 AM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-30 by Roy J. Tellason
... Not necessarily. I have a couple of motors equipped with such encoders. And you have two of them in any given mouse that s out there -- it shouldn t be
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-30 by ron amundson
... Yes, but not at home with limited tools.... Its great in volume production as its super cost effective, but we would take care of the mechanical issues in
Re: homebrew rotary multi-position switch
2004-08-30 by cybermace5
... all i ... piece ... flaws, ... of 2... Would be nice to have a couple more details on the circuit this is going to be connected to. Are you changing a
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-30 by Roy J. Tellason
... Sounds about right. The way they used to do that was to stack two switch wafers, not a big deal. I m sure that such a part is out there and available
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-30 by Stefan Trethan
... I need 2*10 positions, and can only get 2*6 or 1*12. For selecting cell count on a battery charger (no current at all). Almost all handheld meters i ve
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-30 by Roy J. Tellason
... Not me! ... I wouldn t go that far. :-) But I wouldn t do that, either. ... How many positions are you looking for? I ve seen up to 11, maximum, with
Re: [Homebrew_PCBs] Re: New file uploaded to Homebrew_PCBs
2004-08-30 by Cristian
... Thank you, Steve. For the future I ll follow the rule. I m not so familiar with different format s size. Cristian ... Outgoing mail is certified Virus
[Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-30 by Stefan Trethan
Hi, has one of you ever tried making a multi-position switch directly on the PCB like most handheld meters have? I can t gold plate it (yet). I think tinning
Re: New file uploaded to Homebrew_PCBs
2004-08-30 by Steve
I deleted this after I downloaded it, converted it to a 4 color GIF, and reuploaded it. I deleted it again, as if you look in the Files area you will still
?? about kilobuck cnc mill was Re: Round to Square pcb
2004-08-30 by mikezcnc
I was wondering where my message went... ... to ... this
Very Thin Boards
2004-08-30 by pdebrow1
Has anyone used very thin (0.005 ) positive coated copper clad FR4 boards? Injectorall sells them at Digikey with 1/2 oz copper. How well do the copper
Re: [Homebrew_PCBs] RE: making vias (was: Re: Plating thruholes.)
2004-08-30 by Stefan Trethan
... Oh, sorry, should i have mentioned i do that most of the time? ;-) Sometimes the circuit is really too complex, and you need more space. Or you want a
?? about kilobuck cnc mill was Re: Round to Square pcb
2004-08-30 by ballendo
... Yes. ... I think he was rteferring to the DIY-CNC yahoo group. I am only a member here. Steve (Alienrelics) is the listowner. ... I m ... for
RE: making vias (was: Re: Plating thruholes.)
2004-08-30 by Thomas P. Gootee
(SUCCESS!!) For those who were interested in my project to redesign the pcbs in my Curve Tracer product, to eliminate the discrete, soldered wiring that
PCB design: ' Round' to 'Square'
2004-08-30 by Cristian
It was my mistake to start this topic on weekend, when a lot of smart minds are, normally, out of the list. Meanwhile it was converted to some CNC. Please
Re: [Homebrew_PCBs] New file uploaded to Homebrew_PCBs
2004-08-30 by Cristian
... Strange. It was there and valid. I ve opened it to check is OK. For me the answer is: no file there. I ll upload it again. Cristian ... Outgoing mail is
Re: Modifyied GBC H200 laminator does thick AND thin PCB
2004-08-30 by mikezcnc
Thanks, Grant. That s goo news for me. Right now I fell in love with 0.020 PCB material but eventually I will run out of it. Mike ... thou.
Re: [Homebrew_PCBs] New file uploaded to Homebrew_PCBs
2004-08-29 by JanRwl@AOL.COM
In a message dated 8/28/2004 9:56:26 AM Central Standard Time, Homebrew_PCBs@yahoogroups.com writes:
Modifyied GBC H200 laminator does thick AND thin PCB
2004-08-29 by grantfair2001
Mike - you asked if the modified laminator also lets you do thinner and thicker boards. I have some doublesided PCB material which is 12 thousandths of an inch
Re: [Homebrew_PCBs] GBC Laminator on Sale!
2004-08-29 by smartdim@aol.com
In a message dated 8/29/2004 12:27:42 PM Pacific Standard Time, mycroft2152@yahoo.com writes: Hi Guys, This week s flyer for Staples has the GBC H200
GBC Laminator on Sale!
2004-08-29 by mycroft2152
Hi Guys, This week s flyer for Staples has the GBC H200 laminator for $64.94 as a special buy. The regular price is $129.95. If you ve ever condidered buying a
Re: [Homebrew_PCBs] Density of inkjet ink; is black the best color for photoresist?
2004-08-29 by Cristian
... Somebody tested the photo ink, as this is already UV proof. No matter what color. Cristian ... Outgoing mail is certified Virus Free. Checked by AVG
Re: Round to Square pcb - software
2004-08-29 by Dave Mucha
... complicated. ... (as round ), ... a square . ... production. ... If you make pads that are 80 mill square, then two pads of an IC have a 20 mill
Re: Drilling Pcb's - a jig that may help
2004-08-29 by Dave Mucha
Here is another technique that I did when I started. I took a DIP socket and with a small drill, 25 thou or whatever you have, drill out all the pins. this
Re: [Homebrew_PCBs] Re: Round to Square pcb
2004-08-29 by Cristian
Is that about Round to Square? Cristian ... Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.733
Re: Round to Square pcb
2004-08-29 by mikezcnc
Does this mean, Ballendo, that your dilling machine will be able to mill the PCBs? By the way, John mentioned on his site that you are an owner of this group
Re: Round to Square pcb
2004-08-29 by ballendo
How VERY true... If there is machine flex as the bit drills, AND/OR if the drill speed is too slow, you break drills. (speed here means BOTH RPM and downward
Re: Drilling Pcb's - a jig that may help
2004-08-29 by ballendo
... Nick, Here s another technique I useta use, which I didn t have time to post before... It also involves using a perf board and laying out your board at
Re: [Homebrew_PCBs] Round to Square pcb
2004-08-29 by Cristian
... Usually I work with EasyPC from Number One and with Sprint Layout from Abacom (this is good because one can import, transparently, a scanned PCB layout
Re: [Homebrew_PCBs] Round to Square pcb
2004-08-29 by ron amundson
I tired to make it generic. Most software should easily do what you want, just the terms may differ. You might want to check with the user group for your
New file uploaded to Homebrew_PCBs
2004-08-28 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File :
Re: Round to Square pcb
2004-08-28 by Richard Mustakos
Cristian, Are you looking to use a CNC to do milling, or are you looking to minimize chemical use? The reason I ask is that the algorithm for the minimizing
Re: Round to Square pcb
2004-08-28 by crankorgan
... Drilling requires a stiffer machine. Some homemade machines will allow the bit to walk around. It takes less of a machine to mill than drill.
Re: [Homebrew_PCBs] Re: Round to Square pcb
2004-08-28 by Cristian
... This was my original idea. It works for chemicals too. ... If you own a milling machine you can drill the PCB with it, for sure. Cristian ... Outgoing mail
Re: [Homebrew_PCBs] Round to Square pcb
2004-08-28 by Cristian
... Ron, It seems is about a specific PCB software, and a little bit complicated. I ve done my square example manually, using Add Polygon I d like to get
Re: [Homebrew_PCBs] Round to Square pcb
2004-08-28 by ron amundson
Convert your pads to square, set your routing up to 90degree only, and you should get pretty close, but you may have to tweak trace widths. Then create a
Re: [Homebrew_PCBs] Re: Round to Square pcb
2004-08-28 by Stefan Trethan
... If you allow the cnc machine to drill the board it will be even easier to drill... ;-) I ve seen these square tracks a few times on velleman kits, but