Re: [Homebrew_PCBs] smallest practical SMD for homebrew ?
2009-07-26 by DJ Delorie
... I use 0603 by default; I see 0805 as big . I don t usually use 0402 but I don t find it difficult. I ve done 0201 and 01005 with home-etched boards,
Messages
Browse messages
Page 250 of 707 · 35337 messages matched
Re: smallest practical SMD for homebrew ?
2009-07-26 by javaguy11111
0402 is my standard size. Especially for decoupling caps, but also resistors. I use 0603 or larger if I need the extra power dissipation. I have done a few
Re: Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-26 by Ben
... I have used Sodium Hydroxide to clean up some small spills on counter top and floor. Ben
smallest practical SMD for homebrew ?
2009-07-26 by Adam Seychell
Following the recent posts on BGAs, I m curious what people consider the lower size limit for SMD to when doing home brew PCBs and projects. I used to use 0805
Re: [Homebrew_PCBs] Cheapest sockets for BGAs
2009-07-25 by DJ Delorie
I ve done 0.5mm CSP (5 pins) but I d rather not do even those.
Re: [Homebrew_PCBs] making surface mount boards
2009-07-25 by DJ Delorie
... Seems to work OK for me. Given it starts at room temp, not all of the six minutes is hot . ... You can do double sided in an oven, but for hotplate, I
Success story - PCB making using toner transfer method (UK)
2009-07-25 by baracudaztiger
Hello, I just wanted to share my success story with PCB making using toner transfer method. After little bit of experimentation especially with various paper
Re: [Homebrew_PCBs] Cheapest sockets for BGAs
2009-07-25 by Adam Seychell
... I take my hat off to anyone using a high pin count BGA on their home brew PCB. 0.5mm pitch quad flat no leads (QFN) is furthest I ve dared to go. Adam
Re: [Homebrew_PCBs] Cheapest sockets for BGAs
2009-07-25 by leon Heller
... From: AGSCalabrese To: Sent: Saturday, July 25, 2009 12:23 AM Subject: [Homebrew_PCBs] Cheapest
Re: [Homebrew_PCBs] making surface mount boards
2009-07-25 by Stefan Trethan
The six minutes warmup time is what frightens me off, I know it is only at peak temperature for a much shorter period but still.... Now, how to go about
Cheapest sockets for BGAs
2009-07-24 by AGSCalabrese
What are the cheapest sockets for BGAs ? ( ball grid arrays ) Might one be able to adapt a socket from a socket 775 CPU ? Best Gus S. Calabrese Denver , CO
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by Simao Cardoso
... Ok it s easier for who own a cnc router. There is also some spray or so of peelable silicone soldermask for making this, need to be exposed and developed.
Re: [Homebrew_PCBs] Re: Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-24 by Simao Cardoso
... It s more I need someone who helps me find a way to remove ferric chloride from the floor completely... And the subject Accident!! I have ferric
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by DJ Delorie
... I did that for one board I made, it worked fine. But it doesn t work for me with 0.5mm pitch TQFPs because my drills aren t small enough. And it s faster
Re: [Homebrew_PCBs] Re: making surface mount boards
2009-07-24 by DJ Delorie
... I had a friend over doing his first place-n-reflow (it was going to be his board, after all) and I answered many of his concerns with relax, it will
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by Kerry Wentworth
... Positive displacement pumps are the most accurate, time/pressure would probably be good enough. Epoxy is often dispensed with a stamp, that might work for
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by Simao Cardoso
... Was posted here before an url by a member with his impressive photos of solder stencils made just drilling holes on a metal sheet in the center of each
Re: making surface mount boards
2009-07-24 by roycepipkins
I ve found hand syringe dispensing to be pretty forgiving. Sometimes I even connect both pads of an 0805 with the paste on accident (momentary loss of
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by DJ Delorie
... That s what I ve got too. No temperature control, though - the warm-up curve is good enough for me as-is. I *do* have to let it cool down between boards,
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by Henry Liu
What s a good pneumatic dispenser? If it has an electronic on/off switch, I hook it up to my cnc with a relay + M code switch. I think if I do it a lot then
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by Stefan Trethan
Instead of a skillet I bought a cheap electric cooking plate and put an aluminium plate on top. The temperature is controlled with an industrial controller
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by DJ Delorie
... A little, but as long as they re consistent you ll be OK. It s when you have one big one and one little one that you risk tombstoning. Look for a diameter
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by Henry Liu
... Does the drop size matter? Does it need to flat? ... Any links to the aluminum foil method? I saw http://www.pololu.com/ will print mylar pretty cheap.
Re: [Homebrew_PCBs] making surface mount boards
2009-07-24 by DJ Delorie
... Yes, you can use a syringe. I ve done that plenty of times. Not as predictable as a stencil, but it certainly does work. If you have a photo-UV home-etch
making surface mount boards
2009-07-24 by Henry Liu
I ve always just had someone else make/assemble a surface mount board whenever I needed it for work (being a theorist means you don t do that much real work)
Re: [Homebrew_PCBs] Re: Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-24 by Donald H Locker
Loosely, with Google translate assistance: I need some help to remove ferric chloride from the floor. I tried hypochlorite [a.k.a. bleach] with no reaction.
Re: Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-24 by Steve
In English, please. Steve Greenfield listowner
Re: [Homebrew_PCBs] Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-24 by Simao Cardoso
... You have taken all the fun. I was expecting Gracias! Só em inglês é que tem piada!
Re: [Homebrew_PCBs] Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-23 by Andres Hernandez
Thank you it was a very useful information ________________________________ From: Simao Cardoso To: Homebrew_PCBs@yahoogroups.com
Re: Tape for toner transfer
2009-07-23 by bebx2000
Might I suggest autoclave steam tape from American Science & Surplus? To Wit (from product description): Steam Tape Looks like ordinary masking tape, 1 wide x
Re: [Homebrew_PCBs] Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-22 by Simao Cardoso
For removing Ferric chloride you should use oxalic acid. You can buy it as a cleaning agent. Widely available on ebay too, is cheap. Oxalic acid work very good
Accidente!!! tengo cloruro ferrico en el piso !!!!!
2009-07-22 by afhernandez79
Necesito de alguien que me ayude a deducir como remover totalmente el cloruro ferrico del pìso.... He tratado con Hipoclorito pero no veo ninguna reaccion.-
Re: mini header spacing?
2009-07-22 by felipeuderman
... Hello Henry, I am not with my printer here now, but indeed the mini headers look less then 0.1 spacing. Can´t you just measure it?? []´s - Uderman
mini header spacing?
2009-07-22 by Henry Liu
I m building this breakout board to ease some signal monitoring on this inkjet project. Does anyone know the size of the mini headers on the Epson pcb boards?
Re: C88 lowering mod
2009-07-22 by felipeuderman
... Hello Willian, thank you for the answer. As I understand it, you have managed to place the sensor on a position that it will be activated by the pcb at the
Re: C88 lowering mod
2009-07-21 by wnnelson0
The sensor was just moved to the front of the printer. This allows for the paper sensing without the notch cutout in the carrier. In the position I show in the
Re: C88 lowering mod
2009-07-20 by felipeuderman
Hello William (and others that have worked with this printer), I am trying to mod this printer (in fact a c63 wich I was told it is the same printer), like you
Re: Inkjet PCB ink
2009-07-19 by bobdring
... I m going to use an Epson TX100 (bought 3 but have not started conversion yet). I have a set of empty refillable cartridges for them. ... This is what I
Re: [Homebrew_PCBs] Re: Inkjet PCB ink
2009-07-19 by Surf Thenet
My thought was: will these inks be capable of the heated toner transfer method that is proven with laser printers, and if so, can this ink be used in a
Re: [Homebrew_PCBs] Re: Inkjet PCB ink
2009-07-19 by Michel Baguet
Interesting inks. Must be fine for printing solder mask or top overlay. I see using it in a flatbed inkjet printer like Volkan use. Mike ... From: drmail377
Re: Inkjet PCB ink
2009-07-19 by drmail377
How would you go about trying these inks? Inject them into a consumer inkjet cartridge? These are designed for use with industrial/commercial print heads like
Inkjet PCB ink
2009-07-18 by bobd@micro.com.au
Anybody tried this ink? http://www.hexionchem.com/Products/Main.aspx?id=3630 looks like Hexijet and Hexilok might be worth a try. They are UV curable resin
Re: Micro-Mark 83213 MINI METAL SHEAR / BRAKE
2009-07-17 by Lee Studley
Cool, I ll try that too. Might work for more than one board at a time if they are held together like in the sliding box that that guy in the DIY channel does.
Re: Micro-Mark 83213 MINI METAL SHEAR / BRAKE
2009-07-17 by Ben
... I have one of the old Kepro shears, has a 12 blade, it has a pretty good angle on the blade. Boards that I normally cut are upto 1/16 FR-4 upto 8 wide.
Re: Micro-Mark 83213 MINI METAL SHEAR / BRAKE
2009-07-16 by Lee Studley
Hi Stefan, Yes I did have that problem, but I clamp the board with a plate over top to keep that from happening. the HF unit has a spring loaded bar that
Re: Yet another CuCl Regeneration Scheme
2009-07-15 by Andrew
... They use it to help neutralise the smell of the dope. It (O3) is probably as toxic to plants as it is to people. CO2 is what they use to help it grow.
Re: [Homebrew_PCBs] Re: Micro-Mark 83213 MINI METAL SHEAR / BRAKE
2009-07-15 by Stefan Trethan
Does your cut stay straight with the angle? I have some difficulty with the cut always pulling toward one side using a lever shear (which admittedly has an
Re: Micro-Mark 83213 MINI METAL SHEAR / BRAKE
2009-07-15 by Lee Studley
Hi Steve, I bought a larger 24 cheap Shear/Brake/Roll from Harbor Freight and had similar issues. the casting even broke at the base. I repaired the base by
Re: Yet another CuCl Regeneration Scheme
2009-07-15 by Dave
... Oh, I don t know that it can t work. In any case, you ve opened up a few ideas which should be explored. Normally, humans are quite sensitive to Ozone
Micro-Mark 83213 MINI METAL SHEAR / BRAKE
2009-07-15 by Steve
From time to time, there have been threads on this list regarding how to cut PCB material. Thought I d pass along my experience with one particular tool.