100SILEX, de 0 ŕ 100 s: Solder
1408 Â» Cut simple SMT Stencil from common aluminum flashing on your CNC Animodule.com
Cut simple SMT Stencil from common aluminum flashing on your CNC
Hereâ€™s a quick photodoc of how I made a reusable SMT stencil from some aluminum siding I had laying around. Itâ€™s very simple to assemble and works great. Dirt cheap too.
I had picked up a roll of aluminum flashing a few years ago to flash some chimneys I rebuilt/repointed and was curious to see how it would hold up as an SMT stencil.
To buy an SMT stencil frame is near $1000 so I didnâ€™t have much to lose if it didnâ€™t work out.
I cut the frame out of some birch plywood since I had some handy. Really any sturdy frame would do the trick. You could easily glue one together out of some 1x or trim board.
I put a thicker sheet of aluminum down underneath the flashing to give the CNC endmill something sturdy to cut against and clamped it down stretched and tight. My thought there was that If I cut straight on the MDF it might push on the flashing and bend it before it cut through.
A 1mm endmill did the trick. Each pass was .05mm deep.
I pulled the Flashing tight and stapled it to the frame. No rocket science here. I taped up the inside edges so no solderpaste could squeeze between the frame and the stencil.
I had some old screen print hinge boards so I just attached this frame the same way I would a screen print stencil.
The only fiddly part was aligning the first PCB. You have to push around a little and lift the stencil and fiddle with it a little bit. Once I get all the pads lined up correctly I hold it in place and trace around it with a thin tip sharpie marker.
Then you place the PCB in the outline. If you have the height adjusted correctly the stencil is sturdy enough to hold the PCB in place while you print the Solderpaste on it. just hold the stencil frame down and it pushes down on the PCB.
I used a flexible putty knife as a squeegee. It worked fine.
Cleanup was a breeze. Just scrape it off, unscrew the stencil frame from the hingeboard and stick it in the corner till you are ready to do another run.
1167 How to Solder an SMD LED | eHow.com
How to Solder an SMD LED. The small size of the SMD (Surface Mount Device) component and the confined workspace of the PCB (Printed Circuit Board) are the challenging parts of SMD soldering. The best approach is to obtain the proper equipment and to plan out the process, before you actually begin. Working with an LED (Light Emitting Diode) is no...
RAD 100/16 , electrolytic capacitor, 6,3x11mm, RM 2,5mm , Electrolyte Capacitors, radial Electronics, PC Accessories, Network Technology, Soldering, Tools, Batteries, Components, Technics.
602 Free Music Friday â€“ Circuit Ben Â« GetLoFi â€“ Circuit Bending Synth DIY
Circuit Ben is Killing Music Album now is free to download. Enjoy great catchy tunes and top notch production. This is a very good example melodic composition with circuit bent toys.
Bent Stuff used: Casio sk1, Casio sk5, Casio sk100, Casio pt-20, Casio ks-03, Yamaha pss-11, Yamaha pss460, Hing Hon EK-001, Cheburashka!, Jim Bowen/Al Pacino dub siren, Super ultra mega, Fun-box (orgasm toy), Toy Koran (Quran), Cheap Chinese phone toys, Kung Fu toy, Captain Scarletâ€™s car, â€śPound Shopâ€ť keyboard (cost ÂŁ1 new.), Dragonball Z keyrings, Barbie keyboard, Fisher-price tape recorder (now dirty,dirty guitar amp.), George W Bush
and probably about fifty circuits with a soldered output that were bent/killed while recording â€“ auto-destruct!
Non Bent Stuff: Mini Kaoss pad, Gameboy with Nanoloop, Melodica, 5-litre oil can guitar, Acoustic bass, Casio kx-101, Stylophone, Voice
Ben Says that in general songs are as vague as possible and about nothing â€“ thatâ€™s the story he is sticking to
The Lyrics for â€śAllenâ€ť are from â€śCocaine Bluesâ€ť by Allen Ginsberg.
All this was written and performed by Circuit Ben and produced by Lee Gregory â€“ www.myspace.com/randomleeaudio
523 Yamaha CS-01 Resonance Mod
Just to get this up here. I hope to make this clearer soon...
This shows how you can modify the Yamaha CS-01 Mk1 to:
1) have variable resonance control, by hijacking the Breath Control VCF potentiometer
a) remove the 10k resistor near the VCF chip.
b) cut the traces (or lift the pins) of the Breath Control VCF pot that connect it to GND and the Breath Control jack. I lifted the pins just to avoid cutting PCB traces
c) remove the 39k resistor tied to the wiper of the VCF pot.
d) solder wires from one side of the pot and the pot wiper and run these wires over to the holes that used to contain the 10k resistor near the VCF chip
e) I'd suggest adjusting the resonance trimmer that's near the VCF chip to make your new Resonance control self-oscillate near the end of the rotation. why? because this filter gets out of control in a very loud and dramatic way. I don't think this VCF chip was designed for stable self-oscillation - that may explain why, in the CS-01 Mk2, when they gave you analog control of the resonance, they used a different 24dB VCF chip.
2) have variable VCA "drone" by hijacking the Breath Control VCA potentiometer.
a) remove the 1k resistor that grounds usually-closed terminal of the breath control jack to GND
b) solder a 47k resistor from the ungrounded, non-wiper terminal of the pot to -9V.
c) when the VCA drone pot is now fully on, you'll always get a DCO-VCF signal running to the power amp. this mod keeps the VCA only partially open, and you can still superimpose the EG over the drone. I did this because I don't have a spec sheet on the VCA chip and I didn't want to risk having the EG slamming the VCA while the drone was going full on (basically, I don't know the max CV that the VCA chip can tolerate). so if you just use the drone, you'll have to increase the volume at the power amp. But now the front-panel VCA slider actually becomes useful, since if you don't want the EG to affect the drone, just turn that down to nothing!
Sorry I don't have actual pics of the mod up! Perhaps someday soon...
101 - 201