Hi metalab! Welche Moeglichkeiten haben wir im metalab, SMD Bauteile zu verarbeiten? Platinen aetzen? SOIC, QFP, QNF/MLF? Lotpaste, Heissluftkolben, Toaster, Lotpasten-/Bestueckungsroboter? Ich glaube, das auszubauen wuerde es bringen, falls wir da unterbestueckt sind. Ich wuerde gerne Projekte mit USP uC machen, aber die USB Atmels gibt's scheinbar nur als SMD (was fuer eines meiner Projekte sogar sinnvoll ist). Wenn das technisch moeglich ist, wuerde ich auch gern einen QFN AVR statt einem TQFP probieren. Da sollte man halt schon wissen, was man tut, weil oft ein/ausloeten werden die Dinger nicht aushalten, fuerchte ich. Also muss ich vielleicht zum Testen einen SMD uC vorher auf eine Testplatine loeten, die in ein Breadboard passt. lg, Bernhard
On Apr 22, 2010, at 16:16 PM, Bernhard Kuemel wrote:
Welche Moeglichkeiten haben wir im metalab, SMD Bauteile zu verarbeiten?
We do this all the time; designing & etching PCB's, manual SMD soldering, solder paste + oven or hot air gun. SOIC, TSOP, SOT, QPF, QFN has been successfully used to my knowledge. I don't have experience with Atmel's USB chips. Last time I checked, they were somehow dependant on having a Windows machine available to talk to the USB bootloader, so I kind of lost interest. We've played a bit with software USB (V-USB from http://www.obdev.at/products/vusb/index.html). The author of that software is also a Metalab member.
Also muss ich vielleicht zum Testen einen SMD uC vorher auf eine Testplatine loeten, die in ein Breadboard passt.
See http://www.thingiverse.com/thing:1904 ~/= Marius -- We are Elektropeople for a better living.
Marius Kintel wrote:
On Apr 22, 2010, at 16:16 PM, Bernhard Kuemel wrote:
Welche Moeglichkeiten haben wir im metalab, SMD Bauteile zu verarbeiten?
We do this all the time; designing & etching PCB's, manual SMD soldering, solder paste + oven or hot air gun. SOIC, TSOP, SOT, QPF, QFN has been successfully used to my knowledge.
Ahh, great.
I don't have experience with Atmel's USB chips. Last time I checked, they were somehow dependant on having a Windows machine available to talk to the USB bootloader, so I kind of lost interest.
IC. I chose Atmels because they were well supported by Linux: Compiler, programmer software, connection via parallel port. What USB microcontrollers are good for Linux? Full or high speed. I'd like to sample random bits from avalanche diode noise and get it into a PC (via USB). And maybe make a BIOS chip programmer (LPC PLCC32), as I can't find a compatible main board to hot flash my chip and I don't like to pay for having it done (only 10e, but still). Maybe I'll use the serial port for this.
Also muss ich vielleicht zum Testen einen SMD uC vorher auf eine Testplatine loeten, die in ein Breadboard passt.
Yes, only dual inline for the bread board. Bernhard
On Apr 22, 2010, at 17:36 PM, Bernhard Kuemel wrote:
What USB microcontrollers are good for Linux? Full or high speed. I'd like to sample random bits from avalanche diode noise and get it into a PC
I don't know. Maybe a USB2serial adapter is your friend in that case, or use smth. like an Arduino which already has a usb2serial chip onboard (from FTDI). If this is too slow for you, having a dedicated USB controller uC is a good next step, which requires some investigation when it comes to good non-Windows compatibility.
Yes, only dual inline for the bread board.
It's a free design, so you could play with it to make it DIP compatible. ..or design one from scratch, or buy one.. ~/= Marius -- We are Elektropeople for a better living.
Teilnehmer (2)
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Bernhard Kuemel -
Marius Kintel