deskthority

bpiphany

I'm totally sure I didn't need to flash any bootloader when I built these They come with Atmel's loader. As does the TQFP ATmega32u2. Factory fresh they jump to the bootloader on power up. Technically I suppose they are programmed with a firmware that simply does a software jmp to it. I haven't ...

bpiphany

To be fair, the Elf board would come with a bootloader while the keytee requires a USBasp programmer to make it accessible via USB.
Really? I thought ATMEGA32U2 has a DFU bootloader built-in. In fact, I'm sure of it—I didn't need an AVR programmer to flash the firmware on my xwhatsit controller ...

bpiphany

__red__ wrote: So, we never did find out how those earrings went down...

She was happy for them =) I think she may be struggling to find the occasion to wear them though...

bpiphany

7bit wrote: The goal is the Gerber files, so I will write a tool myself that shortcuts all of those intermediate formats, so no painful GUI must be involved anymore!
:ugeek:

Yes please, a mind reading, gerber producing interface could come very handy.

bpiphany

I commonly set the position of the topmost leftmost key at (50.5mm,50.8mm) when designing mainboard PCBs. Because that is 2" and easy to navigate back to. And it doesn't interfere with the KiCAD page boarders. The 19.05mm/8=2.3815mm or 0.75"/8=0.09375" grid is very handy when placing switches. If I ...

bpiphany

But still.. Make it narrow enough to fit between a row of switches. 0.1" pitch will just make it very long... And I really think 0.05" should be solderable by most people. And I would stick to a separate USB connector, and separate multiplexers. Make stuff fit between switches. All that's of course ...

bpiphany

That Kimera looks pretty big still.. Is there any schematic for it? And isn't that a resonator? I didn't think it would run USB very well without the accuracy of a crystal or oscillator.

Why not go small, and I mean small, if you're looking at QFNs anyway? (Perhaps the ARMs don't come in anything ...

bpiphany

How does the price for assembly differ between QFN vs. parts with leads? When I was looking around some time ago. QFN and 0402 seemed much pricier than the next step larger.

What are the arguments moving to ARM? Are they cheaper, smaller, newer, more powerful, running on lower power?

I'm obviously ...

bpiphany

My God, you're on page 12 already.. I haven't read it all.

All I have to say is that QFN's are a bitch to solder at home. At least quickly and reliable. There may be people with more assembly skills than me out there, but I tend to get a lot of solder bridges, or unconnected pads, always requiring ...

bpiphany

Didn't someone post about that already?.. I'm sure I saw it before, but it may have been somewhere else. Kinda sums up the community in a concise way =)

Since we've dug it out I'll post a video too! Dip soldering is reluctantly becoming a thing at Bathroom Epiphanies =D

bpiphany

webwit wrote: That is by design, so we can continue to taunt you.

That's fine with me =) I've changed the subject to be more accurate.

bpiphany

19 votes, 12 no, 5 yes, corrected for Daniel's mistake.

I ended up giving her the weather station for Christmas. It was a bit surprisingly a big success! She liked the earrings as well. Agreeing black probably would have been wearable on more occasions. She thinks I'm a bit weird, but that's ...

bpiphany

Don't worry guys. I've got the situation under control. I have another one for her as well - a weather station... Yeah, I'm screwed =D

Seriously, I just wanted to show off the sparkly ICs.

bpiphany

Yeah, we'll see. I think they turned out quite alright =) They are probably not her style. On the right occasion perhaps. They are not for Christmas, but her birthday in a couple of days. I'll let you know the correct answer then...

I found those spiffy transparent ICs in some Microsoft mice. The ...

bpiphany

She said she wanted earrings..

: earring.jpg (349.77 KiB) Viewed 5553 times

bpiphany

I'm only glad to help. There is a PPA with daily build of KiCAD here https://code.launchpad.net/~js-reynaud/+archive/ubuntu/ppa-kicad I'm currently using that. There was a period of time when there wasn't a PPA, and I had to compile myself. And there was often some sort of trouble with that =P KiCAD ...

bpiphany

I just wanted to get the terminology correct, just in case someone picks it up from here =) If asked, I couldn't say I had any source at hand to back up what I just claimed about the definitions of what is a decoder/demultiplexer/multiplexer...

I honestly thought I multi plexed a signal when I put ...

bpiphany

This is great =)

I just tested with the DT logo example in the pretty format (cause that is the good shit). It doesn't seem to add the layer tags, (layer B.Cu) and so on, to the polygon items. At least not for me, but I may be doing it wrong.. I edited the kicad_mod file by hand to add layers, and ...

bpiphany

<wall of text>
There is a slight difference between multiplexing and decoding. In decoding you take a binary encoded input and activate one exclusive output depending on the binary code. This way 3 bits make it possible to choose between 2^3=8 outputs.

That's decoding. When multiplexing (actually ...

bpiphany

Something like this, for a start...

: matt3o_1.png (11.57 KiB) Viewed 1906 times

bpiphany

Well, I'm still not very good at electronics in general... This digital matrix scanning thing is just very simple. My skill lies rather in routing out traces in KiCAD =)

bpiphany

I could do it. Any particular reason you need it in KiCAD? It's possible to import images to KiCAD which will then be transformed into gerber if that is what you need. That should be very quick if you can take a scan of the copper traces. If you need something with a schematic and real traces that ...

bpiphany

Seems like this is something I did.. I probably just made the numbering up as I went. As long as the numbering is the same on the schematics symbol as on the component footprint, I think it's really up to the designer to choose =) It may be backwards to the norm with pins numbered counter clockwise ...

bpiphany

If you use a scanner, place a good ruler (or two perpendicular) in there as well. Then you can calibrate the image by calculating the actual pixel size. After that the measure tool in your image editor should be very useful.

bpiphany

This happened yesterday when driving to work - I already contacted the producer of this hub and wheelset and I will get a repaired one back:

http://i.imgur.com/ix6JaXt.jpg

I'm not sure what the hub manufacturers say about radial (0-cross) spoke patterns. Since so many bikes come with the front ...

bpiphany

The bakfietsmoeder . They are evil, they are everywhere, they make their own laws, they own the road. It's like Mad Max, but then worse.

I'm one of them... No, I'm generally respectful in traffic. I run red lights, but only when intersections are clear or crosswalks empty. I go against traffic ...

bpiphany

From PCB to char in 120 seconds...

full_power.png

With a similar setup as in http://deskthority.net/workshop-f7/toaster-smd-re-flow-oven-t6861.html#p210768 I made a test run of the oven before adding the relay or any insulation. I pulled the power when I the thermocouple reached 250°C. I should ...

bpiphany

scottc wrote: Yeah, I agree with Halvar on this one. Useful chirp indeed! It's certainly easier than eyeballing:
Code: Select all
while true; do dmesg | tail -n 5; sleep 5; done
in a terminal. :P

I have a monitor more or less dedicated to

Code: Select all

watch -n 1 "dmesg | tail -24"

=)

bpiphany

I'm waiting for the relay, and some glass fiber insulated wires to finish it up. Other than that it's more or less finished. I haven't added insulation yet, don't want to mess around with that until I screw it together the final time..

The most interesting parameter to find out about is what ...

bpiphany

The story

Thinking it was about time to move on from my toaster re-flow oven, I bought a mini oven (aka toaster oven) from one of the big Swedish hardware chains. It came with one baking plate and one grate (and a nifty tool to grab them when hot). I figured the plate would be good for spreading ...

deskthority

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Should she hate me?