19513 Results for "《 예약문의 OIO↗8489↗8306》선릉레깅스┛Еimportanceム강남레깅스룸레깅스룸ㅂheavenly 레깅스룸강남레깅스 강남레깅스룸⊥선릉레깅스ゥfiercelyり"

anticipation, neoden, parts ordering, BOM.
Log from LayerOne 2014 Conference Badge
we're still waiting on a tracking number for the PCB's, the conference is in just over a week! and i can't finish the code til we get the first one made... oddly enough this hasn't been the closest we've cut it, but its getting there.since there...

fedex and wildfires
Log from LayerOne 2014 Conference Badge
It's wildfire season, but Fedex managed to get our boards from Malaysia to us in good time, unfortunately there was a cock up in the ordering department and they shipped to the billing address, we'd left there about 15 minutes before they showed up with...

Badge PCB's Arrived
Log from LayerOne 2014 Conference Badge
After delays, e-test errors, shipping problems, wild fires and 6 revisions. These completely untested hopefully 4 layer PCBs have arrived. I'm probably just being paranoid but they sure look like 2 layer.Also Arrow decided that I didn't want overnight...

Finally all the PCB's in one place
Log from LayerOne 2014 Conference Badge
left side, LF antenna, middle HF antenna, right badge board, top combined HF/LF antenna.The late nights/early mornings have started. The HF antenna is marginal right now so we just need to get the right caps/inductors added, but it did read. The LF of...

Post LayerOne
Log from LayerOne 2014 Conference Badge
Well layerone has been and gone, and apparently it was great, i don't know since i was in the back room getting a couple of hours sleep coding, while the others around me soldered boards together. I'm usually one to write up logs as they happen or just...

Prototypes ahoy
Log from Analog CPU Gauge
With motors in hand, I built up a quick prototype. The X27 motors are designed to only move a small pointer. They draw so little current (under 20ma at 5v) that they can be driven by PIC and AVR micro pins directly. Soldering wires to the thin pins of...

Putting a Face on a Gauge
Log from Analog CPU Gauge
With the PCB and parts finally back, and working pointers printed in safety orange, I started assembling. About 10 minutes of soldering later, the finished board looked greatNow I needed a face for my gauge. I broke out word for windows (I know,...

Preliminary BOM and rough costing
Log from Arduino-Compatible FPGA Shield
Did a preliminary BOM today and selected a few key components, incl. the Spartan 6 variant I'd like to use and the SDRAM and Flash devices (may go with a BGA SP6 package with more IO...no risk yet to the design, regardless of what I choose). All...

Setup git repo for project
Log from Arduino-Compatible FPGA Shield
For those interested, I setup a working directory on git for this project (https://github.com/sfgit/FPGA_Arduino_Shield). I've uploaded a few libraries today also for the FPs and a !very! generic PCB (just the imported board shape and some parts...

Updated Flash Memory Choice
Log from Arduino-Compatible FPGA Shield
Realizing I've got heaps of room on this board, I've gone ahead and tweaked my choice of Flash memory. In this case, I'm still doing SPI programming of the FPGA, though using a Spansion part (at least for prototypes...I'll try and cost this down...

Top Level added, breakout, PCB progress
Log from Arduino-Compatible FPGA Shield
Uploaded a heap of stuff to git. Working on video now. This includes two layers of top level documents that show sheet to sheet connectivity between SPI and the FPGA and also have the breakout for the FPGA IO and other various items. Added...

Power supply uploaded to git
Log from Arduino-Compatible FPGA Shield
Uploaded the power supply design to git hub today. The supply is laid out in a way to allow either driving the system from the Arduino's 5V supply or using an external power adapter. The Arduino's 3V3 supply is tiny (very little current,...

0.00499" isn't 5 mils
Log from Arduino-Compatible FPGA Shield
...But it's enough for the board house to balk at, even if they can't mfg to those tolerances. Oh well, released a slightly modified Gerber to deal with some "roundingness" in the mfg outputs and ensure things are a little cheaper overall (under...

Added some status LEDs / feedback
Log from Arduino-Compatible FPGA Shield
I went ahead and added feedback from the fpga DONE pin via the addition of a status LED. Also added a jumper that enables that feedback to be sent back to the Arduino board. The jumper gives the option to route the DONE pin to the Arduino...

Uploaded latest images - SRAM killer
Log from Arduino-Compatible FPGA Shield
Ok, normally I don't complain about hand soldering stuff because normally it's pretty straight forward but this was a lesson I learned years ago come back to haunt me all over again. Rule #83: Tent the vias beneath your BGAs! Especially if...

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