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  • kyouryoku8's Avatar
    08-02-2021, 12:00 AM
    I may have found two solutions for pulling out the SD card IO as well, This contains a cable made from a 1 sided pcb which one can solder to https://wiki.tizen.org/SD_MUX#Files SD Card PCB "The adapter is made of...
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    08-01-2021, 03:10 AM
    That's reasonable, I pulled both GNDs down from their pads. I have that sorted for my project. I'm also dealing with low frequency signals. Everything is below 50kHz (although the code executes 2M times a second)....
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 08:20 PM
    I appreciate the salesmanship :p No worries, I always get spares so you'll get that 7th sale. I'm already getting several dozen PCBs, I can just tack this onto the end of my order & I can do the soldering myself. ...
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 08:10 PM
    It's a research project. I started with a proof of concept of 12, moved up to 48, and now I'm here. The teensys have worked great for this. I have the code executing ~2M/s which leaves me ~300 clock cycles for code,...
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 06:56 PM
    I already have 3 grounds coming off of the board. I suppose I should add one so if anyone else uses the design differently they will have a GND available.
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 06:51 PM
    Thank you, I had not seen that breakout before. I also added a cutout for the cap so it will lay flat.
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 06:31 PM
    Thank you, I think I have everything I need. I threw all the dimensions up there because I didn't want to miss something and do it twice. We have a milling type PCB system at the university I will use to make a...
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 07:20 AM
    Unfortunately that's exactly what I need... I'm then going to chain 6 of these together so I have 288 high speed channels.
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 06:00 AM
    Since I only have 7 connections I bumped the connectors down to: https://www.digikey.com/en/products/detail/hirose-electric-co-ltd/DF23C-10DP-0-5V-91/3977785...
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 04:57 AM
    Thanks for that, it's still enough to get me up to 48. Do you know that because you've used these before? If so, I'm curious how you go to those pins.
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-31-2021, 01:08 AM
    better image ^ ~$1 for the flex pcb & ~$1 for the connectors for 12 additional IO.
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-30-2021, 06:20 PM
    I'm looking at something like this
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-29-2021, 06:17 PM
    I am making a PCB to receive the Teensy, and I've thought about pogo pins but I've never used them before. It may be time to try them out. As for my first option, connectors, The best fit I've found so far is ...
    25 replies | 920 view(s)
  • kyouryoku8's Avatar
    07-29-2021, 01:24 AM
    I need a connector for the QSPI memory I/O tl;dr I am working on a project which will require 48 channels of I/O. I have used the teensy 4.0 before and was looking to use the Teensy 4.1 but I am having trouble...
    25 replies | 920 view(s)
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About kyouryoku8

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SMD I/O and SD Card I/O 08-02-2021 12:00 AM
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09-06-2021 02:19 AM
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07-29-2021