Page 4 of 5 FirstFirst 12345 LastLast
Results 31 to 40 of 43

Thread: Ta-Da! Prototype DC-DC PSU

  1. #31
    Variable Bitrate
    Join Date
    May 2010
    Location
    Australia
    Posts
    378
    Ooo exciting Keep us posted I like overkill and this thing smacks of it

  2. #32
    Variable Bitrate
    Join Date
    Feb 2002
    Posts
    411
    Good! I need something different, I'm tired of my m3 not starting with the car, or not putting out enough on the +12 line. I tried to run my wifi router from it, and it would trip up and reset the computer occasionally. Now I've got the router running battery V, which is fine except it can't take the dip from starting and resets, so I've got a 20 sec delay across the networked things in the car. Ideally I'd like everything running from a single power supply, including the Apple TV 2... That one has a sparkfun dc-dc converter running at 3.4 volts right now, draws less than .25 amps from a 12v supply at full power. I wonder if it would run right off the 3.3 rail.
    Old School MP3CAR.com member!

  3. #33
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,049
    Update! The 5v standby power rail is alive!!! I have only populated the minimum components to get it to power up that rail. I had a mistake that I just found, and fixed with 2 0402 resistors strategically placed Below are 2 pictures.

    The first shows one shows 2 zoomed out waveforms. The one on top is the 5v rail, and the one in the middle is the input voltage. I had the input voltage around 6.5v and then dipped it to about 5.5v and back in human time (slowly). Cars usually swing down to 6v at a minimum, 8v generally when cranking. As you can see the top waveform, the 5v standby rail gets stlightly more ripple (the line is thicker) but it stays at 5v.

    The second one shows the EXTREMELY zoomed in picture of what the 5v rail looks like. The top line is the input voltage, and the squiggly wave is the 5v. Now this may look bad until you look at the scale. Each of the grids is 20mV or 0.02v. If you read the bottom measurements, you will see the average voltage is 4.968v, the maximum is 4.9868v and the minimum is 4.9519. So average regulation of 0.64% with a worst case of 0.962%. That's pretty darned good.




    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  4. #34
    Variable Bitrate
    Join Date
    May 2010
    Location
    Australia
    Posts
    378
    Yay
    Now we just need a 12V rail

  5. #35
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,049
    And a -12v rail, a 5v non-standby rail, a 3.3v rail, and then a 12v rail
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  6. #36
    Variable Bitrate
    Join Date
    May 2010
    Location
    Australia
    Posts
    378
    Ok so it appears it is good that you are building this thing and not me... apparently I am not quite up on what goes into and out of a psu
    Keep up the good work

  7. #37
    Low Bitrate
    Join Date
    Aug 2009
    Location
    Melbourne, Australia
    Posts
    62
    Do we save some kind of idea for a release date.

  8. #38
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,049
    Quote Originally Posted by MagicMan View Post
    Do we save some kind of idea for a release date.
    As soon as possible lol.

    Now that I have figured this out, I hope to populate the rest of it in the next week. If that works, then I would assume a month of testing before ready for beta testing.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  9. #39
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,049
    Just a quick picture update since I have recently been getting more and more PMs on this (which is a good thing )



    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  10. #40
    Constant Bitrate kolton5543's Avatar
    Join Date
    Apr 2011
    Location
    Safford Arizona
    Posts
    170
    WOW! You must be tedious with soldering.
    Quote Originally Posted by Lincolnman View Post
    Your English is fine, don't apologize. You're doing better than most Americans.

Page 4 of 5 FirstFirst 12345 LastLast

Similar Threads

  1. nghost 3 prototype
    By wirelessdreamer in forum LinuxICE
    Replies: 10
    Last Post: 12-10-2008, 05:05 PM
  2. Amber skin prototype
    By aoLhaTer in forum Centrafuse
    Replies: 0
    Last Post: 07-15-2005, 07:50 PM
  3. Got my prototype truckputer runnin....
    By scott011422 in forum Show off your project
    Replies: 4
    Last Post: 05-30-2005, 11:08 PM
  4. New Prototype fully working
    By swifty8083 in forum Classified Archive
    Replies: 1
    Last Post: 07-14-2004, 08:55 PM
  5. Some pics of prototype DIN box....
    By cenwesi in forum General Hardware Discussion
    Replies: 19
    Last Post: 06-01-2002, 10:07 AM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •