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  1. tedstruk

    Power Supply Transformer Markings

    heres the pics.
  2. tedstruk

    Building an electronic foil surf board

    Wrong... a propeller that spins fast in the water just cavitates... its the propeller design that allows it to push water , not the speed of the fan.. I grew up on an island. I remember when they brought speed props to legality... the fins were about 2" deep across about 5 inches of shaft...
  3. tedstruk

    eprom studys...

    MX R 9401 27C512-15 M16550 KOREA Vpp12.5
  4. tedstruk

    Logitech z506 5.1 speakers - "Keeps turning off"

    1. PC's are notorious for using up precious few resources they have1.... 2. Most have a special set of limited resources which they assign to the system and not the accessories 3. Most PC junkies have a special way they connect stuff and sometimes that uses alot of these resources 4. you will...
  5. tedstruk

    eprom studys...

    I always thought that a prom had individual inputs that triggered specific outputs a bit at a time. I have connected a EPROM to my arduino to see how it works, and it appears that it is programmed for 1 byte only, and then is fired by enabling and disabling the outputs. so I decide if my...
  6. tedstruk

    Power Supply Transformer Markings

    I scrapped a powersupply and one of the transformers in it has 4 pins. assuming it is a buck converter(probably wrong) I examined it very closely... the red dot on top signifies the output side, I think? and the other end has 2 letters on each side of the coil(maybe mould stamps what ever) S and...
  7. tedstruk

    90's vintage cartridges

    After a closer look through the peeky hole. .. It looks like its not a standard Eprom but a hybridized 64 pin, eeprom to control the extra data with. Now for the real brain buster... The system which this cartridge is inserted into- when formatted ...- 9 stacks on each of 10 pages which...
  8. tedstruk

    iPad power supply

    I learned that the conditions nessesary to charge a battery was .oo2 amps. The ones in my radios are 18.85mah. Thats .002 close .01885 the radios use. But I was listening to some guys at a shop and they were talking watts. I thought watts were how much power something was capable of...
  9. tedstruk

    iPad power supply

    ipad at 2%, The PC usb port did 52% overnight
  10. tedstruk

    iPad power supply

    no resistors as of yet, I want to slap a cheap one that works togther for emergency use... I have no specs so I didn't know where to start, I only have the 12w spec from ebay.
  11. tedstruk

    iPad power supply

    I found warts for these, online that deliver 12w for the iPad. I did some math where 1 amp is there and 12 watts are there and there is 12 resistance there. w / i = v v squared / 1 i = r 144/12=12r 12w/1i=12e is the 12r arbitrary? no I think not! so 144/12=12w (1*1)12=12w 12x1=12w so...
  12. tedstruk

    Problem with measuring vibrations (Arduino UNO + step motor + accelerometer)

    in mechanics/machinist rpms are counter productive. There is really no way to "measure the oscillations" of a spinning shaft or eccentric, unless you understand this slight idea I had. 'mechanically its impossible. if a light was positioned parrallel to the shaft, and the eccentric was to...
  13. tedstruk

    90's vintage cartridges

    I happened to aquire one(1) of these obsolete cartridges for my music synthesizer... But it takes a special kind of one of these cartridges called a Stor-Cart32 to store what are called pitch tables-(for you musical geniuses werkmeister and pythagorean) It has a doublesided 15 pins on one side...
  14. tedstruk

    db25 to usb

    the DB25 is SCSI
  15. tedstruk

    Crimping pins on wire harness

    really great idea.. check the manuf and find out what crimper to use too... leave the pins out of it.. find out what crimper you need. there is no such thing as a crimp. or a pin crimp. I am supposed to build my own tools... so think that over. how would you do it... sometimes its easier to...
  16. tedstruk

    interfacing the VB with arduino

    What are my best choices for VB to arduino tutorials ?
  17. tedstruk

    db25 to usb

    I have an old music studio that used a skuzzy series(not printer port) zip drive connected to it to store the songs and data in. The deal is that the port is configured to make professional salable music CDs in stereo. There is alot of configurations that I have to go through to get ready to...
  18. tedstruk

    NP's of a Schematic

    holy heck I wired up my new diodes completelyl backward... sure glad I second check then second guess then be second, cause if I first checked then first guessed and was first, It would probably explode. I have found sparkfun very useful... BUT IT DOESN'T SAY WHAT THE WHITE LINE IS---- I...
  19. tedstruk

    Make experiments safer, my workshop and concepts relevant in my opinion

    Well even sailboats sink when they get holes in the hull... Your studies are supposed to belong to you, not the board. I am still proud of you. I think that is a lot to share.I have never used linux. With TCP-IP you are talking about building a dialup into your sailboat, and then having a set...
  20. tedstruk

    NP's of a Schematic

    now I know you will wonder about me... On the schematic the diodes are created with a vertical bar >>> | <<< and aa solid arrow against one side.. ----->|------ the anode is the arrow --->| and the cathode is the bar... Is this correct? If so the little white line on the diode signifies the...
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