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How to Make a Prop Less Stressed? — Parallax Forums

How to Make a Prop Less Stressed?

HumanoidoHumanoido Posts: 5,770
edited 2013-08-02 16:22 in Propeller 1
1) Decoupling capacitors on both sides of DIP chip
2) Route VSS/VDD to VSS/VDD on other side of chip
3) Well regulated/filtered power supply
4) Shortest wires in the circuit

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Comments

  • Heater.Heater. Posts: 21,230
    edited 2013-07-29 04:25
    What is stress in this context?

    I know you like lists so here goes:

    5) Don't run it at too high a frequency. Perhaps not stressful as such it just may not work reliably.
    6) Don't suck too much current from the port pins.
    7) Don't apply too much voltage to the port pins. Beware of static and back EMF from inductors.
    8) Don't run it outside of whatever the operating temperature spec. is.
    9) Don't subject it to extreme g forces. Are they spec'ed anywhere?
    10) Don't subject it to corrosive environments.
    11) A nice back rub:)
  • Dr_AculaDr_Acula Posts: 5,484
    edited 2013-07-29 04:33
    Don't give it to Cluso. He will cut half off and try to sell it to you as an "improved model" :)
  • JonnyMacJonnyMac Posts: 9,107
    edited 2013-07-29 09:59
    12) A dry Martini; stirred, not shaken. (see #9) :)
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2013-07-29 10:04
    #13. Just because it says that an i/o pin can operate at 25 ma doesn't mean that all 32 should be loaded at 25 ma at the same time. Try driving everything at 1 ma or less... unless you have a good reason to use more current.

    #14. Have a good night's sleep before you do your final check and power up that Propeller project you just built.
  • Mike GMike G Posts: 2,702
    edited 2013-07-29 10:30
    #15 a morning bike ride.
  • wmosscropwmosscrop Posts: 409
    edited 2013-07-29 10:39
    16) Always use the principles of Feng Shui when designing and (especially) operating circuits.
    17) Use only "good" electrons for power.*

    *Years ago, there was a very expensive home a/v power supply/conditioner that claimed it filtered out "bad" electrons. No mention of what it did with them, or how often you had to empty the bucket.

    Walter
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2013-07-29 11:34
    Bad electrons are the one's with spiking hair... good electrons are bald. Hence all the spike problems.

    #18. If you are unable to succeed, read the documentation.
  • Heater.Heater. Posts: 21,230
    edited 2013-07-29 11:59
    #19. Goto #14.
  • skylightskylight Posts: 1,915
    edited 2013-07-29 13:17
    20. Visit this forum and ask questions, learn new things that otherwise may cause stress
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2013-07-29 18:04
    21. Put some Sting on while you are working with it.
  • Cluso99Cluso99 Posts: 18,069
    edited 2013-07-29 18:33
    #22. Visit a Stress Therapist.
    Dr_Acula wrote: »
    Don't give it to Cluso. He will cut half off and try to sell it to you as an "improved model" :)
    That's a bit below the belt ;)
  • kwinnkwinn Posts: 8,697
    edited 2013-07-29 19:51
    Cluso99 wrote: »
    #22. Visit a Stress Therapist.


    That's a bit below the belt ;)

    Hmm, I think it's fair. What you did to it is a bit like being cut off below the belt but above the knees ;- )
  • Heater.Heater. Posts: 21,230
    edited 2013-07-29 20:16
    #23. Don't mention XMOS in earshot of your Propeller.
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2013-07-29 20:20
    #24. Don't force it to play nice with 99 other Props. Thinking it's part of some sort of SuperComputer will give it an unhealthy complex.

    -Phil
  • Heater.Heater. Posts: 21,230
    edited 2013-07-29 20:35
    #25. Don't ask it to do anything that is clearly impossible.
  • Clock LoopClock Loop Posts: 2,069
    edited 2013-07-29 21:58
    #26 - if you do happen to try to make it do things that no sane electronic engineer would attempt(like program props in parallel), use these
    [IMG]http://media.digikey.com/Renders/Texas Instr Renders/DRT-3-SOT Pkg_sml.jpg[/IMG]
    http://www.digikey.com/product-detail/en/TPD2EUSB30ADRTR/296-28153-1-ND/2520840

    2, 4-CHANNEL PROTECTION SOLUTION FOR SUPER-SPEED (6 GBPS) USB 3.0 INTERFACE


    The TPD2EUSB30, TPD2EUSB30A, and TPD4EUSB30 provide 2 and 4 channel ESD and surge protection
    solutions in space saving, flow-through packages.

    These devices have been designed to protect sensitive components which are connected to ultra high-speed data and transmission lines.
    These devices also offer 5 A (8/20 μs) peak pulse current ratings per IEC 61000-4-5 (lightning) specification.

    The monolithic silicon technology allows matching between the differential signal pairs. The differential 0.05-pF
    capacitance ensures that the signal distortion due to added ESD clamp remains minimal at high-speed
    differential data transmission.

    The TPD2EUSB30A offers low 4.5V dc break-down voltage. The low capacitance and break-down voltage,
    coupled low dynamic resistance, make the TPD2EUSB30A a superior ESD/ surge protection device for highspeed differential IOs based off ultra-low voltage process nodes.

    The TPD2EUSB30 and TPD2EUSB30A are offered in space saving DRT (1 mm
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2013-07-30 01:53
    #27. Take a break every 6th-7th day and seek the comfort of nature, pets, friends, and family. Weekends were many for rest, not stress.
  • lanternfishlanternfish Posts: 366
    edited 2013-07-30 03:11
    #28. Don't drop a protoboard 4.5m to the stage floor and expect it to work.
  • Mark_TMark_T Posts: 1,981
    edited 2013-07-30 05:34
    #29 - try to avoid Van Allen radiation belts.
  • Dave HeinDave Hein Posts: 6,347
    edited 2013-07-30 06:31
    #30 - Change it's EEPROM every 100,000 writes
    #31 - Always use a zero-insertion-force socket
    #32 - Props need to sleep. Put it in sleep mode when not using it
    #33 - Running your Prop above 80 MHz will shorten its life. Keep it slow.
    #34 - Older Props need less power. Reduce the voltage a few micro-volts
    #35 - Exercise your Props every day. Don't let them sit on a shelf for long periods of time
  • mindrobotsmindrobots Posts: 6,506
    edited 2013-07-30 08:06
    #36- take it for a Spin

    Avoid lists in advice columns - too much performance pressure.
  • HumanoidoHumanoido Posts: 5,770
    edited 2013-07-30 09:01
    #37 - Feed it serial in the morning for a quick start.
    #38 - Let old props run slow or remain idle.
    #39 - Let it play a game of SD Cards to relax.
    #40 - Do not take away its job!
    #41 - Don't keep it lonely, let it play with other props.
  • lonesocklonesock Posts: 917
    edited 2013-07-30 09:12
    I really wish this compiled:
    #42 - CMPSUB PI, BYTE
  • Heater.Heater. Posts: 21,230
    edited 2013-07-30 10:06
    #43 Don't tax it's memory.
  • skylightskylight Posts: 1,915
    edited 2013-07-30 10:18
    44. when you post, don't forget the stamp!
  • jazzedjazzed Posts: 11,803
    edited 2013-07-30 10:45
    #45 Keep it out of language wars.
  • Christof Eb.Christof Eb. Posts: 1,201
    edited 2013-07-30 11:54
    Use a compiler instead of spin and reduce from 80MHz to ? 5MHz?
    Christof :-)
  • TyroneRTyroneR Posts: 22
    edited 2013-07-30 18:36
    #46 lol :lol:
  • HumanoidoHumanoido Posts: 5,770
    edited 2013-07-30 23:10
    #47 Don't let it get FAT16/32.
  • bsnutbsnut Posts: 521
    edited 2013-07-31 01:16
    #48 Do the #9 only again without doing anything else a few times.
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