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  1. donkey

    solar query

    Hey beautiful people. Just a stupid question. doing a back yard solar grid for some robotics. using el cheapo stuff for some upcoming projects the setup is a simple panel to controller (am 90% sure its pwm but is labelled MPPT but at the cost I highly doubt it.) controller to battery. now for...
  2. donkey

    Calculator or kicad addon

    Hey all. Silly question here and i know the maths side (not really but hey). What i am doing is laying out a pcb. I want designate point a to point b. But i want the calculator to determine best route given certain variables like resistance, trace area, mm^2, and preferably use a few different...
  3. donkey

    2 mosfets switch

    About to ask a silly question I have an application where i need 2 mosfets to turn on and exactly opposite times. If mosfet 1 is on mosfet 2 is off If mosfet 2 is off mosfet 1 is on Anyone got a circuit diagram for it?
  4. donkey

    multivibrator circuit

    I see everywhere a multivibrator connected toa transformer for an inverter. question is let say I want to change the frequency from 60 hz to higher or lower do I just chuck in a variable resistor and if so instead of which resistor? also I was thinking of more amps, do I just put more...
  5. donkey

    back for a while

    Hello again all, with covid, kidney stones and all the fun that comes with that I got 2 weeks off so visiting old places to keep mind active........ I was gone a while you could have gotten a cleaner in lol
  6. donkey

    remote control issues

    hey all, designing a remote cos I wanna. the reason i chose remote was my TV and set top box seem to share some similar "codes" when i press volume up on set top box the tv turns off. when i press volume up on tv it changes channel..... multiple other examples have been found. I am too cheap to...
  7. donkey

    hi

    just stopping by to wish you all a great holiday/christams/ scrifice to your god etc. off the above topic, nice layout
  8. donkey

    am outta here

    hey guys and girls, thanks for the years of knowledge. moving on to bigger and better things so won't be around here at all. will remember all the advice no matter how weird it was. seeya
  9. donkey

    Inverter Theory

    so I get the whole solar panel charges battery. battery powers inverter thing. so lets say I have an 8kw system (using a big number for a reason), I get a 6kw inverter. (want extra 2kw to charge batteries, charge controller to suit this model is there for this example) so I KNOW that you can get...
  10. donkey

    Solar setup question

    Hey all hopefully last time I ask about solar for a while. ok so will upload a pic to give an idea of what I want to do
  11. donkey

    power station question

    there is NO reason for this question other than I want to know. so I understand the basic of ac theory. a wavelength goes up and down this frequency or hz of the voltage. in Australia the difference is 240volts from top to bottom and changes 60 times per second (so I assume -120 to 120 and back...
  12. donkey

    torque question

    hey guys and girls, just a quick question about torque. lets say I have a motorised device that total weight is 180KG(please use metric) if it was a 4wheeled device with top speed of about 5km and rear wheeled driven how much torque would I need to push the dang thing on a 45degree incline? need...
  13. donkey

    Need Experts Advice On Soldering Irons

    so anyway as always I am trying to make both mechanical and electronic design and I thought to myself how about making an EP soldering iron. with his in mind I thought of finding things that make or break a soldering iron for people. I would like to know several things what wattage are you...
  14. donkey

    stupid Rpi question

    so anyway I am looking at the rpi more and more for whole ton of things, If anyone knows about them can someone tell me if it is at all possible to do something kinda weird. On board they have graphics, would there be a way to upgrade the graphics to higher def and dedicated ram somehow? I don't...
  15. donkey

    Motors

    so anyway I am starting to make stuff, cos that's what I do.... that and swear often, but I think I got the latter covered. Anyway so I need expertise on this, am looking at making a lathe, I see most of them are around 2000rpm SOOOOOOO my question is does anyone know a motor that could handle...
  16. donkey

    For Sale: 3d prints

    well guys, as you probably know I gots me a 3d printer. so I am offering a 3d print or 2 for anyone willing to pay.... at the moment the prints will be slow but I am needing someone to help me out with getting the hang of the printer. cost price will be for print and postage.
  17. donkey

    We Live In A Wonderful World

    so with everything that is coming out lately I thought I would put up a post asking people to contribute the nice things around.... things you thought would never see.. I will start the ball rolling with 3d printers... dang things are impressive on many levels and I never thought we would be...
  18. donkey

    could I ask for a new members area or thread please?

    I was thinking of all the cad and design and programming stuff we have found over the years. while the idea of maintaining such a thread would be a task within itself could I ask for a thread to be stickied somewhere that a moderator could delete posts if needed (virus links etc) to show the...
  19. donkey

    Motor Discussion

    Hey all, just a quicken, lets say I have designed a method of accuratel positioning a dc motor (well its geared and has an encoder on it) would thaat be a better method than using a stepper motor? I am after something that has a lot of torque and is very precise, preferably fast too but the...
  20. donkey

    anyone to help me out?

    so I was wondering if anyone can help me out we got the infamous appstore for apple and playstore for google.... anyone know of a store like steam etc where you can browse and get full programs (Not that windows store, its just not right putting "apps" on windows) so for example I want an...
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