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  1. donkey

    Simple solar powered lights with a battery

    ok so how skilled are you? what size battery you looking at? amp hours matter what type of charger yo using? lipo and standard batteries (AA< AAA etc) use a special charging circuit from memory. SLA batteries take what you give them. what are you going to do with the 3volt battery?
  2. donkey

    USB and battery powered light with cree q5 bulb.

    http://www.gearbest.com/chargers/pp_182669.html?currency=AUD&gclid=CjwKEAiAmqayBRDLgsfGiMmkxT0SJADHFUhPuSM4MNolt0WOmXEiWXFxLH-jv6Y1DwxNMc_oLhNSbBoCjQjw_wcB well theres your charger and battery in one. now you just need a micro USB cable to power the light. hope that helps
  3. donkey

    How can I hook up my usb speakers to a battery pack?

    I have a question..... I understand him plugging it to 5volts that's all fine and dandy.... but its a USB speaker...... the only devices I know that output a signal for a USB speaker is a USB device..... so how did he get it to work without said USB? or did he use a USB device and if so why did...
  4. donkey

    Scary...

    I am not going to name names here. but I do know a person with the exact same last name as mine...... who does his own house hold wiring..... on the plus side I did make sure his life insurance was to be paid out to me and does cover him being a stupid ****hole by doing such a dangerous...
  5. donkey

    CCTV signal

    what connections you using? what DVR? what cameras?
  6. donkey

    Low voltage switches

    there may be interference if you overload the transistor current or voltage specs but otherwise I am pretty sure its all good the simplest way to look at DC voltage is path of least resistance. unless the transistor has a reservoir to store extra power it won't "spill out" onto another path
  7. donkey

    Low voltage switches

    I am a newbie at electronics but this is how I see it there are 2 circuits(its one I know but try to follow me here). electricity follows the path of least resistance. so even though they share a common leg the high voltage will only ever go to its ground and the lower voltage will go straight...
  8. donkey

    Scary...

    you know here in Australia the police, as part of their training, get tasered, shot with a rubber bullet and pepper sprayed. psychologists are usually given a psychological evaluation. I think that all amateur electronic techs should feel the pain of 3 phase going up your right arm. after that...
  9. donkey

    I have found free energy...sorta...

    I was thinking of putting a methane burner on top of every parliament house across the world. we all know most of them are full of..... problem is when the 2 houses (parties, whatever your 2 opposing government mobs are called) the power surges would have to be catered for
  10. donkey

    Android IR blaster

    I typed "ir blaster android" into google and got this..... have you tried researching anything yet?
  11. donkey

    Energy production

    i doubt you could get anything decent from this but still it is possible
  12. donkey

    Energy production

    http://www.instructables.com/id/Harnessing-sound-power/ also a joule thief might make it more useful
  13. donkey

    Android IR blaster

    built in? that means takking your phone apart and doing SMD work what you could do is use the ear phone jack to send out a signal to a infrared LED. then get your programming hat on and make an app to control it
  14. donkey

    Which resistors, capacitors, etc. to choose for H-Bridge DC Motor Controller?

    my theory behind this is start with the motor, max current is 2Amp.(stall, never a good idea to stall it). this gives me an upper limit for current then I would choose transistors to match. when I got the transistors I want I will find the current needed to switch it on then choose the...
  15. donkey

    More length in wire

    because simply put, a wire has resistance. over long lengths its noticeable. voltage and current can be affected.
  16. donkey

    Electronics for robotic arm

    ok so I am an arduino fan cos I suck at soldering. but anyway I am hoping people can help me out. I have the following design in my head raspberry pi - USB hub- arduino 1 -motor controller and rotary encoder, the last 2 will be repeated for each segment of the arm. can anyone tell me any issues...
  17. donkey

    Pencil type soldering iron mod for SMD work.

    ok so what worries me is this guy (am assuming male) was sitting back bored one day and he saw the item and thought,"I could solder with that". if I see one of them I think, maybe I should try harder with the missus...... or I try frothing the milk for my coffee..... but to solder is silly lmao
  18. donkey

    I2C mesh network

    ok so how I understand I2C from https://en.wikipedia.org/wiki/I%C2%B2C shows me a problem. all the info goes through the master.so this means that even though you might have 128 slave devices, they don't communicate directly with each other. if you give us a better idea of your project we might...
  19. donkey

    recreating the wheel... or a 3d printer

    ok so the 2 weeks I have off to start this project has commenced. I have already stuffed up sizing majorly. also I have found I need a better workshop. more tools... but it progresses. secondhand parts and a lot of glue has the prototype together so far.
  20. donkey

    Which Raspberry Pi?

    for something that people know windows 10 is an idea.... personally after installing it I deleted it.... just no fun Linux for pi is so much better, if you know the sudo codes etc. I hate them so am trying to find a hybrid or cheat sheet and make an arduino macro maker. 1 button sends a macro to...
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