Oh, pretty nice
Thanks for the link, probably I will look into this some time.
But I probably will use the things that I have at home
  | |||||||||||||||||||||||||||
How to power netduino without USB?
Started by NeonMika / Markus VV., Feb 21 2013 06:33 PM
usb power power supply car battery battery
24 replies to this topic
#21Posted 22 February 2013 - 02:16 PM Oh, pretty nice Thanks for the link, probably I will look into this some time. But I probably will use the things that I have at home NeonMika.Webserver
If you need help with NeonMika.Webserver, please just leave a note in the thread and/or contact me via Skype
----------------------------------------------------------------------------------------------------------------------------------------------------------------------- #22Posted 22 February 2013 - 02:27 PM i like that usb power supply thingy, its what i suggested, a swichting regulator from ebay (LM2596) - yeah in the post before i mentioned the wrong one, i corrected this.
i use them a lot.
about noise: well that depends: when i use a cheap cellphone charger i get a lot of noise, but from a battery or a regulated power supply i get no noise at all (with the voltage first stepped up, than stepped down again, so 2x switching)
about the design: i think the chinese use the standard design from the datasheet.
there are also some versions that have current limiters, with them you can even charge li-** akkus. its also kind of protection, so no fuse is needed.
(well, i just have the normal ones, when i short them they die, when i use more current than they can supply they drop the voltage a lot) #23Posted 22 February 2013 - 06:33 PM Current draw for just the boards with power led on (barrel jack 7.5 vdc applied):
#24Posted 22 February 2013 - 07:12 PM how did you get this values? doesent sound right to me. was running code with a loop on all devices? (my mini consumes ~30ma with fresh firmware install w/o program, but ~100-120ma with some code running) #25Posted 22 February 2013 - 11:12 PM I plugged each board into a precision power supply that displays applied voltage and the current that is being used.
Barrel connector input with the power supply programed at 7.5 vdc. No IOs other anything else connected. Some may have programs running, I did not erase boards, All have current firmware loaded. https://www.dropbox....nm/IMGP0265.JPG
Also tagged with one or more of these keywords: usb, power, power supply, car battery, battery
0 user(s) are reading this topic0 members, 0 guests, 0 anonymous users | |||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||
This webpage is licensed under a Creative Commons Attribution-ShareAlike License. | |||||||||||||||||||||||||||