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Topic: Power management with arduino sleeping (Read 2156 times) previous topic - next topic

buton


So i have a question i hope you guys can help me...

i have my arduino hook to a lot of stuff :
https://www.youtube.com/watch?v=8JfnhfZiMMM&feature=youtube_gdata_player

www.diveduino.com

so i want to implement some power saving here,  by sleeping the arduino and also block power to the LCD and open log..
i think that having and ouput from the arduino to a small relay to power the other electronics i do not know if there is an especial IC that does this ?

any recomendation for small solid state relays,that are surface mount?

thanks
visit www.diveduino.com

MarkT

The general pattern is:

1) If the peripheral has an enable input then it may be possible to put it into an ultra-low power mode programmatically - if so do this, its easiest.

2) If not then a p-channel MOSFET or PNP transistor in a high-side switching configuration can be used to power down that device.  In this case you have to ensure all the signals to the device are put either LOW or as INPUTs before powering down.
[ I won't respond to messages, use the forum please ]

buton

visit www.diveduino.com

robtillaart


possible interesting read - http://www.gammon.com.au/forum/?id=11497 -
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

buton



possible interesting read - http://www.gammon.com.au/forum/?id=11497 -


wow...

awesome...
visit www.diveduino.com

robtillaart

Quote
wow...

awesome...

don't take to much, it is very concentrated knowledge ;)
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

ddancer722

#6
Nov 21, 2014, 06:52 pm Last Edit: Nov 21, 2014, 06:54 pm by ddancer722
http://www.amazon.com/Gino-5-5mm-Male-Plug-Battery/dp/B005D65LEG/ref=sr_1_1?ie=UTF8&qid=1369623511&sr=8-1&keywords=arduino+battery+adapter

Could i use one of these connected to a 12volt lead acid battery to run my arduino uno? so i dont bypass the internal regulator.

Mr_Laggy

@ddancer722- You are necroposting on an old and resolved topic.

ddancer722

thanks for pointing that out. can you also answer the question?

Paul__B

#9
Nov 22, 2014, 12:20 pm Last Edit: Nov 22, 2014, 12:21 pm by Paul__B
Could I use one of these connected to a 12volt lead acid battery to run my Arduino UNO? so I don't bypass the internal regulator.
That's just a bit of wire, no more, no less.

Why would you not want to bypass the internal regulator (which itself wastes more current than the MCU does in sleep mode)?  If you want to run from a 12V (14V) battery, you really should use a 5V switchmode regulator designed for automotive input voltages.

Hint: Posting links, remove the garbage after and including the question mark.

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