Show Posts
Pages: [1]
1  Using Arduino / General Electronics / Re: 1 battery for powering arduino, motors, and raspberry pi on: October 20, 2012, 05:25:38 am
Yes! This is the info I was looking for.
I will go shopping for a switched mode regulator and a lipo pack.
I am looking at this lipopack from a local shop.
http://www.lipogigant.nl/a-147200/turnigy-1600mah-2s-20c/
This one should be ok. Do you agree?

@TeslaIaint:
Why are you using a rasberry pi and an arduino? Must be an interesting robot. Can you share? Or is it top secret? haha
It is just a project of mine. With a raspberry pi(running Debian Linux) connected I open up a whole world of features.
I am thinking of voice control, maybe add a webcam. My desktop-computer unlocks it self by facial recognition. Maybe i can implement something like that on the robot.
I have been programming linux for years now, but the electronics and Arduino stuff is new to me. I am progressing slowly, but ill get there. :-)

I really do appreciate all your support.

Jombo





2  Using Arduino / General Electronics / Re: 1 battery for powering arduino, motors, and raspberry pi on: October 19, 2012, 10:54:53 am
Hi fungus,

I did read your previous post. From what I understand I can hook up 3 batteries to the servo and the motors. also have the 3 batteries connected to a USB dc converter. The dc converter will allways power 5 volts to the raspberry pi.
Also I need to put decoupling capacitors between the USB DC converter and the raspberry pi.

Do i have this correct?

Regards
Jombo.
3  Using Arduino / General Electronics / Re: 1 battery for powering arduino, motors, and raspberry pi on: October 19, 2012, 09:55:11 am
Thanks all.

 
I'd like one powersupply for the arduino, the raspberry pi and the servo and the motors.
The raspberry pi sends commands like to the arduino. The aruino will interperet these commands and turn the motors or turn the servo.

The raspberry pi needs exactly 5 volts. If i connect a powersupply of 5 volts, it should work.
But what if i then run the motors and the servo from the same powersupply?
Won't that give less power to the raspberry pi and making it crash?  It is not an option to add more batteries and volts, because the Raspberry pi can only handle 5 volts.


As I said, i am a total noob in this area. But I can not find any usefull info on the web.(i just don't know what to google for.)

Regards,
Jombo
4  Using Arduino / General Electronics / Re: 1 battery for powering arduino, motors, and raspberry pi on: October 19, 2012, 07:34:04 am
i TeslaIaint,
Thanks for answering.

The motor specs can be found here http://iprototype.nl/products/robotics/servo-motors/dc-geared-motor/ (under the head Motor Specificaties:)

                 3V              6V
No-load speed      100 RPM           200 RPM
No-load current            60 mA       71 mA
Stall current       260 mA       470 mA



The servo: http://iprototype.nl/products/robotics/servo-motors/servo
Voltage    4.8V ~ 6V


Let me know if you have more questions.

Regards,
Jombo
5  Using Arduino / General Electronics / 1 battery for powering arduino, motors, and raspberry pi on: October 19, 2012, 05:22:39 am
Dear all,

I am working on my own robot.
It has:
   2 DC motors which are connected to 5 AA bateries.
   a raspberry pi which is connected to a 5v miniusb phonecharcher
   an Arduino, which is connected to/powered by a USB port of the raspberry pi
   a servo which is connected to the same 5 AA bateries as the 2 DC motors.
   a microsonic distance sensor which gets its power from the aruino.

The idea is to have the whole setup running on 1 power source consisting of one or more rechargeable batteries.
 
Now I am a bit of a noob when it comes to electronics.
Can anyone suggest what battery I should use, and maybe give some tips on how to set it up?

At the moment de motors slow down if i use the servo.(because they are on the same 5 aa batteries.) How can I prevent that with the new powersource which will also power the raspberry pi and the arduino?

Even though English is not my 1st language,I hope I made my question clear.

Regards,
Jombo

Pages: [1]