how much power need an Arduino?
df0021 2012-11-18 11:29:40 5216 Views5 Replies Hello,
I intend to power an Arduino by a car battery.
The highest voltage in the cars net is may be 15 V (???), therefore do I need a pre-resistance.
In order to dimension that resitstance have I to know the current flowing thrue the Arduino.
There is an Arduino, a LCD-shield and (mostly in standby) a GSM module.
Has anybody an idea how approximately the power or current flow could be?
It is no high accurateness needed, because the voltage regulator has fortunately a wide input area.
Thanks in advance
df0021
PS: I'm not able to measure something, because I do not have the parts.
I intend to power an Arduino by a car battery.
The highest voltage in the cars net is may be 15 V (???), therefore do I need a pre-resistance.
In order to dimension that resitstance have I to know the current flowing thrue the Arduino.
There is an Arduino, a LCD-shield and (mostly in standby) a GSM module.
Has anybody an idea how approximately the power or current flow could be?
It is no high accurateness needed, because the voltage regulator has fortunately a wide input area.
Thanks in advance
df0021
PS: I'm not able to measure something, because I do not have the parts.
2012-11-27 17:30:34 > So you mean you have 15v power supply from your car, do you?
> If so I think you could use a DC/DC module or DC/DC shield to step down the voltage. Then supply the output >from the regulator to your controlling and display system.
15 V is may be a little to much. I did use three 10-k-resistance and connect the A0 behind the first resistance.
It works well.
regards
df0021
df0021
> If so I think you could use a DC/DC module or DC/DC shield to step down the voltage. Then supply the output >from the regulator to your controlling and display system.
15 V is may be a little to much. I did use three 10-k-resistance and connect the A0 behind the first resistance.
It works well.
regards
df0021
df0021 2012-11-22 23:43:29 So you mean you have 15v power supply from your car, do you?
If so I think you could use a DC/DC module or DC/DC shield to step down the voltage. Then supply the output from the regulator to your controlling and display system.
Regards,
Lauren Lauren
If so I think you could use a DC/DC module or DC/DC shield to step down the voltage. Then supply the output from the regulator to your controlling and display system.
Regards,
Lauren
Lauren 2012-11-19 13:35:43 I could measure something:
Powered by power jack (9,98V), not USB;
Arduino 25,4 mA
LCD-Display 24,7 mA
A huge amount of current, nothing for mobil use with small batteries.
df0021
df0021
Powered by power jack (9,98V), not USB;
Arduino 25,4 mA
LCD-Display 24,7 mA
A huge amount of current, nothing for mobil use with small batteries.
df0021
df0021 