Data Logger Shield Specs

Post here about your Arduino projects, get help - for Adafruit customers!

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
GK22
 
Posts: 19
Joined: Tue Aug 26, 2014 9:07 pm

Data Logger Shield Specs

Post by GK22 »

Hi,

I purchased the adafruit data logger shield for arduino.

Can someone tell me what the current use is for the shield? I have searched the documentation but I don't see it. I am using this shield in conjunction with a the 20X4 LCD screen, this pushbutton switch, 2 humidity sensors, 2 thermocouple breakouts. All powered from the 5V source on an Arduino Mega 2560. I just want to make sure I am not overloading the 5V source. My count so far is:

LCD logic = 200mA
LCD backlight = 180 mA
Humidity Sensors = 2.5 mA x 2
Thermocouple amplifiers = 5mA (I think) x 2
Pushbutton (LED) = 25 mA
4 push buttons that go digital input pins

Thanks in advance.

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Data Logger Shield Specs

Post by adafruit_support_mike »

It depends on how often the module updates its position with the satellites.

It draws about 25mA during the acquisition process, and 20mA when tracking the satellites after making a fix. It only draws that current while running its radio though, so the overall current load is usually somewhere in the 5-25mA range.

User avatar
GK22
 
Posts: 19
Joined: Tue Aug 26, 2014 9:07 pm

Re: Data Logger Shield Specs

Post by GK22 »

Mike,

Thanks for the reply. The shield I'm using is just the data logger to SD with a RTC. It's not the one with the GPS. Do you have the specs for this one?

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Data Logger Shield Specs

Post by adafruit_support_mike »

Oh, my mistake.. sorry.

The RTC uses almost nothing.. a few microamps. It will run for months from a watch battery.

The SD card uses 150mA-200mA when you read and write to it, but nothing the rest of the time. The overall load depends on how much/often you want to use it.

Locked
Please be positive and constructive with your questions and comments.

Return to “Arduino”