Stalker V3 powering on and off the SD card

Products & Technology Arduino & Seeeduino
#1

Hello,

I have been trying to power off the SD card on Stalker v3 using the command “digitalWrite(4,HIGH);” (after soldering P2 as specified in the Stalker v3 wiki). However I am not sure that it is powering off. What would be the command if I want to power on again the SD card after powering it off, would it be “digitalWrite(4,LOW);” ?
My goal is to use as less power as possible since I will be running on solar power combined with battery.
Is there a way to check if the SD card is powered on or off?
Thanks!

#2

Hi guys

Yes, it would cut off the power of SD Card while using digitalWrite(4,HIGH), and get power from battery after setting a low level to pin 4.

Read the logic level from pin4 and you can get the state of SD Card. //digitalRead(4)

Jacket