5V To 3.3 V Schematic. You may find that 3.7v is enough to close the contacts on some higher voltage relays; The sd card is a 3.3 v device.
spi Convert 5V to 3.3V without logic level converter Electrical from electronics.stackexchange.com
Web for the 5v to 3.3v direction, a crude voltage divider will work. Web here is a simple voltage regulator circuit 5v to 3.3v designed by using tiny ic ams1117. Web guide to 3v3 and 5v power supplies differences.
Web 1 Why Not Pick A Lower Voltage Relay?
For the 3.3v to 5v direction however, i don't know of an easy solution. Ic ams1117 comes with lot of ranges hence choose exact ic. Level shifting is a dilemma so common we designed a.
The Sd Card Is A 3.3 V Device.
Web here is a simple voltage regulator circuit 5v to 3.3v designed by using tiny ic ams1117. Design and build robust electronic circuits and devices by learning the main characteristics and differences. Web guide to 3v3 and 5v power supplies differences.
I Did Some Searching And There Seem To Be.
Web 9 answers sorted by: There is a 3v version of the model you linked to. You may find that 3.7v is enough to close the contacts on some higher voltage relays;
Operating Range Of 1.65 V To 5.5 V;
Web to get over this obstacle you need a device that can shift 3.3v up to 5v or 5v down to 3.3v. Web for the 5v to 3.3v direction, a crude voltage divider will work. The 5 v module with sd card adapter steps down the voltage for powering the card and has logic level conversion for card's spi.
