Hi everyone,
I am planning a project where a Teensy 3.0 should read data from a SPI Imu and write it onto a micro-sd card (I recently purchased the teensy card reader).
Now I realized that are two difficult issues in this project:
First, the whole project won't be powered most of the time via USB, but via an external 5V power source. If I make shure that eiter USB or this external supply power the Teensy, do I need to cut anything on the board, or can I use it as is? (I refer to the Teensy manual)
Second, the SD card and the IMU consume more than 100 mA. So, both devices have to be powered externally, is that correct? Can I connect the SD-card to external 3,3 V and connect both teensy and SD to a common ground?
Sorry, I am still a beginner in electronics... maybe somebody can give some hints on this?
Regards
TP
I am planning a project where a Teensy 3.0 should read data from a SPI Imu and write it onto a micro-sd card (I recently purchased the teensy card reader).
Now I realized that are two difficult issues in this project:
First, the whole project won't be powered most of the time via USB, but via an external 5V power source. If I make shure that eiter USB or this external supply power the Teensy, do I need to cut anything on the board, or can I use it as is? (I refer to the Teensy manual)
Second, the SD card and the IMU consume more than 100 mA. So, both devices have to be powered externally, is that correct? Can I connect the SD-card to external 3,3 V and connect both teensy and SD to a common ground?
Sorry, I am still a beginner in electronics... maybe somebody can give some hints on this?
Regards
TP