[SOLVED] 3.5 TFT not stable at power up !

This is my dev board for testing displays and some modules and maybe couple sensors.

My questions:

  1. Do I need to add any capacitors ? or every module is packed with necessary stuff ?
  2. I want to wire the touch and SD modules of the 3.5 tft module, are they following the 3.3V as the other pins or they are 5V tolerant ?