olimex / bb-ads1262 Goto Github PK

Hi, it is not clear to me in the schematic and in the Arduino example, if I can directly connect the logic of ADS1262 to 5V of my Arduino.
Do, I should open SJ1?

In the example there is written to connect simply the 5V on DVDD (so the pin marked on the board 3.3V), while the Analog Vdd is kept free. It is not clear to me this, since if I feed the MT3608 and AP2127k-adj, you will obtain a AVdd > 5V and the ADS1262 will burn!

Can you explain better how to manage different voltage supply?

I have the Olimex Bb-1262 rev A1.
The board by default is set to use 3.3 volt logic and by default generates +5 VA.

To use this board with a +5 volt board such as Arduino UNIO or MEGA my best guess is .
Open SJI
Connect Arduino +5 out to BB-ADS1262 pins +5VA on connector 1 pin 14 and 3.3VD on connector 2 pin 1.
Arduino GND connect to GNDA on connector 1 pin 13 and GNDD on connector 2 pin 2.
This should make the digital signals comparable with +5 volt controllers without using a logic converter or voltage divider.
This is basically how ProtoCentral does it. However I can't get theirs to work.
Another thing it seems the Olimex BB-ADS1262 Example sketch does not use standard SPI pins.
Does anyone know why ?
Where can I change the pins assigned to the SPI signals?
To avoid voiding warranty I may use a logic converters for the signal and use 3.3 volt logic .