hi ericgibbs, thank you very much!
I have changed the circuit diagram. can you help me check it?
and i have one question:
1,yes, portA is the analog input, i should let the output of AD620 connect to PA0. but i also need PA0 working for LED display, can i let them all connected to PA0(you can see it in the new diagram)? or there have another solution?
In fact, i also need ATmega16 connect the nRF905, so i can not use the following pin for the LED display:
TX_EN
D4
PWR
D6
CD
B2
DR
B3
MOSI
B5
MISO
B6
CSN
B4
TRX_CE
D3
upCLK
D5
AM
B1
SCK
B7