Hi Folks,
did anyone tried I2C board chain ? Is it working ?
Cheers,
did anyone tried I2C board chain ? Is it working ?
Cheers,
Im interested in giving this a shot. I hope no one saw my original comment it was seriously retarded. I can breadboard it out. The design below the ISP on the schematic is reference for the chain right?
Yes, that is for chaining boards, the pads are located here: https://www.dropbox.com/s/f486v7mr564iy7d/board-layer01-top-name.png
i have build different boards and leave a connector for that but i am still waiting boards to arrive so i dont have 2 to try, i have one for debugging only: https://www.dropbox.com/s/9ojltfykb4v6sdb/IMG_20140205_192247.jpg
it is strange that this is working at all with pic connected like that bit i did not have qfn pic at the time.
this is the board with very poor dc dc design
: https://www.dropbox.com/s/uisskylqk1uu1z1/IMG_20140117_134651.jpg
and the new Board: https://www.dropbox.com/s/pzs0ex8tyo5gyqh/HashMaster%201.8.png
So, i will try everything when i get boards, i will post results here.
If you try i2c chain please post some news, you need to connect SDA , SCL and GND for that to work, in parallel. Do not connect 3.3v pin.
So:
TP6 - 3.3V - DO NOT CONNECT
TP7 - SCL - CONNECT TO TP7 ON NEXT BOARD
TP8 - SDA - CONNECT TO TP8 ON NEXT BOARD
TP9 - GND - THIS IS GROUND, if you running boards on same power supply they are already connected so you can connect just signal lines ( SCL and SDA )
Good Luck