Arduino Forum

Development => Other Hardware Development => Topic started by: tormentor on Jul 02, 2011, 04:56 pm

Title: 4-channel RS232 multiplexer
Post by: tormentor on Jul 02, 2011, 04:56 pm
  4-channel RS232 multiplexer with individual power selection and switches. Channel selection via XP2, power control via XP7 (high level to switch off), and JMP2..JMP5 (3.3V/5V):

(http://img535.imageshack.us/img535/8954/schps.th.png) (http://img535.imageshack.us/i/schps.png/)
(http://img268.imageshack.us/img268/9158/pcbkicad.th.png) (http://img268.imageshack.us/i/pcbkicad.png/)

Project files (KiCAD/Gerber): ul_comm_rs232_mux-01.tgz (https://docs.google.com/leaf?id=0B4EdBOyGBHKnNTA3ZjFkZDEtNjFiZS00N2MzLTkzOTEtYzU4NmE4NTIyYjg3&hl=en_US)
Title: Re: 4-channel RS232 multiplexer
Post by: CrossRoads on Jul 03, 2011, 04:44 am
You have a lot of serial things to talk to?
Title: Re: 4-channel RS232 multiplexer
Post by: tormentor on Jul 03, 2011, 10:15 am
Quote
You have a lot of serial things to talk to?
3 in recent project - GSM, GPS, and serial ADC/DAC tensometric module.
Title: Re: 4-channel RS232 multiplexer
Post by: retrolefty on Jul 03, 2011, 04:54 pm

Quote
You have a lot of serial things to talk to?
3 in recent project - GSM, GPS, and serial ADC/DAC tensometric module.


I think I would have gone with a mega board with it's built in four hardware serial ports, less hardware, less software, propably less costs overall?

Lefty