SIM Reader powered by the serial port

by **alandsilva** » Thu Sep 17, 2009 5:05 am

Is it possible to provide the vcc power supply from the vcc pin from the serial port?? Thanks in advance

by **mtbf0** » Thu Sep 17, 2009 6:31 am

alandsilva wrote:Is it possible to provide the vcc power supply from the vcc pin from the serial port??

there isn't one. signal levels on a serial port are like +/- 10v.

by **djfreeman** » Fri Oct 02, 2009 1:15 pm

yes you can....

But the current is low, you have use the pin 4 and 5 to the db-9 ang link to 1n4148...or...take tehe vcc from the USB

by **minerva** » Sun Feb 14, 2010 10:47 am

This is basically why we invented USB... and that damn RS232 should be banished.

by **pstemari** » Fri Aug 06, 2010 1:56 pm

minerva wrote:This is basically why we invented USB... and that damn RS232 should be banished.

Get back to us on that after you've implemented a USB packet driver.

There's a reason those FTDI cables and chips are worth their weight in gold.