PDA

View Full Version : Max232 less RS232 Interfacing circuit PCB



tpsbpl
08-21-2009, 09:21 PM
Max232 less transistorize RS232 Interfacing circuit PCB
http://onlinetps.com/resources/transistor_RS232-pcb.JPG

surbhit
08-22-2009, 04:13 PM
Good one :)

akshay66
08-24-2009, 06:29 PM
have you tested this circuit?I took something of this kind from another site, made it 2-3 times but it never worked.

vikas
08-24-2009, 06:37 PM
These circuits will not work with USB to serial etc.

Initially i too had thought on saving money on ARP using such a things .... But its very unreliable.

Not recommended ... Arduino Single Sided Serial uses such a circuit.

akshay66
08-24-2009, 08:20 PM
i am talking about serial to serial.No point debating on this topic because we all have MAX232. :D :D

surbhit
08-25-2009, 01:18 AM
http://freecircuitdiagram.com/2009/03/27/simple-ttl-rs232-level-converter-using-transistor/

http://www.electro-tech-online.com/micro-controllers/33941-troubleshooting-two-transistor-rs232-level-shifter.html


:P :P :P

akshay66
08-26-2009, 10:19 PM
This programmer uses the same circuit:
http://robonics.co.in/components/com_virtuemart/shop_image/product/pic_icsp_prog.jpg