Using this board for USB to Serial??
rwgast_logicdesign
Posts: 1,464
Ok I really wanted to design my whole board including ditching the prop plug and wiring up my own USB to Serial. Well Im new to this stuff and Im not ready to etch pcb or surface solder, and I can not find a decent dip solution to replace the r232 chip used on the USB prop. I did however find this breakout board, check out the data sheet too:
http://www.dlpdesign.com/usb/2232h.shtml
Yes its pricey at 33 bucks. Im thinking it may be worth it though. I can just put sockets on all my boards to plug this module in and reuse it like the usb prop. The only thing is this chip gives me access to all the pins on the controller chip unlike the usb prop and the acuall chip looks like it may have more features that the ftdi chip, from what i can tell i can set this bugger to output 3.3 volt power which totally negates have to make a power regulation circut, am I right? Will this little board work for the prop is seems to have all the same outputs as the usb prop plus the power modes..
http://www.dlpdesign.com/usb/2232h.shtml
Yes its pricey at 33 bucks. Im thinking it may be worth it though. I can just put sockets on all my boards to plug this module in and reuse it like the usb prop. The only thing is this chip gives me access to all the pins on the controller chip unlike the usb prop and the acuall chip looks like it may have more features that the ftdi chip, from what i can tell i can set this bugger to output 3.3 volt power which totally negates have to make a power regulation circut, am I right? Will this little board work for the prop is seems to have all the same outputs as the usb prop plus the power modes..
Comments
you can achieve this much cheeper when using a USB-to-serial adpater which start at $3.
Make sure this adapater has a FTDI-chip or the CP2102-chip inside.
This will convert from USB to RS232 +-12V. So the +-12V must be shifted to 0V/3.3V with a MAX3222.
if you want direct conversion from USB to TTL how about this one? https://www.adafruit.com/products/70
or this board? https://www.adafruit.com/products/284
Or if you are in europe
http://www.elv.de/output/controller.aspx?cid=74&detail=10&detail2=28776&flv=1&bereich=&marke=
best regards
Stefan
first off i can switch the power to 3.3v and that will allow me to power the prop directly without building a regulator circut correct? this would mainly be for testing and programming a chip alone. then if i need to power a full board of usb i would switch to 5 volts and put the power regulators on the board in front of the prop chip. and this thing is plug and play if i use a dev board i can just plug the board into 4 pin header.
when i have a final projet it will already be layed out using usb the 5 volt power from this thing and be ready for me to just soldier a usb recepticale on to the board which can be used to power the device?
in reality though will most boards with multiple propchips and ics need more than 5 volts? i mean i see most of the computers built on prop using 7 to 12 power supplys.
One reason you see so many boards that use 7V or more is because many 5V regulators need about 7V to work correctly.