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Project:Nanode/PoorMansCable2: Difference between revisions
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(Created page with "== Poor mans Arduino/ftdi cable == = Requirements = 1) Random no-name USB to Serial cable. In our case a Sitecom CN (http://www.sitecom.com/usb-to-serial-cable/p/31). Ideailly ...") |
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On the board are two chips; one is the main USB chip and one is some MAX233/SP231 or similar variant which brings the 5v of the USB logic to the required RS232 voltages. We're now after the 5 FTDI wires: | On the board are two chips; one is the main USB chip and one is some MAX233/SP231 or similar variant which brings the 5v of the USB logic to the required RS232 voltages. We're now after the 5 FTDI wires: | ||
|| serial || FTDI colour || DB9 pin || | |||
| RTS | green | DB9 - 7 | | | RTS | green | DB9 - 7 | | ||
| RxD | yellow | DB9 - 2 | | | RxD | yellow | DB9 - 2 | | ||
| Line 32: | Line 33: | ||
| GND | black | DB9 - 5 | | | GND | black | DB9 - 5 | | ||
( | (http://www.sparkfun.com/datasheets/DevTools/FTDI%203.3V%20IO%205V%20Vcc%20Cable.pdf) | ||
Use a multimeter to find the pin on the SP213EH to which the corresponding DB9 pin is wired. Note this on the diagram of the SP231EH chip: | Use a multimeter to find the pin on the SP213EH to which the corresponding DB9 pin is wired. Note this on the diagram of the SP231EH chip: | ||
