Wiring Nasa Clipper mast head to USB serial - Printable Version +- OpenMarine (https://forum.openmarine.net) +-- Forum: OpenPlotter (https://forum.openmarine.net/forumdisplay.php?fid=1) +--- Forum: How do I...? (https://forum.openmarine.net/forumdisplay.php?fid=3) +--- Thread: Wiring Nasa Clipper mast head to USB serial (/showthread.php?tid=3834) |
Wiring Nasa Clipper mast head to USB serial - ash_perry - 2022-01-03 Hi all, I have a NASA clipper wind transducer and I'm trying to connect this to signalk via a RS422/RS485 USB serial adapter. Being new to all of this, I don't know where to map wires from the transducer to the serial adapter. Based on the attached diagrams (first is from the transducer manual, the second from https://open-boat-projects.org/en/category/projects/) I would assume: Transducer -> serial adapater Black -> GND Blue -> +RXD This may be obvious but the USB serial adapeter has the following terminals: T/R+ T/R- RXD+ RXD- GND When I connect it all up, the RXD light flashes a few times and stops so I'm assuming this isn't wired up correctly. RE: Wiring Nasa Clipper mast head to USB serial - Techstyle - 2022-01-03 (2022-01-03, 07:04 AM)ash_perry Wrote: Hi all, You didn't attach the diagrams does the Transducer say the blue line is +RXD - it should be the transmitter? in any case I would connect the Blue to the RXD+ and the black to the RXD-. if that doesn't work I would reverse them (Blue to RXD- and black to RXD+) RE: Wiring Nasa Clipper mast head to USB serial - ash_perry - 2022-01-04 FWIW after reading that NMEA 0183 signal voltage should be 3v I checked my output and it's fluctuating between 9.0 and 9.1v. I also misread the labels on the PCB and wired it wrong initially, not sure if this could have damaged the instrument? (2022-01-03, 11:56 PM)Techstyle Wrote:(2022-01-03, 07:04 AM)ash_perry Wrote: Hi all, Thanks, I'll give that a try! I've also updated the post with the attachments. (2022-01-04, 01:45 AM)ash_perry Wrote: FWIW after reading that NMEA 0183 signal voltage should be 3v I checked my output and it's fluctuating between 9.0 and 9.1v. I also misread the labels on the PCB and wired it wrong initially, not sure if this could have damaged the instrument? Unfortunately that didn't resolve the issue. With blue connected to RXD+ and black to RXD- and then reversed, there was nothing received in signalk nor did the RX LED flash on the serial converter. Update: I swapped the USB serial converter to another one I had and it works now - I guess it was just a faulty adapter. If anyone else finds this thread trying to wire up the Clipper NASA wind transducer, blue wire goes to RXD+ and black wire goes to GND on the serial adapter. RE: Wiring Nasa Clipper mast head to USB serial - KDyS - 2023-09-24 do you have a link to the USB serial converter you are using ?? |