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+--- Thread: Compass options (/showthread.php?tid=4522)
Compass options - yiannis - 2023-03-14
Hi all,
I am putting together my OpenPlotter and I realised that it would be good if I had the input from a compass, so I can calculate the leeway from COG and heading.
From your experience, is there any point in using with a cheap "digital compass" like a QMC5883L or a CMPS14? Can I plug and play in OpenPlotter? Or should I drop the whole idea and go for a proper fluxgate compass?
TIA,
Yiannis
RE: Compass options - Relax - 2023-03-18
(2023-03-14, 04:00 AM)yiannis Wrote: Hi all,
I am putting together my OpenPlotter and I realised that it would be good if I had the input from a compass, so I can calculate the leeway from COG and heading.
From your experience, is there any point in using with a cheap "digital compass" like a QMC5883L or a CMPS14? Can I plug and play in OpenPlotter? Or should I drop the whole idea and go for a proper fluxgate compass?
TIA,
Yiannis
Hi Yiannis,
I have Sparkfun ICM-20948 that gives the magnetic heading. I haven't tested the accuracy yet, because the boat is winterized.
BR, Sergej
RE: Compass options - Techstyle - 2023-03-20
(2023-03-18, 01:42 PM)Relax Wrote:(2023-03-14, 04:00 AM)yiannis Wrote: Hi all,
I am putting together my OpenPlotter and I realised that it would be good if I had the input from a compass, so I can calculate the leeway from COG and heading.
From your experience, is there any point in using with a cheap "digital compass" like a QMC5883L or a CMPS14? Can I plug and play in OpenPlotter? Or should I drop the whole idea and go for a proper fluxgate compass?
TIA,
Yiannis
Hi Yiannis,
I have Sparkfun ICM-20948 that gives the magnetic heading. I haven't tested the accuracy yet, because the boat is winterized.
BR, Sergej
I bought a BerryIMU (V2) and it gave me funny results, I swapped it for this one:
HiLetgo MPU9250 GY-9250 - https://amzn.to/3FEeHUa
and I got the same results, moved the position/orientation around and now both work fine. They are not plug and play - you need to calibrate and get the position on the boat right. Away from power cables, away from motors, speakers, etc - but those are considerations for Fluxgate compasses as well
I have pretty accurate heading and pitch and roll now