UKHO Charts for OpenCPN on Raspberry Pi

[GHA]

We'll recheck the power issue. I have a USB current meter which may be useful.

Just tried a Pi3B+ on a CV/CC dc buck power supply, wouldn't boot with less than 750mA. Though the voltage might well fall off much quicker at the set current than a wall wart and a wall wart voltage might well start to tail off long before the rated output so might not mean that much really.

As this stuff is so much fun with a few minutes on google seems that it's possible to measure current and write to an influxdb database up to a few KHz so that might be interesting

This was measuring at 10Hz on the 12v side of a DC power supply (actually from a hifiberry amp which powers the Pi), without averaging the current draw was just a mess of lines it spiked that much>

 

[JumbleDuck]

Thanks, GHA. I have just been sent a screenshot of OpenCPN working on the Pi with a cryptic note that it was a bit complicated to get it going. I'm working away from home, so will doubtless hear all about it later.

 

[GHA]

Some faster current readings, peaking nearly 1A @ 5.1V

 

[JumbleDuck]

Some faster current readings, peaking nearly 1A @ 5.1V

I believe the one in question is running off a 3A supply, but will check.

 

[GHA]

I believe the one in question is running off a 3A supply, but will check.

It warns of power problems with a lightning bolt icon top right of the screen, it that's not popping up then prob OK.

 

[JumbleDuck]

It warns of power problems with a lightning bolt icon top right of the screen, it that's not popping up then prob OK.

Thanks!

 

[mattonthesea]

You could try changing the chart object scale factor in the user interface options to increase the sounding font size. Works with cm93 vector anyway.

Thanks. Worked a treat