ryanroberts
Well-Known Member
Those little barometer chips have to be pretty accurate, mobile phones / fitness trackers use them for tracking stair climbing etc
Useful Piece of Kit
- Thread starter Danny_Labrador
- Start date
Little Dorrit
Well-Known Member
I tried to build your nanobaro but my soldering skills let me down so with my tail between my legs I revered to an app.
GHA
Well-Known Member
Should be not too hard to design a board on easyeda.com then get 5 made at jlcpcb.com, 5 is minimum order, about $2 for the board then an esp wifi chip & bpm280 - all surface mounted components ready soldered on. They have arduino chips, esp chips & bmp280 available as surface mounted components. Need to do something external to get the program burnt onto the chip but could be a nice little project for someone over the winter months.
I've just ordered 5 with external esp32 & much more than just a barometer chip
doug748
Well-Known Member
Excellent. Could you figure out what one of these models would cost? One seemed to be over 1000 euro two (looking a bit like valve radios) only 168 and the dodgy looking bracket 70. My German is not well developed.
Stemar
Well-Known Member
For those of baser tastes - or smaller budgets, my Alidl weather station has a barograph giving me the trend over the past 24 hours. Nowhere near as elegant, but you weep a lot less when it jumps of the wall
That isn't the one I've got, but it gives an idea. The barometer's surprising accurate, I set it when I change batteries and it's rarely more than a millibar out the next time.
That isn't the one I've got, but it gives an idea. The barometer's surprising accurate, I set it when I change batteries and it's rarely more than a millibar out the next time.
Little Dorrit
Well-Known Member
Bought one of these Barograph eBay for about £100, perhaps not ideal but should satisfy your craving and could be used on board suitably positioned and protected.
LittleSister
Well-Known Member
Is nobody using seaweed these days?
mjcoon
Well-Known Member
Little Dorrit
Well-Known Member
Has this turned into a thread on Sushi?
Kukri
Well-Known Member
Like John Morris I have a clockwork ‘Marine’ oil damped barograph. It’s of the type that were once supplied to weather reporting ships. And like John I made the mistake of buying a land type first...
john_morris_uk
Well-Known Member
That’s exactly the model we have on Serendipity. £100 is a very good price.
Boo2
Well-Known Member
How long do the batteries last ? Can you set it by inputting an altitude, or do you need to input the air pressure from a different source ?
Thanks,
Boo2
Little Dorrit
Well-Known Member
Well I'm a bit embarrassed to say that I didn't even realise it was a marine one until you pointed that out. It been used at home for a few years, but now I can give it a sea trial. It's good to know I finally managed to bag a deal on eBay!
Little Dorrit
Well-Known Member
Batteries last at least a year. The pressure is absolute pressure at mean sea level I think. You can adjust to give actual pressure for your height but that's pointless because as you no doubt know it's the 'Pressure Trend' which is important not the absolute pressure.
GHA
Well-Known Member
I've had on of these onboard since Sept 2001 >
Batteries last for so long I don't really notice when they get changed. There an altitude settable parameter though not sure what it actually does..
Really can't see the point of having some antique mechanical expensive machine onboard when much better options are available. Unless you like looking at it rather than using it
Stemar
Well-Known Member
What they said above. Batteries last a year or more. The current ones may be a couple of years old, but I really can't remember when I did them.You need to reset location (for sunrise & sunset times & location), time if you're as impatient as me, otherwise it'll sort itself out from an atomic clock in Germany, and the pressure, which defaults to 1013. Any of the weather apps on my phone give the current pressure, so really not a problem.
As for reliability, I'm on my second on the boat in 15 years.
As for reliability, I'm on my second on the boat in 15 years.
Kukri
Well-Known Member
Weather reporting ship barograph. Not a thing of beauty, quite big, but works well. The diaphragm is actually in an oil bath for primary damping, the feet are on rubber pads, and in a perfect world and a much bigger vessel it ought to be suspended on springs. But it works well on a sailing boat with
Victorian pocket aneroid by B.Cooke of Hull, well known nautical instrument makers:
The usual. In this case a present from my brother in 1984; the barometer is fine but the clock has been to see a watchmaker a few times, always because the striking train gets confused.
Victorian pocket aneroid by B.Cooke of Hull, well known nautical instrument makers:
The usual. In this case a present from my brother in 1984; the barometer is fine but the clock has been to see a watchmaker a few times, always because the striking train gets confused.
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Abestea
Well-Known Member
Agree that this works well. I have some extra sensors outside and in the forward cabin. Tells me to stay in the bunk much longer.!For those of baser tastes - or smaller budgets, my Alidl weather station has a barograph giving me the trend over the past 24 hours. Nowhere near as elegant, but you weep a lot less when it jumps of the wall
That isn't the one I've got, but it gives an idea. The barometer's surprising accurate, I set it when I change batteries and it's rarely more than a millibar out the next time.
Only issue is that the frog requires some batteries.
dolabriform
Well-Known Member
ryanroberts
Well-Known Member
You get a lot further than most. Usual life cycle of an Arduino is purchase->excitement->flashing light->draw->occasional guilt. I have a bunch of project that I haven't even started as have been working in embedded systems for the last few years and it's all a bit busman's holiday.
