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Windvane weather sensors with display virtual serial port connectivity
(2020-02-01, 06:51 PM)Twdee Wrote:
(2020-01-28, 10:31 PM)ddelorme Wrote: You need code to connect the 2. the davis pinout is on Sean's site i think.
there are 4 pins. 1 analogue wind direction 1 digital the wind speed  a ground pin and a power pin.  I sent 5 volts to power mine but i think Sean's is 12V.  i built a Esp32 version that sends data via wifi and controls the masthead light. It uses NMEA for the wind sensor  and sk for the anchor light. So i just need to send 12V up the mast. I did not include the BME XXX as i did not see much sense in putting the sensor in a sealed box. if your curious I would read though Sean's site. The davis does have a dead spot so I aligned mine  so the dead spot is to the front of the boat. this way dead spot does not really interfere with the boats navigation. I previously had used a cheap Chinese wind sensor but it broke in one season and was much heaver.  SK converts the NMEA to display in SK. Writing code for a boat is a bit more work then most iot applications as on the boat we are reading the device @10 hz where iot  stuff is in the 1 to 5 second range.

I started porting to NodeMCU(esp8266), which should be compatible with esp32 but immediately ran into library differences.
Think i resolved those; curious what libs were used - source/version?

Then ran into some compliler error(s).  Is the code on github Up-To-Date.

Ideally, i would like to convert to a Solid-State w/WIFI acquisition  method for getting wx/wind-info into OpenCPN/OpenPlotter/Pypilot.

Additionally, to retrofit a speed-through-water(paddle-wheel) sensor; acquiring via voltage or pulse.

Any feedback would be appreciated!

my code or Seans'  I used a esp32 feather due to the size and I had one. the ADC is 12bit and accepts a larger range of voltage. I would like to rewrite some  of the code. So the default web page could also display the values as well as set up the wifi connection to the Sk server. I had to add code to deal with the voltage ref fuse was not calibrated on my feather this should not be necessary on newer chips esp32 chips.
The paddle repair is a work in progress I had to get smaller less powerful magnets. I could spin it by hand but when i tried the water via tap the magnet would hold the paddle in position like the death stars tractor beam.
I am just getting my printer tuned in to print with PETG. May be the next print will work.

I just my weather sensor. I read through the post - still have a few questions if i understand the wiring correctly:
in github, the wiring:
rj12 - arduino - rj12 - connections
wire color - pin - pin
red - gnd - pin 3 - potentiometer power A - reed switch A
yellow - 5v - pin 5 - potentiometer power B
green - a7 - pin 4 - potentiometer reading
black - d2 - pin 2 - reed switch B

does it mean that the a7 and d2 are the two connections to the wind vane?
My other question: how does it communicate with the Rpi/ through wifi, or I need to connect it somehow?

Best regards,
to be clear: yes.

You can solder to d2, a7, gnd, and 5v the 4 wires of the wind sensor.
(2020-10-08, 11:57 PM)seandepagnier Wrote: to be clear: yes.

You can solder to d2, a7, gnd, and 5v the 4 wires of the wind sensor.

Hi Sean,

the weather sensor has only two cables, not four. So now wait to do? It is a rotavecta z195.

Best regards,
Yes, sorry as mentioned in email this sensor is not supported by my weather sensors which require 4 wire.

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