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CREATE A MULTIFONCTION DISPLAY
#1
bonjour je veux faire un dysplay multifonction avec waveshare e-ink dysplay et framboise pi zéro avec un boîtier étanche imprimé en 3D
sur ce dysplay je veux voir cog sog waipoint vent et ais cible comme kindle digitalyacht app c'est possible mais je ne comprends pas
comment openplotter comunicate avec le dysplay wifi, je ne veux pas avoir chartplotter sur cet écran pourriez-vous m'expliquer la route de programma cette
si c est bon je prends le boîtier pour tout le monde j ai une imprimante 3 d et c est facile pour moi de faire le boîtier mais pas facile de programmer le pi zéro
Je travaille à cela si vous voulez m'aider je pense que diy est better than buy multinational thing thinks to openplotter group for this very good work sailing free sailing good
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#2
Ich verstehe nur Bahnhof Huh
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#3
sorry for my bad english i just whant make very low consomption repeater dayli readable i look another solution but they are with kindle or tabs not dayly readeable
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#4
I was thinking about a LED matrix (+Raspberry Zero W) completely sealed against water + blocking incoming sunlight (from above) with a black hood as done with LED traffic lights, eg. https://www.signal-tech.com/product/file/7383.png. More importantly, this repeater would be more then perfect during night sails. With a battery pack (standard smartphone accessory), this would be a portable repeater which can move below/above deck.

My first experiments with OpenPlotter/Node-red/MQTT and a wifi switch were positive, I have a remote wifi switch (needs +5V only, connects to OpenPlotter AP) which cycles through 4 views (engine temp/mag. course/COG/SOG) on each remote button push. The display quickly scrolls the data repeatedly, I assigned a dedicated color to each value so I only need to scroll a digit, no label since I recognize the data by color. It works more then fine below deck and is readable from several meters away providing the bright LED (+ Raspberry Zero W) is not mounted in direct sunlight. Not tested yet in the cockpit but should be OK under the sprayhood (+ black hood blocking more sunlight).

I have a video showing only temperature with the LED display still mounted on my OpenPlotter Raspberry, that is my old setup, just to give you an idea: see video on this link http://www.adambahri.com/images/iot-aboard.mp4
With my new setup, Raspberry Zero W + Sense Hat (LED matrix), I've seen that there are more bright colors (white/aquamarine/magenta/blue) to play with compared to the red color used in the video.

The remote wifi switch (not seen in the video) actually is a low power TP-link MR-3020 portable router which sends MQTT message '1' to Node Red for each button push, there is also a separate slider on this device. For now I use the slider to select a dataset (out of 3), and the push button to cycle through the data stream per dataset. Configuration was quite difficult, I had to replace the firmware with OpenWRT and install mosquitto on the device, it still can function its original purpose as a 3G-to-wifi router when docked in the marina (getting this last one working was the greatest challenge for me).
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#5
hello i think i have a good solution witn this https://www.waveshare.com/4.2inch-e-paper.htm and this https://www.waveshare.com/e-Paper-ESP826...-Board.htm very low comsonption now the question it s if is possible to connect this to opencpn data or signal k data the must it s have a waypoint direction sog cog gps and wind have an idea easy or difficult thinks for your response
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#6
These Waveshare e-ink displays have been discussed on this forum earlier:

http://forum.openmarine.net/showthread.p...=waveshare
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#7
It takes four seconds to update the display. I wouldn't want to use it for SOG or COG because of it's bad response rate.
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#8
ok thinks
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