Tony - Does anyone have a sketch on deep sleep ...
Does anyone have a sketch on deep sleep and wifi connection logic to reduce the time it takes to connect to wifi and establish a wss client connection? I want to build a power efficient device that can wake on a set interval (configurable on the sensesp configuration page). This means I need to quickly connect to wifi and establish a wss connection. I know there are some techniques to wake and connect to wifi that can take only milliseconds. Ideally the wake time is less than a second, including the round trip to Signalk.
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Is this kind of sensor that will be battery powered and will send some values into SignalK every x hours?
It will be wired to 12v but I am also going to work on a battery powered and solar version. The interval will depend on the sensor, but more than every few hours. Anywhere from every few seconds to once per minute.
I would recommend using just bare Arduino with ESP32 and using HTTP with predefined JWT token from SignalK or sending deltas via UDP, SensESP isn't really ready for this.
Why isn’t sensesp ready for it? If the device has already been granted access to connect via wss then what is the limitation?
The limitation is that I'll have to manage WS connection to server and waste a lot of effort to make it working reliably. The SensESP isn't designed with low power or deep sleep in mind. Also I tried to work with it for my T-Watch 2020 project, here is https://github.com/JohnySeven/SensESPWatch and I've end up just writing it from scratch, because I had trouble with timing my "high power" mode vs "low power mode".
Your watch project is five years old. At the time sensesp was not even v1. Have you done any development on the platform since then? I am curious how it’s not designed with deep sleep in mind. What is the limitation?
Yeah, I've contributed to v2 webUI and made few projects based on v2, v3 breaks a lot of things so I didn't try it for that matter, but I don't think there was some kind "lifetime" mechanism that could support for deepsleep and correct closing of websocket and it would take more time that writing simple sensor that would push data into Signal K via HTTP or UDP. So you'll see and let me know how it goes 🙂
Would love to see WOL (wake on lan), triggered from node-red.
Some SensESP modules only needed when cruising or on demand.
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Sure I can build something with it and see how it goes. Is there anything specific you would like me to evaluate?
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