Mod

Thank you !

The main thing mqtt has (that MySensors doesn’t) is ”packet identifier” in mqtt lingo. It is similar to tcp’s sequence number.

Mqtt also assumes that

• the broker (I guess the analogue is the MySensors gateway) has persistent storage, or at least sufficient ram to buffer all messages until they have been marked as delivered
• everything is single hop (no repeaters)
• there is a DUP flag
• clients have sufficient ram to buffer all outgoing messages until they have been marked as delivered, and has timers to retransmit messages

I am not sure how mqtt handles ordering of messages. I think mqtt doesn’t guarantee ordering, regardless of qos level.

@alowhum said in MySensors gateway and network reliability:

Very interesting! If I don't call wait() manually, when does the library process messages? Also at the end of the loop?

Correct

@alowhum said in Build retry funtionality into the mysensors library:

So in a basic home situation a buffer for two messages would be fine, and three would be a luxury.

Each nrf24 has this luxury of a 3 message hardware buffer

@alowhum MySensors resets the watchdog every time loop() is exited, so there is no need to call wdt_reset() unless you do something that takes a long time. If you do stuff that takes a long time you should call wait() instead, so messages can be processed.

@alowhum most of these questions are way too advanced for me to answer, but I know that wait() calls _process() which processes messages and kicks the watchdog (through doYield()). See https://github.com/mysensors/MySensors/blob/development/core/MySensorsCore.cpp#L565

while (hwMillis() - enteringMS < waitingMS) {
_process();
}

By default, nrf24-based nodes do not use interrupts for message handling.

There is nothing done in parallell.

@keldandorin You'll need to install the development version of MySensors, or downgrade the esp board definitions. See https://forum.mysensors.org/post/92176 for more details.

@neverdie said in BEEP base v3:

I'm a bit confused as to why it has the shape that it does.. What is it that you are hoping it will do?

Google is your friend
https://www.kickstarter.com/projects/beepnl/beep-base-a-measurement-system-to-assist-beekeepers

@hj_sk - yes, I always set ID in each node.

@encrypt said in Solar Energy Harvesting for wireless motes:

There is a "Where to buy" button at the top of the page I linked.

As you can see on, the page, they can be bought worldwide on the Fujitsu webshop for €4 per unit: https://shop.feeu.com/epages/es966226.sf/en_GB/?ObjectPath=/Shops/es966226/Products/AEM10941

Yes thank you, I have seen that but I hoped there would be another source for the bare chip. I have to enter all my personal information to create an account and have an idea of the shipping price, which is annoying. Can you or anyone else with already an account check how much the shipping is for a few units for "non EU" destination ? Thank you !