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Beefed up pro mini with Mega2560

gohan Mod last edited by

I was wondering if this could be an option for nodes that are running low on power/memory. Does anybody know if it is too power hungry compared to a regular pro mini?
https://www.aliexpress.com/item/Mega-2560-PROMINI-3-3V-ATmega2560-16AU-with-male-pinheaders-Compatible-for-Arduino-Mega-2560/32802346483.html
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I have built 2 nodes with E01-ML01S (the cheapest module) and I have pretty good experience with them so far. I didn't have to use any capacitors to improve range, they are directly connected to some medium-quality Arduino Nano GND/3.3V. One of them is a lighting controller node, ~3 meters from the PA/LNA gateway (+ a 30cm wall) on the same level as the gateway. The other one is a repeter node and is ~10 meters from the gateway (+ a 20cm wall, same level as the gateway). In this case, radio orientation was important to get a good signal. One of the test modules could communicate with the gateway through 2 walls and a the ceiling (steel-bar reinforced). All-in-all, I am satisfied with the signal stability of these modules. It is a bit finicky to solder the wires to the module because the pads are very small. I always put some solder on the pads first and reheat when I attach the wires.
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@Redguy Did you succeed talking modbus and sending to mysensors network ? I have a small mysensors over rs485 network and would like to add this device : https://fr.aliexpress.com/item/4000478781091.html?spm=a2g0o.cart.0.0.1d513c00qfPO3K&mp=1 it would be convinient to use the same cables, ideally the gateway could make the translation directly.
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@electrik said in Wake-up by interrupt doesn't work: If the delay is not of importance to you, you can also have the sensor request its state from the controller each time it wakes up. No special modifications are needed than. It's true. But the controller must switch its relay state without having ack received from the node. That's not what MySensors plugin for Vera does. But you gave me an idea to implement an additional relay buildin into the gateway which will work as a proxy for my real actuator. Thank you!
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@Nca78 Thank you so much for your time, i didn't use the stepper motor yet and so i didn't pay attention to what came with it, thank you very much.
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Hello friend, any progress on this ? I plan to buy a power meter and it would be awesome to read it over my existing rs485 mysensors network ? can mySensors and modBus protocol coexist on the same physical line ?
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@gregvp Hi gregvp, thanks. The wire moves both axially and radially. It is being reeled and unreeled continuously. About 100 inches per second axially, much slower radially. It moves about 30 feet, close to its full length. It is a stranded wire, about 1mm thick. It's in a very accessible place. No such big environmental considerations. It doesn't connect anything, everything can be altered except the wire itself. It is not possible to inject a signal because I can't cut into its protective coating, just to avoid the coating stripping off during such a long test. It doesn't carry any signal, it's just part of the physical device. It has an aluminum testing apparatus that we can alter in any way. We just need to know when the wire breaks, if it ever does. Thanks for your interest in this problem. I'm hoping this helps give people any ideas that might be feasible. I think we might try a laser but I'm concerned the receiving window will be too small. We'll see though

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