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Livestock scale communication

mhkid last edited by mhkid

Anyone ever connect to a scale like this? I can't find a reference online with pinouts or communication protocol and commands. Haven't been able to get vendor to respond either. Any thoughts on how to reverse engineer the output from the unit shown here? Scale control

EDIT: I should add that it has an RS-232 9 pin connection on the back of the unit so it should be able to be communicated with serially.
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Update RF24 library to latest version
Bug Reports • • andriej

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@andriej Hi, I had problem using the main branch mysensors/Raspberry, that because of the bit-field struct (header_s) in Sensor.h They will get packed in different order on the arduino compared to the RPi (at least with my compiler, gcc). In order to fix this I created the 1.4dev branch. It uses full bytes instead of the bit-fields, but you need (of cause) to compile both the sensors (arduino) and the gateway (RPi) using the 1.4dev branch. We need to fix this in the main branch later on (and use the same files as in mysensors/Arduino/libraries/MySensors)
Gateway on Raspberry pi 1
General Discussion • • mimaret

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@mimaret It was a pleasure. Thank you for your feedback!
No merge into master in the last 5 years, should we use development?
General Discussion • • kiesel

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For me almost all I need is in Master. For some nice to haves I have some custom libraries, like a message and a presentation queue. The only wish I have is dual led support.
Running out of nodeId's
General Discussion • mysensors • • NielBierman

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@TheoL Not only did I put in delays, too, but I put in delays that were based upon the ID (which was stored in NVRAM)! This helped. caveat: This is probably not accurate be helps to explain the challenges with a large network. My initial experience with Arduino/nRF24 was using the libraries from TMRh20. Those libraries allowed a node to be a repeater, but only for 6 nodes. The primary node 0, master, only allowed 6 nodes to connect to it. The nodes connected to it also allowed 6 nodes. Subsequent nodes had to go through one of these repeating nodes. But the depth was only 4 deep. The master assigned node IDs if the node didn't already have one; similar to a MAC address. The master also kept track of the addresses (ARP table?). Addresses were 4 octets (base in the form of D/C/B/A. A node connected directly to the master had an address of 0/0/0/a (where 0/0/0/0 was reserved for the master). A node connected through another node had an address of 0/0/b/a, and so forth. But what happens is that a parent node has to mange the data from all its child nodes and their child nodes and their child nodes. Thus a node would get so bogged down dealing with this traffic that it din't do its sensor task very well. It is my belief that MySensors either uses TMRh20's libraries or has developed some aspects based on his initial work. I see that that TMRh20 has a version 2 and I have not experimented with it. I did find that MySensors worked better than version 1. Thus, my curiosity. I am also duly impressed at the magnitude of hardware. Currently a nano like device from Aliexperss is US$2-3, nRF24 ~ US$1, power supply ~ US$1.50, power cord ?, case?, sensors!? While the hardware cost is daunting, even with a PCB it's a lot of work building those up. So, yeah, I'm impressed! -OSD
How to great variables
General Discussion • arduino mycontroller.org variables • • wint0178

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Nice work so far @wint0178, great that you try expanding on the examples. Sorry for the late reply. If you look at https://github.com/mysensors/MySensorsArduinoExamples/blob/bba998bce09bc5139eb4ca7a05b0279f4083ff88/examples/PressureSensor/PressureSensor.ino#L90 you see where the existing child ids are defines. You just add another one for the gas sensor, with a unique number (incrementing by 1 is an easy way). Try that and report back on your result. If something is unclear, just post a followup.
GatawayESP8266 - Compile error
General Discussion • gatawayesp8266 compile error • • skom

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@eiten Ran into the same error but of course the community is always at hand, ready to help! Great! I'm using MySensors 2.3.2 release version. Downgrading the ESP8266 board library to 2.7.4 as suggested by @OldSurferDude did the trick. I'm still clinging to MySensors. So simple and inexpensive to use! All sensors and other stuff connects over three MQTT GW in three locations back to my Home Assistant. PS: Get well soon! Regards, Gunnar

Livestock scale communication

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Livestock scale communication

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Update RF24 library to latest version Bug Reports • • andriej

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GatawayESP8266 - Compile error General Discussion • gatawayesp8266 compile error • • skom

13Online

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Update RF24 library to latest version
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General Discussion • • mimaret

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General Discussion • • kiesel

Running out of nodeId's
General Discussion • mysensors • • NielBierman

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General Discussion • arduino mycontroller.org variables • • wint0178

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General Discussion • gatawayesp8266 compile error • • skom

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Online

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