jkosharek Posted October 25, 2023 Posted October 25, 2023 Looking to Monitor 12v DC on my whole house backup generator. It's an older Generac that doesn't support the wi-fi module. I am using Brultech Gem energy monitors and NodeLink for the AC voltage side and some programs on the EISY to monitor exercise and running cycles. This lead me to discover an issue with the trickle charge and the exercise cycle not working due to a low battery. So I am looking for a way to monitor the battery voltage and maybe the engine starter circuit and bring that data in to the EISY.
kzboray Posted October 26, 2023 Posted October 26, 2023 You might check out the Noyito-Relay NS. It supports several relay modules that you could easily trigger from 12v. https://www.amazon.com/NOYITO-2-Channel-Module-Control-Intelligent/dp/B081RM7PMY There is also the BASAO NS which also supports relay control. https://github.com/sjpbailey/udi-poly-baspi-sys6u4r2ao-master-v3/blob/master/README.md 1 1
EWhite Posted October 26, 2023 Posted October 26, 2023 (edited) im using the MQTT beta node server and a WEMOS D1 Mini with tasmota on it to give me exact voltage readings. Works great after a few tweaks to the node server that got done. here is entire thread on it... Edited October 26, 2023 by EWhite 2 1
jkosharek Posted October 26, 2023 Author Posted October 26, 2023 2 hours ago, EWhite said: im using the MQTT beta node server and a WEMOS D1 Mini with tasmota on it to give me exact voltage readings. Works great after a few tweaks to the node server that got done. here is entire thread on it... Do you have a link to which board you have? I think that would be perfect, I would even monitor temp of the unit.
jkosharek Posted October 26, 2023 Author Posted October 26, 2023 2 hours ago, kzboray said: You might check out the Noyito-Relay NS. It supports several relay modules that you could easily trigger from 12v. https://www.amazon.com/NOYITO-2-Channel-Module-Control-Intelligent/dp/B081RM7PMY There is also the BASAO NS which also supports relay control. https://github.com/sjpbailey/udi-poly-baspi-sys6u4r2ao-master-v3/blob/master/README.md I ordered a BASPI-IO6U6R to play with, look promising. Have you used them?
EWhite Posted October 26, 2023 Posted October 26, 2023 https://www.amazon.com/HiLetgo-NodeMcu-Development-ESP8266-Compatiable/dp/B073CQVFLK/ref=sr_1_1_sspa?crid=2CFR7T6HQCY92&keywords=wemos+d1+mini&qid=1698341117&sprefix=wemos%2Caps%2C233&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1 for the wemos board and : https://www.amazon.com/AM2302-Shield-Digital-Temperature-Humidity/dp/B0982C8F8P/ref=sr_1_3?crid=1AYBRH1CB7ZU1&keywords=wemos+d1+dht22&qid=1698341285&sprefix=wemos+d1+dht22%2Caps%2C133&sr=8-3 for the temp sensor... google tells you how to set up the wemos to monitor voltage, have to use a couple resistors to step it down. my chickens love their "smart coop" hehehe 1
brians Posted October 26, 2023 Posted October 26, 2023 Similar hardware, not on IoX but in HA... but still interesting. 1
apostolakisl Posted October 27, 2023 Posted October 27, 2023 (edited) CAI Webcontrol 8 board has several analog inputs on it that measure 0-10vdc. You would need to fashion a voltage divider to bring the 12v battery in range. Might need to include a path to ground through a resistor as well to keep it accurate, I'm not really super savvy when it comes to that stuff. The CAI board has a node server made by IOGuy. It runs on a rpi or PC and can be downloaded from his website. There is a section here on the forum just for nodelink. For me this would be the easiest especially considering I already have nodelink running in my setup. Once you get that analog value showing up in a node on ISY you would write a program to convert the voltage divided value back to the undivided value. https://forum.universal-devices.com/forum/113-nodelink/ Edited October 27, 2023 by apostolakisl 1
jkosharek Posted October 27, 2023 Author Posted October 27, 2023 3 minutes ago, apostolakisl said: CAI Webcontrol 8 board has several analog inputs on it that measure 0-10vdc. You would need to fashion a voltage divider to bring the 12v battery in range. Might need to include a path to ground through a resistor as well to keep it accurate, I'm not really super savvy when it comes to that stuff. The CAI board has a node server made by IOGuy. It runs on a rpi or PC and can be downloaded from his website. There is a section here on the forum just for nodelink. For me this would be the easiest especially considering I already have nodelink running in my setup. Once you get that analog value showing up in a node on ISY you would write a program to convert the voltage divided value back to the undivided value. https://forum.universal-devices.com/forum/113-nodelink/ I ordered parts to play with for 2 solutions. I will look into this if they don't pan out. I run the NodeLink to get my Brultech Gem energy monitors, so it's a decent fit. Thanks!
apostolakisl Posted October 27, 2023 Posted October 27, 2023 2 minutes ago, jkosharek said: I ordered parts to play with for 2 solutions. I will look into this if they don't pan out. I run the NodeLink to get my Brultech Gem energy monitors, so it's a decent fit. Thanks! I don't know much about Brultech, just at a glance I didn't see any DC voltage meter on it. I use Emporia Energy for monitoring my home energy which has a PG3 node. Though Emporia doesn't report voltage, only energy consumption. But it works great for that and a PG3 node makes it very streamlined. 1
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