Recent content by shadowsteve

On your phone? May as well have a flip phone in that case. If you're referring to the solar equipment then the dog would be barking long before someone got close enough to connect with BT :)

I built 2x 280Ah @ 12v packs for my RV in 2021. We only use it heavily for 5 months in the winter (two so far) but it's been running fine since built. It sits beside the house and I can monitor the system from my local network. Currently it shows 50 cycles on the batteries. When I built the...

I had card corruption issues after a while on a Pi4. I switched to using a SSD on my data collection system (Pi4 and ESP32's)

I read that one. All of the data reduction I've seen so far requires creating another set of data with less points which changes the Grafana charting when you want to zoom in/out. Just wondered what others have setup for their db's. I can't be the only one that has run into this issue as it's a...

Who's using Influxdb on their system? My db is >2gb and now won't compact. I have no CQ or RP setup.

Has anybody using Influxdb run into the compaction issue yet with a large db? My db is >2gb now and on Raspbian32bit & Influx 1.8 I'm looping on compaction that fails with memory issues. Seems to be due to Influx trying to map the db into memory and it exceeds addressable space. I have no CQ...

Just found this thread. I'm running a Pi4/SSD with Telegraf/Influx/Grafafana to monitor my system in a fifth wheel trailer. I collect data from two JBD BMS units w/ESP32's, a Rover 40A via USB, an 8266 w/GPS & accelerometer and an 8266 w/DHT22. I display in a browser, on my phone or on a Pi3...

I have 560Ah (8x 280's) and with 150A BMS' my cost shipped to Canada was 1125$US which is <17c/wH for the components. I used what I had for the wiring & boxes but even so that might have added 50$ if I had to buy it. I'm retired so my time is free :)

I'm just using a small buck converter mounted under the ESP32. It's the solder points between the socket strips. The 4pin cable plugs into the JBD BMS serial port

I have a 4S BMS. Don't know if there is a difference but I don't have the ground wire from the sense connector tied to the cells. This was based on a diagram I found when I was setting them up last summer

I wrote my own for the ESP32. Post #57 on this thread https://diysolarforum.com/threads/jbd-overkill-bms-monitoring.21817/page-3#post-516307

Just found this thread. The Overkill is the same as the JBD BMS. I'm running ESP32's on each JBD sending data via MQTT to an Influx DB on a Pi4/SSD with Grafana charting. There a couple of threads for the JBD stuff

No, you're right about the caps. It depends on the power supply design as to how it handles current draws far beyond it's rating. Easy to test, just short the lines from the power supply and see what happens

The supply would have to have some form of active current limiting. If it's a fuse then it'll just blow the fuse. The caps are a short circuit for the moment it takes for them to start to charge. A resistor and a pushbutton is the simple method. Making it foolproof requires removing the fools...

He never came back to say what he came up with. :)