Recent content by shadowsteve

  1. shadowsteve

    Off-grid Solar / Battery monitoring and control freeware

    There's no working connection to the Renogy. None of the debug statements indicate any comms success as far as I see it.
  2. shadowsteve

    Off-grid Solar / Battery monitoring and control freeware

    I'm on the road until April and the cable is at home. It was similar to what BarkingSpider did though. Make sure you get a USB cable that has a genuine chip in it for the data conversion as some of the knockoffs don't work
  3. shadowsteve

    Future of DIY LiFePO4 looks bleak…

    I didn't read all the prior pages as I'm boondocking on a cell connection so maybe this was asked/answered.... Does everyone use the 3.2v cell voltage to calc Ah? My 2x 280Ah would then be 7168Wh? That would make the raw component (cells&bms) cost 1125/7168=15.7c and probably another 1-2c in...
  4. shadowsteve

    Off-grid Solar / Battery monitoring and control freeware

    On my Rover I'm using a RJ-USB cable that came with it. On the Tracer I used prior I ground down an ethernet cable connector to fit into the 6 pin socket and modified an RS-USB cable to work.
  5. shadowsteve

    3 BMS - 1 missing bluetooth module, can I use it until the part arrives?

    I'm using ESP32 boards on each BMS sending data to MQTT/Influx/Grafana on a Pi4 and display is via web page or the Pi3/TouchScreen For changing settings I swap to the BT interface and Android app
  6. shadowsteve

    3 BMS - 1 missing bluetooth module, can I use it until the part arrives?

    You can move the BT module between BMS units to check status or change settings with no problem. Just disconnect the app from it and unplug it then plug it into another BMS. I've switched to using a centralized monitoring system as the BT requires switching between interfaces to check each...
  7. shadowsteve

    Off-grid Solar / Battery monitoring and control freeware

    My install is in an RV. The Pi4 runs off a 12-5v converter. Using a desktop/laptop in my application is a waste of space & power. I also have Plex on the Pi4 so it's my media server as well. The choice of what hardware to use is specific to each person. The cost of the Pi is a tiny expense in...
  8. shadowsteve

    Gas-Powered Lawn Equipment Will Soon Be Banned In Cali, a broad category that includes generators.

    I switched out my aging Honda for a Greenworks 80v mower I got from Costco here in Canada. I have a 1/2 acre property so probably cutting about 1/4 acre and I can do it on one charge. The mulching isn't the best if the grass is damp at all. In that case I need to wipe accumulated clippings about...
  9. shadowsteve

    I can't even express the right words....

    I worked with PDP 11/70's in the 80's. The RM05 drive was 256mb and held a platter stack that went into a top loading "washing machine". If I was running a data intensive app the cabinet would shake like it a washer on spin cycle :)
  10. shadowsteve

    I can't even express the right words....

    My first remote connection method was 110baud acoustic coupler. I brought a Decwriter home from work so I could dial in to fix system problems rather than make the 2 hr round trip on weekends or nights. I stilled charged 4hrs work time though :)
  11. shadowsteve

    JBD BMS Wi-Fi Module

    I couldn't get a Wemos D1 R1 to talk to the BMS modules. I'm using ESP32's now and they are working fine. I have them reading the data and publishing to the MQTT on a Pi4
  12. shadowsteve

    DIY 280Amp LifePo4 With BMS voltage problem.

    You can get two Renogy 60A DC-DC @ 260$ each and parallel them. Are you wanting the max charge amps to reduce the engine run time? I didn't go back thru the thread but I recall you had some high current loads you needed to make up for with the charging. Alternative would be a portable generator...
  13. shadowsteve

    DIY 280Amp LifePo4 With BMS voltage problem.

    There's a BMS parameter for max charging rate. You are likely exceeding that even with the 250A BMS. What voltage is the alternator putting out when it's running? You need to make sure you aren't too high for the Li batteries.
  14. shadowsteve

    DIY 280Amp LifePo4 With BMS voltage problem.

    No, not good to let the BMS act as the disconnect. You need to have equipment between the alternator and the BMS to control the charge current. Like this: https://www.renogy.com/12v-60a-dc-to-dc-battery-charger/ BTW, I just disconnected the shore power from my trailer and the 12v draw dropped...
  15. shadowsteve

    DIY 280Amp LifePo4 With BMS voltage problem.

    How many charge amps does the BMS show when it shuts down? I charged my batteries this afternoon from the onboard Progressive Dynamics unit which is capable of 90A. The batteries were @ 80% and after a minute or two @ 60A they dropped to taking ~42A total (21A each). You could use a DC to DC...
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