Recent posts

#21

WBjr / Extending Purple Wire?

Last post by aaapilot - April 23, 2024, 01:24:59 PM

Can the purple wire be spliced to make it longer?  If so, aprox how long can it be?  I have a Rosie, Hawks Bay, and Classic 200 in the same system.  The WBjr is located in the Rosie and should pass along the readings to the HB, but I'm getting a discrepancy.  The shunt is located in the Rosie, so I need to add aprox 12" of wire to allow the purple wire to connect to the HB and see if the numbers are passed along to the Rosie correctly.

Secondly, I'm thinking about attaching a 2nd WBjr to the first and running the wire to the classic so I can monitor the system via the phone app.  That would be aprox 3' total, including the length of the purple wire.  Thanks all!

Dave

#22

System Design and Layout / Re: DCM9040 battery monitor

Last post by ClassicCrazy - April 23, 2024, 11:00:35 AM

Nice command central you have there Barry ! And nice and neat compared to the mess I have here - ha ha !
Larry

#23

System Design and Layout / Re: DCM9040 battery monitor

Last post by Barry Fields - April 22, 2024, 07:35:15 PM

Thanks Larry, I appreciate your input. I did look at the pzem-25. It appears to have a built in shunt. Is an external shunt a straightforward implementation.

The biggest problem I have (excluding mental issues) is the dimensions of the unit. Attached is a photo of my living room control panel. I would have to enlarge the lower right hole in that 1/8" aluminum plate to accommodate the pezm-25 unit.

All good info but I will first try the same size DCM120100C.

#24

System Design and Layout / Re: DCM9040 battery monitor

Last post by ClassicCrazy - April 22, 2024, 07:16:10 PM

As he peers thru the smoke, I came to the determination that the offset was being introduced by the meter itself.

Sooo, I decided to eliminate the 12v feed to the meter and wire it per instructions (page 5 2wire system).

ZAP  apparently the voltage limits (on page 1) are either backwards or inside out.

I will order a hopefully better upgraded version (DCM120100C) and let ya know what happens.

The old unit will be incorporated into my ongoing eclectic sculpture "Technology Fricassee" .

Here is the Aliexpress Peacefair store - they have many different DC monitors https://peacefair.aliexpress.com/store/1101058977?spm=a2g0o.detail.1000061.1.7d21tWvdtWvdXJ

#25

System Design and Layout / Re: DCM9040 battery monitor

Last post by ClassicCrazy - April 22, 2024, 07:12:11 PM

Larry, what do you use to flash your ESP32 ?

What "system"  do you use ?

Any  ESP32 development board ( there are many and they only cost $5 )  you can just plug into its micro usb jack with a regular usb to micro cable. Then just plug it into the computer. They actually made it super easy to flash Tasmota directly from a webpage though you need to use Chrome browser to do that. On some esp boards you need to press a boot button in the board first when flashing .
https://tasmota.github.io/install/
The nice thing about tasmota is it supports so many different sensors - makes life easy ! Once flashed it connects to your router and you have a wifi web page from it.
https://tasmota.github.io/docs/
Larry

#26

System Design and Layout / Re: DCM9040 battery monitor

Last post by boB - April 22, 2024, 05:21:17 PM

Larry, what do you use to flash your ESP32 ?

What "system"  do you use ?

#27

System Design and Layout / Re: DCM9040 battery monitor

Last post by ClassicCrazy - April 22, 2024, 04:32:43 PM

As he peers thru the smoke, I came to the determination that the offset was being introduced by the meter itself.

Sooo, I decided to eliminate the 12v feed to the meter and wire it per instructions (page 5 2wire system).

ZAP  apparently the voltage limits (on page 1) are either backwards or inside out.

I will order a hopefully better upgraded version (DCM120100C) and let ya know what happens.

The old unit will be incorporated into my ongoing eclectic sculpture "Technology Fricassee" .

Take a look at Peacefair PZEM-025(built in shunt)  which is a display type - I have two of those .
The PZEM-017( external shunt)  which I also have is just the monitor device with no display and I have it connected to an ESP32 flashed with Tasmota which makes it super easy to interface and then has it's own built in webpage.
I have details of these on various videos on my youtube page.
 https://youtu.be/cKJKUMLyjLM?si=_d_mc22SQZnJ3zWE
https://youtu.be/TbLLrlZ3deI?si=x_Af1dzLublTDVjx
Larry

[Just wanted to make sure they won't affect the inverter negatively.]

#28

The Rosie / Re: Rosie and Gyll lifepo4 (No...

Last post by mahendra - April 22, 2024, 03:46:52 PM

I know on the EG4 lifepower4 the older firmware would error out starting a Rosie with only 3 of them, But EG4 released new BMS firmware that starts Rosie flawlessly

Well, I should have mentioned that those were swapped with JK (Jkong bms) 100-300 BMS Four(4) to be exact because they kept tripping BMS and a non-functioning PC software that could not have even updated the firmware. A special batch of the EG4, they aren't all made the same.BMS was built well but crappy software.

Those do not trip on even Outbacks Radian.

Just wanted to make sure they won't affect the inverter negatively.

#29

The Rosie / Re: Rosie and Gyll lifepo4 (No...

Last post by mahendra - April 22, 2024, 03:40:37 PM

Well, we sorted it out !

After MN Forum guidance and careful consideration, It's a Rosie with  Barcelona prewired! 

The purchase was just made from NAWs.So they should be having one less in the inventory soon.

I will share pics hopefully soon.

And report on her performance.

#30

E Panel's, Disconnect Boxes and Breakers / Re: MNDC125 mounting orientati...

Last post by Saggys - April 22, 2024, 02:56:07 PM

Thanks boB,

This saves me money.