New component: PZEM-004T Power Monitor

[jgu1]

Hi Chipfryer!

Thank you for testing my program, would you share your testprogram?

Jorgen

[jgu1]

Hi Martin!

I dared to play with your Arduino examble from WIKI meanwhile waitingtime, You could have a look at my edit progam, I added a display and disable the ack for init in the loop "!PZEM004TInitRtrnValue" It work but as you mentoid it will only show 99999,0 ect. until PZEM004 is connected.

But I dont quite understand how the alarm threshold work. I understand it´s an alarm for overpower, but where do I set the value for the alarm, could you explain Please.

Have order a TTGO for test too

Jorgen

[jgu1]

Think I got it, found where I can set the max power

[medelec35]

Hi Jorgen.
I have noticed you have got 2 x ReadVoltage functions.
I would recommend changing one of the ReadVoltage functions to ReadPower.
Also If you use ReadEnergy then x that by the price per KWh, then you will know how much you are paying for the current energy value.
I did that and it tallied with my smart meter.

Edit. I have just noticed a new post with a new project I have not yet looked at, while I was looking at your PZMLcd.fcfx project.
My comment only applies to PZMLcd.fcfx project.

[medelec35]

Hi Jorgen.
I have just tested your Arduino_Uno_Mains_PM_LCDv1.0.fcfx project on hardware inluding the display.

The only issue I have spotted is the Aalarm status string for the display is too long.
This will cause two issues.

1. The full Alarm status sting can't be all displayed on the LCD.

2. As the string is too long it overspills to line 0 on the display.
So the

Code: Select all

Freq=50Hz

is then appended to

Code: Select all

rigg=50Hz

All else is working including the UART from pin 2 which will require a TTL UART to USB converter:

UART output Uno.png (8.44 KiB) Viewed 4094 times

The one built into Arduino Uno is used for power monitor MODBUS

[chipfryer27]

Hi Jorgen

Was busy today fitting a point to multi-point link so only catching up with posts now.

Looks like you have things well in hand.

Regards

[jgu1]

Hi Martin!

Yes Martin I know, I am forced to shorten the texts, no problem, when I have received the PZEM004 I will try to use an Ili display I still can edit/use your examble.

Chipfryer, yes I think beginning to be confidential with this component, too And by study martin's way of programming, I learn something new.

Look forward to get the device and the TTGO. Thank´s for your help, I come back when something new.

Br Jorgen

[medelec35]

Hi Jorgen.
I'm glad you are getting confident with the PZEM-004T Power Monitor component.
You have done a great job with adding the LCD, well done.
In my opinion, the PZEM-004T is a brilliant device.
I have several with the 100A split transformer which is better than the 10A version since you don't need to break the wire that goes through the transformer.
As for the display showing over power and the UART wording remaining the same how about:

PZEM-004T Overpower.png (46.25 KiB) Viewed 4061 times

?

Think I got it, found where I can set the max power

That's great.
I added the Alarm Threshold Level (W) to properties to make it easier to set any value.

Alarm Threshold Level Properties.png (6.03 KiB) Viewed 4059 times

Of course, you can enter a value directly within the SetPowerThresholdLevel function

[jgu1]

Hi MArtin!

Thank you. Concerning the overpower Good idea, and when the module is connected and some value is come in, there is less digit. Alarm threshold setting in properties, very nice, so this give the next question what alarm is comming, in the display or is it possible to set an output?

Further more, I learn some new, how you use the switch IDX.smart, and can be used in other program too, give a very good overwiev

10A versus 100A ok, I think these I order is 10A. https://www.ebay.com/itm/334899613470?var=544084698363 Is it possible to change te coil?

Yes, the PZEM-004T device look very interesting an I look forward to receive and test and again a good component in FC from you .

Br Jorgen

[medelec35]

Hi Jorgen

what alarm is comming, in the display or is it possible to set an output?

You can place an output high within the Yes branch of If:ReadReadPZEM004Uint decision icon and an output low within the No branch.

Further more, I learn some new, how you use the switch IDX.smart, and can be used in other program too, give a very good overwiev

You can learn about the switch component within the Wiki.

Yes, the PZEM-004T device look very interesting an I look forward to receive and test and again a good component in FC from you .

Thank you, I appreciate the comments