ABB Aurora Web Inverter Monitor (WIM): wiring and PCB soldering – 8

Renzo Mischianti

3 years ago

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Now the hardware, I have created a PCB for this project, it is quite simple to assemble .

You can get pcb without additional costs here from PCBWay

ABB PowerOne Aurora Web Inverter Centraline PCB Soldering assembly

Welding also is simple, you just have to follow the screen printing, in the latest version it is more descriptive and intuitive (in this photo you can see the screen printing of all the components without distinction, but in the new one it is specified which minimal components you have to insert, and “No” on the optional ones, added in case of interference).

You can get pcb without additional costs here from PCBWay

ABB Aurora Web Inverter Centraline PCB up

When the board is assembled the result will be this

As you can see not all holes are used, when I created the board I added more components to use if there was some noise, but I never had such disturbances that I had to add more components than the basic ones.

So you only need the Voltage regulator the MAX3485, 2 capacitor, 3 resistor and the WeMos D1 battery shield.

PCB list of material and soldering instruction

Amount	Part Type	Properties
2	Electrolytic Capacitor	capacitance 10µF
1	Generic male header – 1 pins	pin spacing 0.1in (2.54mm); form ♂ (male)
6	Generic male header – 2 pins	pin spacing 0.1in (2.54mm); form ♂ (male)
1	Camdenboss CTB0158-2	pin spacing 0.2in (5.08mm); hole size 2.7mm; variant 90° 2 connector;
1	Generic male header – 6 pins	pin spacing 0.1in (2.54mm); form ♂ (male)
1	104Ω Resistor	pin spacing 400 mil; resistenza 104Ω; tolerance ±5%; bands 4; package THT
2	150Ω Resistor	pin spacing 400 mil; resistenza 150Ω; tolerance ±5%; bands 4; package THT
1	MAX485	variant dil; package dil08
1	LD1117V33	voltage 3.3V; package 78xxl; chip LD1117VXX
1	WeMos D1 Battery shield
1	WeMos D1 Mini	cpu ESP-8266EX;

Here some link where you can find the components:

WeMos D1 mini on WeMos D1 mini - NodeMCU V2 V2.1 V3 - esp01 - esp01 programmer

WeMos Battery shield on AliExpress

LD1117V33 Voltage regulator on AliExpress SMD (AMS1117) - AliExpress 3.3v (LM1117) - AliExpress 5v (7805) - AliExpress 9v (7809)AliExpress 12v (7812) - AliExpress 3.3v TO-92 (78L33)

MAX3485 IC on AliExpress

Then you can start to assembly, here a simple video that show all the step

SD card connection

To complete the project you must have an SD card module, I select the SD because the industrial grade are SD not microSD.

The connector of battery from the top SCK MISO MOSI CS VCC GND

SD card module AliExpress

Then you need 2 led dupont

Dupont on AliExpress

the battery connector XH2.54 male

XH2.54 male connector battery on AliExpress XH2.54 2.54mm AliExpress PH2.0 2.0mm

a switch and a push button

2 position switch Aliexpress

Push button for reset AliExpress

Battery adapter

ABB Aurora Web Inverter Centraline Battery holder with voltage divider

I use the battery shield for WeMos D1 mini, but It’s work like the power bank example, there is a charging regulator and a step-up module to stabilize voltage at 5v, refer “Emergency power bank homemade“.

Then you need to create a voltage divider to check the battery voltage on A0, for this you can refer to the diagram in this article “Voltage divider: calculator and application” and related video