How to wire this up, what is my mistake?

Using Arduino Sensors
1

I think I have a mistake in my wiring.

I have this:
https://wiki.analog.com/resources/eval/user-guides/arduino-uno/reference_designs/demo_cn0357

In this linked example they using it with a Arduino Uno R3, so I think the board has the same Pinout as the Arduino UNO. But I want to use it with my NodeMCU with Esp8266, and I connected it like this (the first Pin mentioned is from the NodeMCU):

3.3V Pin with the 3.3V Pin

GND with GND

D5 with Pin 13 (SCLK)

D6 with Pin 12 (MISO)

D7 with Pin 11 (MOSI)

D8 with Pin 10 (CS, AD7790)

D0 with Pin 7 (another CS, AD5270)

I used this example code and only changed in the code in the first two lines the defined Pin 6 to D0, and the defined Pin 8 to D8.

But apparently the code doesnt work for me, would be very happy for any help!

2

Why?

3

Hi,
I don't know if it's the same as the circuit you're using, but this one also shows a Vref pin.
Arduino has a Vref pin but ESP does not.

ref: EVAL-CN0357-ARDZ Evaluation Board | Analog Devices

CN0357_00_1024
CN0357_00_10241962×500 110 KB

1 Like
4

Sorry, I didnt quite get it. I am really a beginner.
So do you mean, that it isn't possible to do this with a NodeMCU?

@ruilviana

5

So I guess this is false. I plugged the 3.3V of the NodeMCU to the 3.3V of the eval board. I am really a beginner, would appreciate a explanation if it is false

6

Hi,
In this link you have the complete schematic of versions B and C of the shield

https://wiki.analog.com/resources/eval/user-guides/eval-adicup360/hardware/cn0357

7

Thank you a lot, but unfortunately I can't quite understand such schematics. Is it even possible to use the eval board with NodeMCU? I read that the Eval Board has the AD7790 and this can operate on 2.5-5.25V, so it must work, right?

@ruilviana

8

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Thank you

9

Hi,
I'm not sure.

10

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