IIC Bus:

SDA:GPIO11
SCL:GPIO12

PCF8575:U22 (output1-16): i2c address:0x25

PCF8575:U17 (input1-16): i2c address:0x24

24C02 EPROM i2c address: 0x50

-----------------

1-wire (pull-up resistance on PCB):
1-wire1:GPIO8
1-wire2:GPIO9
1-wire3:GPIO10
1-wire4:GPIO15
1-wire5:GPIO16
1-wire6:GPIO17
1-wire7:GPIO18

-----------------

Ethernet (W5500) I/O define:

clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41

interrupt_pin: GPIO2
reset_pin: GPIO1

--------------------
RS485:
RXD:GPIO14
TXD:GPIO13

Hi all!
I received my KC868-A16 board and now experimenting with it. My goal is to use it for Home Assistant.
Digital inputs and outputs work fine, but there are some confusing points with analog inputs.
I would appreciate clarification.

1. I used the lines from the example .yaml file and it turned out that because of the lines
------------------------------------
    filters:
      - lambda:
          if (x >= 3.11) {
            return x * 1.60256;
          } else if (x <= 0.15) {
            return 0;
          } else {
            return x * 1.51;
          }
------------------------------------
the measured voltage values were greatly inflated. So I removed these lines from my .yaml file and the voltage values became correct.
What were these lines in the original example for anyway?

2. When the same voltage is applied simultaneously to all four analog inputs, the spread of readings between them is no more than 5%. This is very good accuracy, but can it be increased by changing the parameter "attenuation: 11db" ?

3. When connecting each of the analog inputs to ground, the voltage value is not 0V but 0.14V
Is there any way to fix this?

4. And the main problem. When the input voltage changes from minimum to 3.14V, its value is displayed correctly. However, when the input voltage increases from 3.14V to 5V, it stops changing and always shows 3.14V, which is obviously wrong.
What is the problem here?

Hello

Can you tell me the resolution on the analog inputs.
Because for 1.5v in I visualize 2.01v which is 30% error..
That's a lot

Board A16

Attached Files

Image(s)
       

Hello

i have a problem with the NFP, in fact impossible to have a correct display with the right time zone.
What is the reading cycle of the NTP server?


The internet connection is good.
This NTP server works well on all my computers

The capture 3 is the time of my computer

Regards

Attached Files

Image(s)