ESP8266 - no start-up after soldering resistors R3 and R4 in the LED driver

Hello

Colleagues! I made such a controller (controls 4x LED strings on 230V). Controller with option: WiFi + IR - so for convenience.
Some time ago a prototype was created on a universal board. And once I got to grips with the software, I decided to design the PCB. I ordered the boards from jlcpcb.com.
When the boards arrived I assembled 1x copy and flopped. A whole Sunday wasted looking for a bug. Unfortunately I failed.

Well, the problem is very strange. Assembled circuit:
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It does not want to start when resistors R3 and R4 are soldered in
here is the schematic:
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At first I thought it was some error in the PCB design: a short circuit, missing ground, or a faulty component. So I checked the PCB for possible short circuits, replaced the thyristors, MOC3041 optotriacs and no improvement.
I figured I would connect the Arduino serial monitor and eavesdrop on the transmission. Unfortunately no connection could be made.
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When I pull the ESP8266 out of the cradle, the module itself starts up and then draws 78mA (which is about the same as the working prototype) and works fine (connects to WiFi).
But when I put the ESP8266 module back in the cradle and apply power, the chip draws about 46mA
I conclude that it crashes on startup.
I don't know what is!
I have checked the power supply.
The problem goes away when I unsolder R3(D3) and R4 (D4)

The difference between the prototype is that in the prototype there were 4x Leds in place of the optotriacs and the power was taken from the USB of the computer. I also noticed that in the prototype the Leds at the output of D3 and D4 always flash briefly on start-up

A mistake in the projection, as you have already pointed out. Check what the manual says about pulling down to ground these two pins during startup.

Reverse the control. Anodes of optotriacs to + and control from ground side

Read http://uczymy.edu.pl/wp/blog/2016/09/25/wemos-d1-mini-esp8266-troche-inaczej/ section "Do not touch"

Thank you all for your valuable comments.
I actually changed the program and connections in the circuit and the whole thing started working properly.

Unfortunately I used all GPIO outputs
And I need to have WiFi RESET functionality. For this purpose I was using 1x PIN and when HIGH state appeared on it, the program was performing the function of resetting the settings from WiFi.
Can I use PIN A0 in this situation?
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maystero wrote:

Can I use PIN A0 in this situation?

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You can use it as an input pin except that you will be reading an analogue value, i.e. the voltage value on this pin, which should be between 0 ... 1V.
https://arduino-esp8266.readthedocs.io/en/latest/reference.html#analog-input
https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/

khoam wrote:

maystero wrote:

Can I use PIN A0 in this situation?

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You can use it as an input pin except that you will be reading an analogue value, i.e. the voltage value on this pin.
https://arduino-esp8266.readthedocs.io/en/latest/reference.html#analog-input
https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/

will you give an example?

maystero wrote:

will you give an example?

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You are very welcome:
https://github.com/wemos/D1_mini_Examples/blo...asics/ReadAnalogVoltage/ReadAnalogVoltage.ino

Jarzabek666 wrote:

Rather not wemos on A0 have voltage dividers. 1:3, unless you correct the factory and discard this divider or include it..

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This extra R9/R10 divider is not needed at all. All you need is the A0 pin on the Wemos to have a pull-down to ground, and a 3V3 supply voltage is applied to the button.

Added after 6 [minutes]:

Wemos D1 mini schematic below. The ADC is a direct input to the ESP8266.

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Jarzabek666 wrote:

As this is on the right R1 R2 ?? there would be conflicting info because wemos have a 3.3V ADC input and as you know bare ESP has up to 1V.

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It is as you wrote earlier - the voltage from A0 is divided by about 3 before it is fed to the ADC in the ESP8266. This doesn't interfere in any way with what I wrote in post #10. Well, except maybe that you don't need an extra pull-down to ground, you just need to apply 3V3 voltage to A0 with the switch, which will give a reading of 1024 .

maystero wrote:

Unfortunately I have used all GPIO outputs
And I need to have the WiFi RESET functionality.

You can reset the wifi with a command from the IR remote control

tos18 wrote:

maystero wrote:

Unfortunately I used all GPIO outputs
And it needs to have WiFi RESET functionality.

You can reset wifi with a command from the IR remote control

A silky idea!

The only thing is, if you think about it carefully, someone will accidentally press the "button" and you will need to pair the chip with WiFi all over again.

I also have a small question...

I'm struggling with data conversion.
I have a PWM controller on the ESP8266 and the PWM range is from 0 to 1023.
And I want to convert this to percentages. I found on electrod
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But during the complication I get the message that:
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Increasing the type of the variables does nothing....
what am I doing wrong?

maystero wrote:

But during the complication I get a message that:

What type are the variables percentage and sliderValue ?

maystero wrote:

Just when you think about it, someone accidentally pushes the "button" and you need to pair the chip with WiFi all over again.

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It depends on what this "Reset" is supposed to do. Information about the last logged network (before the reset was performed) can be automatically stored in flash.

[quote="khoam"]

maystero wrote:

But during the complication I get the message that:

What type are the variables percentage and sliderValue ?


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Source:
https://raw.githubusercontent.com/RuiSantosdo...aster/Projects/ESP8266/ESP8266_Slider_PWM.ino

I have added a variable in my code:


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Macro map () only works on long int types, so before specifying the value of sliderValue you must convert this variable to an int type using the function toInt (), e.g.: .
https://www.arduino.cc/reference/en/language/variables/data-types/string/functions/toint/
https://www.arduino.cc/reference/en/language/variables/data-types/stringobject/

maystero wrote:

Only if you think about it carefully, someone will accidentally press the "button" and you will need to pair the chip with WiFi all over again.

And who said it couldn't be a sequence of three buttons ?

maystero wrote:

On the ESP8266 I have a PWM controller and the PWM range is from 0 to 1023.

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maybe just maybe:
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Gentlemen again please help. I cannot get to grips with the code.

I am rewriting,the code from the website:
https://randomnerdtutorials.com/esp8266-nodemcu-web-server-slider-pwm/

Nothing complicated, yet. The code after compiling and uploading to the ESP works immediately. Typing in the ESP8266 IP takes you to an interface with a slider where you can set yourself the PWM value. The result is displayed from: 0 to 1023
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I am trying to figure out how to make it display the result in %.
e.g. 10% or 100%

I got help on the forum and added a line like this
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Unfortunately this does not work with my assumption. I wanted between
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display the result of the variable "porcent"
and it does not display

in the serial port monitor shows correctly:

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What am I doing wrong?
How do I bite it?

oh this is my code:
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maystero wrote:

Combs how to make it display the result in %

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I think I have poorly explained what the problem is....
The problem is that EST is not displaying me the PWM value in %.

Instead of displaying the wattage of the variable percentage it displays the text
"percent"
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I don't know how to modify the part that is responsible for displaying this information.

maystero wrote:

I don't know how to modify the part that is responsible for displaying this information.

For:
I propose:
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Continues not to display string percentage
constantly shows 0

Added after 2 [hours] 4 [minutes]: .

After testing the code some more and it looks like it works!



The current percentage is shown when I refresh the page (F5)

i.e. I think something still needs to be improved....

You still need to modify the updateSliderPWM(element) function in the HTML so that it also takes into account the "percentage" variable, in addition to "sliderValue". If you can't manage it, I won't be able to deal with it until tomorrow evening unless there is another willing party before then .

khoam wrote:

You still need to modify the updateSliderPWM(element) function in the HTML so that it also includes the "percentage" variable, in addition to "sliderValue". If you can't manage it, I won't be able to deal with it until tomorrow evening unless there is another willing party before then

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Is it about this part?

I would like to bump up the topic as I can't seem to figure it out. I am very much asking my colleagues for help.