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Hi,
I don't know how to read data and also how to check if it read protected. Please indicate me the hardware that I can use or a datasheet where I can read from.
This EEPROM is used as a count down counter in a machine.
Thanks,
Bruno
Taking in consideration the comments I have layout a a circuit. That will give a 3,3V protection of the input? What should be the wattage of each device? And whats the best option of the NPN transistor?
Yes, I'm concern. But at the moment I cannot know the voltage spike that will occur. Perhaps a zener+resitor in parallel will avoid the voltage go above 3,3V?
Perhaps, I will change my question to: What I can do to avoid the input going above 3,3V on the ESP32?
The datasheet that I sent is the...
Sorry, perhaps I was misinterpreted! I was referring that the inrush current will induce a voltage greater than 3,3V at the input of the ESP32. I’m afraid of burning the microcontroller.
I know that it is rated for 5A as nominal current, and I will have a current greater than 5A on the current...
Hello!
I have a project where I have to reads the current of a compressor. It has a nominal current of 4,5A and the maximum of the board is 5A:
https://www.seeedstudio.com/Grove-Electricity-Sensor-p-777.html
My doubt is when the compressor kicks in, the inrush current can burn the input of the...
Hello!
I have the attached capacitor with HPF graved on it. When I measure with a multimeter, across the leads, it gives me 30ohms both ways. That means it is shorted or has a built in resistor?
Does HPF stands for High Pass Filter? With means it has the resistor nad capacitor inside it...
Hi!
Is it possible to use Modbus RTU directlly on the pins of an ESP32? Using arduino framework on VSC. Or should I use a MAX485?
For measuring miliamp current in a 240Vac system can I use ACS712? Is there other option?
Thanks,
Bruno
Hello!
Thanks for the inputs! I have attached the photos of the board. Today, I could measure it with a paquimeter and it has 23mm between the two pin headers and 2,54mm pitch:
I have boards from different suppliers and I thought that it would be standard these two measures, but I'm afraid...
Hello!
I have several ESP-32S NodeMCU boards. I'm going to design a PCB board to connect to it by SIL header blocks. These boards have a pitch of 2,54mm? And the distance from side header pins is 25,4mm? This dimensions are standard for the reference of this board?
I have tried to find a PCB...
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