Questions tagged [logic-level]
Logic level refers to the input and output voltage levels of digital logic, which is often 3.3 V or 5 V.
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Adding level shifter circuit conflicts with other microcontroller peripherals
I'm working on a synthesizer with multiple functionalities (OLED I2C screen, encoder, audio, midi input, several keys input) on a Xiao RP2040.
I wanted to add a PS2 keyboard input.
RP2040 GPIO are 3....
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Interfacing Delta PLC and Arduino (Logic Signals)
I am trying to connect a Delta PLC (DVP-10SX) to an Arduino UNO. What I'm trying to achieve here is to be able to exchange Logic signals between both the PLC which has a logic level of 0-24V and ...
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How to understand this combinational cyclic circuit made of interconnected SR latches?
I'm trying to understand the following circuit, or better said, what must be the approach to analyze other similar ones:
What I'm doing for now is forget about the clock signal and the ...
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Gate of Logic level MOSFET connect to Esp32 gpio
I want to use IRLR024N logic MOSFET to switch on/off a Sim800L module. This module consume 2A for 500μs and then consume only 200mA. I supply this module with 4V. This MOSFET able to switch on this ...
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Question regarding isolation and level shifting
What are the requirements that make one choose between physical isolation and simple logic level shifter circuits when you have two devices communicating with each other.
For example, a circuit ...
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MicroUSB to MCU interface with logical level conversion
I'm trying to interface a micro USB port to a microcontroller but I'm not sure about something.
The micro USB port will be connected to a computer with a simple USB cable and that will give me a 5V ...
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Logic level mosfet wont drive solenoid
I am trying to find out why my current mosfet is not working by looking over the datasheet. Ultimately I am just trying to buy a mosfet that I know will work, but I want to understand the datasheets ...
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Logic Level MOSFET Behaving Unexpectedly Driving PWM Signal to PSU
I am trying to control a MeanWell dimmable PSU with an Arduino. Since I do not want to exceed 60% of the output of the MeanWell, I want to use a 0 to 6V PWM signal. I figured a quick and dirty way to ...
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How do I wire a Rasberry Pi 3B+ to a WS2812b RGB strip?
I am working on a project where I need to use a WS2812b RGB strip. I am really worried because I have already burnt 2 Raspberry Pis with my wiring. I just want to show my schematics, and be assured as ...
user218251
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Drive an HX-53 IR Transmitter using an ESP32 and logic level converter
I have an ESP32 with which I need to drive an HX-53 IR transmitter.
I'm facing some range problems particularly for three reasons:
The HX-53 is supposed to be driven with 5 V.
There is an LED in ...
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Understanding TXB0104 logic level shifter from TI
I’ve been reading through the data sheet and have been having trouble finding an answer. I’m looking to use this to communicate SPI between a 5V mcu and a 3V3 device. Can the TXB shift the 5V to 3V3 ...
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Do I need to level shift the PWM signal from a Raspberry Pi Pico for regular RC servo?
I am trying to control regular SG90 servo with a Raspberry Pi Pico. My problem is that those servos produce maximum torque while powered by voltage between 4.8V to 6V (5V is optimal for me.)
I powered ...
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Level shifter breaks down (repeatedly)
I created a Dometic Airco thermostat using esphome on an esp chip. The Dometic is expecting 5V on the serial control line, not the 3.3V coming from the esp.
So I implemented a simple circuit using a ...
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Connecting a ESP8266 GPIO Input to a 4.2V
I am following this great article on building a low power sensor using ESP8266. The author (Gadjet) connects the GPIO12 pin to a LIPO through a 10K resistor. I am not sure if this a great way to do, ...
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How does a logic level converter with a N-channel MOSFET work?
I am trying to convert a 3.3 V digital signal to a 5 V digital signal. One way to do this is to use a logic level converter with a N-channel MOSFET and 2 resistors. I found the following schematic:
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