All Questions
Tagged with logic-level arduino
30
questions
2
votes
4
answers
189
views
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 ...
- 21
4
votes
1
answer
136
views
LED Light Strip Control Circuit not working once assembled as a PCB
My project is to create a controller for some warm and cool LED light strips. The parts I used were an Arduino SAMD21, two FZ44N MOSFETs, and two 10 kΩ resistors. The Arduino sends a PWM signal to the ...
- 143
0
votes
0
answers
131
views
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 ...
- 29
2
votes
1
answer
928
views
What is the voltage output from STM32 BluePill Digital I/O pins?
I am planning to use logic level MOSFET IRL540 as a replacement for my 5V 1 channel relay module to protect my Arduino pro micro from current requirements of the relay module. I would also like to use ...
- 532
10
votes
3
answers
3k
views
What does the voltage of an I/O pin mean?
I'm trying to figure out the Seeed Studio XIAO board (essentially a smaller version of the Arduino) and I noticed that there was a line in the specifications saying "All the I/O pins are 3.3V, ...
- 123
1
vote
1
answer
711
views
I2C: Do I still need pull-up resistors if I use a logic level converter? I
Electronics newbie here.
I have the following setup - three Arduino Nanos, a BME280 sensor, an MPU6050 gyroscope, a GPS GT-U7 (Goovvv Tech) module and an 128x64 (1.3in) OLED display. All except the ...
- 145
0
votes
1
answer
148
views
Convert High voltage output ( 15V ) to 5 V
I want to use : DSD 70 Dual Channel Hall Effect Speed Sensor and integrate it with an MCU ( arduino ) atmega , so I have to convert the output of the sensor to 5V to be able to read it by the MCU.
Any ...
0
votes
1
answer
173
views
Data Logic Levels Sent From Sensor Are Not Going All The Way Low
I'm having issues receiving data from a 3.3 volt logic level R503 Fingerprint Module that is sent via it's Tx pin using UART. The logic levels are converted to 5 volts using a bi-directional converter....
- 228
1
vote
1
answer
736
views
Using a Non-Inverting Buffer for Level Shifting
I've got a project that involves a 5V Arduino and a Raspberry Pi Zero (3.3V) that need to communicate through a serial interface. The easy solution here would be to connect them through USB, but I'll ...
0
votes
1
answer
109
views
Would this MOSFET be suitable for use with an Arduino?
I'm looking for a MOSFET which can be controlled by an Arduino at 5V, and which can switch power on/off to a Raspberry Pi and peripherals (also 5V) that will peak around 3A of current. It's a battery-...
- 101
1
vote
2
answers
311
views
Using Mosfet with seperate Logic Converter and Arduino
I am trying to use an IRLB3034 with an Arduino even though it is not a logic level MOSFET. I am planning on using an LM2937 12v regulator like the schematic below:
The connection going off the page ...
- 39
0
votes
2
answers
139
views
Preventing overvoltage on serial pin
I am trying to send data through serial from a 3.3v Arduino to a 5v Arduino. I assume I can't just connect the 3.3v tx to the 5v rx because, when I program the 5v one I am assuming it will send 5v ...
- 447
0
votes
1
answer
250
views
Through-hole solder sparking
Here is a simple example of what been happening to various pcbs when I play with them. I have an arduino powered by USB. Then a 5V and GND connected to a logic level shifter's HIGH and GND ...
- 131
7
votes
3
answers
13k
views
Replace BSS138 with AO3400A in level shifter circuit
I have to use level shifter circuit to interface MAX31855 with Arduino running on 5V.
I found easy to build level shifter circuit at SparkFun website. It is using BSS138 (datasheet) which I don't ...
- 303
0
votes
2
answers
3k
views
Help with level shifting and ledstrip
I try to power a WS8211 based ledstrip. I first achieved to make it work with an Arduino UNO.
The ledstrip needs to be fed with 12V power.
Here is the working schematic :
Once I apply power every ...
- 121