All Questions
Tagged with level-shifting arduino
61
questions
0
votes
1
answer
46
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Buffering Arduino SPI bus using 74AHCT125
My SPI bus has 2 slaves, one is 5V tolerant and is connected normally to the bus, however the second one is only 3V3 tolerant and so I have to level shift it. I have decided to use the 74AHCT125 ...
- 177
0
votes
2
answers
42
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I2C Level Shifting (Adafruit breakouts)
I have programmed an I2C slave on an Arduino Nano and an I2C master was on an Arduino Mega. I'm now working on upgrading the master to a Teensy 4.1.
The new master is a 3.3v microcontroller, where as ...
- 49
0
votes
1
answer
223
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Can't get SH1106 1.3 oled to work (SPI)
It's my first project this big - an arduino (Pro Micro) based midi controller. After all the research, schematics and pcb designing I got to assembly and wanted to try out the display, but then I can'...
2
votes
4
answers
189
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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 ...
- 21
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131
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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 ...
- 29
2
votes
2
answers
439
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Can I use a 3.3 V / 5 V level shifter to convert between 5 V and 12 V?
I need to interface few Arduino GPIOs to a 12 V device.
The direction of GPIOs is not fixed and can be programmed using a different set of control pins, so I need a bi-directional level shifter.
Is it ...
- 1,150
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1
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83
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Level shifting a pitot tube signal to an Arduino ADC [duplicate]
I have a speed sensor (pitot tube) that operates as described in the figure below.
My problem is that the resolution of the sensor is not good when read by the Arduino UNO ADC (around 2.75m/s.)
My ...
1
vote
1
answer
144
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Why is my MC14504B circuit acting strangely?
Chip in Question: ON Semiconductor - MC14504B
Datasheet Link: https://www.onsemi.com/pdf/datasheet/mc14504b-d.pdf
Issue at Hand:
I am intending to use this chip alongside Arduino Mega 2560. When I ...
- 11
0
votes
1
answer
117
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Why is my level shifter outputting different voltages when connected to AC power
I'm using a level shifter (https://cdn-shop.adafruit.com/datasheets/txb0104.pdf) to interface with an LCD display (https://www.sparkfun.com/products/16398) that runs on 3.3V.
When connected to a DC ...
- 321
0
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0
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133
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PCA9306 Level Translator Output is coming without providing Enable Signal
I am using PCA9306 board for level Translation .The schematic is given below.The board is purchased from third party not made by me.(https://www.sparkfun.com/products/15439)
I need to control the ...
- 2,593
1
vote
2
answers
2k
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Driving step motors using microstep drivers with teensy 4
I am trying to drive two stepper motors NEMA23 with two DM542 microstep driver (one for each) and a Teensy 4.1 as controller:
http://tinel.com/uploads/DM542.pdf
Please find datasheet of DM542 here:
...
- 21
0
votes
1
answer
302
views
Custom Ultrasonic Sensor Schematic
I am trying to recreate this project. I have the circuit constructed on a breadboard. I am using an SP232 instead of a MAX232, a TIP42CG PNP instead of a BC557 PNP, and an Arduino Uno instead of an ...
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2
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0
answers
208
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Best way to manage multiple 12V inputs and outputs from Arduino?
For a bowling alley I am going to make a circuit using an Arduino Mega to turn on arrow lights(1-4 bulbs in each) given the bowling pin lights that are lit up at the moment on a masking unit. AMF no ...
8
votes
4
answers
2k
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What is the advantage of using Logic Shifter ICs over just building it with NMOS Transistors?
I was browsing the internet for SD card module schematics for a board I am developing that should read and write data to an SD card. I realized that these modules use specific ICs to convert 5V logic ...
- 850
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389
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How to determine if level shifting is necessary between a 1.8V device (ICM-20948) and a 3.3V device (Arduino Nano 33 BLE)?
Background
I'm having trouble determining the requirements for interfacing between the ICM-20948 and the Arduino Nano 33 BLE. The biggest issue for me is that there is a detailed datasheet on the ...
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