Questions tagged [hardware]
The physical circuitry and other components of a machine or device. This is distinct from the program code running on a device, which may be called software or firmware.
255 questions
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How do I reinstall Arduino IDE 1.8.12 to correct corruption, without losing all of my libraries and board installations?
I have been told to reinstall my Arduino IDE Ver: 1.8.12 to correct some corruption with my current installation.
loading hardware from C:\Users\Paul\AppData\Local\Arduino15\packages: loading package ...
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Sampling rate for Adafruit LSM6DSOX and Arduino MKR WIFI 1010
Please let me know if this post has the wrong tags, I will make sure to change it.
My goal is to get the highest sampling rate possible from the Adafruit LSM6DSOX (6667Hz) using the Arduino MKR WIFI ...
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Connecting Arduino to a cheap Graphics Card for VGA Output
I understand that the Arduino is generally not fast or powerful enough to generate a suitable VGA/HDMI signal with higher resolution.
However, I've noticed that there are inexpensive PC graphics cards ...
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ATMEGA2560 died inside a arcade game circuit
I am building arcade game with 10 player buttons (5 for each player) and one start button. All buttons have build in LED inside. Player buttons has LED for 12V and start button has led for 5V. I am ...
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Arduino Mega Loopback Test with Several TX/RX Ports
I am trying to do a loopback test using an Arduino Mega. What I am looking to do is send a byte over TX and receive said byte back at RX and verify that the byte is unchanged. More or less I just have ...
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How does C2 work on the ATMega328P?
What is the purpose of C2 on this schematic below?
How does it work when the microcontroller is being programmed?
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Arduino Uno USB 5 V and external power supply 12 V overheating
I have a issue with my Arduino Uno r3.
I'm not sure why is that happening but I have a 5 V, 18 A power supply to power my LEDs. I connected 5 V from the Arduino to 5 V from the external power supply ...
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Teensy 4.1 / 4.0 When to use FlexPWM vs QuadTimer pins to strobe LEDs
I want to strobe 3 LEDs (at independent frequencies and duty cycles) via mosfets with a duty cycle of 0.05%-1% at a frequency range of 24-100 hz. I would like to hold 1% or better accuracy for both ...
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How to pre-design circuit before buying? [closed]
I am wanting to make a simple circuit that takes input from a movement sensor and plays a sound response.
To do this I think an ESP32 microcontroler would be optimal?
But how does one go about ...
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MAX30102 not working?
I have a project to find the pulse oximetry rate. I used MAX30102 and ESP8266 as shown in the first picture.
Wiring
GND ------> GND
VIN ------> 3.3V
SDA ------> D2
SCL ------> D1
Code
I ...
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Higher than 12V Arduino Uno
On many tutorials I have looked at, they say that you should power your Arduino with a 5 - 12V external power supply, but on the Arduino, there is a voltage regulator. Is there anything wrong with ...
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ESP12F works indefinitely, then gets stuck in unrecoverable hardware WDT "boot loop"?
I have a sketch running on a number of ESP12F modules (AiThinker). They can work for months on end, can be power cycled, can be moved around, etc. It is a complex sketch with multiple parts and is ...
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pull-up or pull-down
Do you have to build the circuit on an external board every time you decide there is a need
for a pull-up or pull-down circuit? If not, then what is the alternative and how can you use
it?
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What is the advantage of higher priced arduinos to cheaper ones? [closed]
I just got an Arduino Mega ADK (which seems to be functional, based on my limited testing and knowledge) at a yard sale for under $5. I don't have any Arduino experience, but I'm into DIYing, so who ...
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Arduino Nano randomly resetting
I am currently struggling with an intermittent problem with an Arduino project.
Background
I am using a LabVIEW program to control a few pieces of hardware. One of them is a NEMA 17 stepper motor that ...
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How can I power off a servo the best way? Problems with MG90S servo [duplicate]
I have a NodeMCU and im trying to control a servo to move from angle A to B and viceversa. The thing is I want to be able to power off the servo after moving so it could stop getting voltage and ...
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Reverse engineering LIN bus on E-bike system
As a project I am trying to 'hack' an old E-bike.
The electronic system of the bike consists of:
A torque sensor measuring deformation of the rear.
A 'spin' sensor measuring if the person is pedeling....
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How to find out if HX711(amplifier and 24-bit ADC) is damaged or not?
I'm using this ADC with a load cell for weight measurement, I had 4 strain gauges and mounted them on a cantilever structure that I made out of acrylic sheet, used calibration program from here: https:...
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APDS-9960 detected but not showing output on serial monitor
I just bought an APDS-9960 sensor yesterday and tried it out today using Sparkfun's example from its APDS-9960 lib, and the only thing it printed out was:
"SparkFun APDS-9960 - ProximitySensor&...
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860
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How to Adjust MQ131 Sensor?
The problem
Hey. I'm trying to use the sensor Mq131 to measure some ozone data in a closed environment, but I'm having some bad time to adjust the trim in the sensor and get results in ppb. By ...
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Running hardware interrupt function on NodeMCU ESP8266, Exception(0) after four iterations, can't disarm interupt function
I've been trying to test the stability and consistency of hardware interrupts on my NodeMCU ESP8266. I'm using the Arduino IDE. This sketch should not require any external circuitry and I think, but ...
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HC-05 Stuck in slave loop mode (loopback)
got my HC-05 today and accidently set the AT+ROLE=2(slave loop) and now I can't get out of it! Anything I send it just resends it back to me, even commands like AT+RESET and AT+ORGL, they just get ...
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how to implement AES in LoRa Module with Hardware Flow control using ESP8266?
I am working on project where I have to do AES encryption of plain text received through normal UART port of ESP8266 create a cipher text and sending it to LoRa module (EByte E32 868T30D) through ...
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How can I understand which arduino I need to run some code?
I want to build this project (but any other project would give me the same uncertainty):
https://github.com/ltpitt/arduino-n64-controller-library
But I cannot understand which arduino I can buy that ...
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Problem to Setting up i2c OLED wemos D1 mini shiled (64*24)
Hi
I used this shield before well. But it didn't work when I wanted to work with him last night!
this is my wireing :
Now I want to know how to test that it is healthy? Is i2c address missing or not?...
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