Top new questions this week:
|
|
I need to make voltage divider, so I could read a battery voltage up to 14.4 V. Could I use very high resistance resistors for that, so the current would be very low (to not to discharge battery)?
On ...
|
|
I'm using ws2812b 2x2 LEDs and have it switching between green and red, but only one of my LEDs on my 2x2 is lighting up.
I'm using the "blink" FastLED sketch with Data pin 3 on my Arduino ...
|
|
Hello dear StackExchange users,
i want to develop an Infrared blaster which i can plug into the headphone jack of a phone or console of choice. In order to communicate what frequency to modulate the ...
|
|
I am trying to get the ST7789 TFT display to work with Arduino. I followed online guides for connections and am using the fast library fron github and included workbench ino (https://github.com/...
|
|
I currently use USB-C to charge an arduino with a battery. I also use a headphone jack to output audio.
I would like to combine those two and output the analog audio through USB-C (when it is not ...
|
|
I have an oldskool doorbell chime. What i would like to do is whenever there's a voltage flowing through the doorbell also trigger an HTTP call, which will trigger some smart home automations.
I have ...
|
|
I have a 4KHz 5V pulsed signal connected to Arduino UNO pin2 (ISR).
When the board is powered, the pulse is attached to ISR rising edge, and is working as intended.
I don't know the output impedance ...
|
Greatest hits from previous weeks:
|
|
I've been looking for a while inside Arduino's files to find the core library. However, I haven't found them yet. Where on my hard drive can I obtain the core library files (.cpp and .h) necessary for ...
|
|
The documentation for attachInterrupt() says:
... millis() relies on interrupts to count, so it will never increment inside an ISR. Since delay() requires interrupts to work, it will not work if ...
|
|
What is the difference between print( ) and println( )?
I see none when I run a code.
|
|
When programming an ESP-01 with Arduino IDE, how can I make the Tx and Rx into a generic I/O pins reliably? I think there's a command to swap the Tx and Tx with other pins. I tried serial.swap() but ...
|
|
I have found code that can blink an LED on Arduino according to Heart Beat. I am using AD8232 as a sensor for Heart Rate.
Code for it is:
// Variables
int PulseSensorPurplePin = 0; // Pulse Sensor ...
|
|
I'm trying to make an opening and closing little door that should open or close every 12 hours. I was wondering if I could just make a small looping script with a delay() for 12 hours, delay(43 200 ...
|
|
For some weird reason, the following code doesn't compile. I get a "stray '\302' in program" error around volatile unsigned int encoderPos = 0;, and I have no idea what the issue is. I've been trying ...
|
Can you answer these questions?
|
|
I am searching for a tiny board to that accepts an usb-c cable and outputs 5v.
To my understanding, for the few hundred milliamps two 5k1 resistors on the board would suffice. PD is not needed.
I ...
|
|
I am using an Allwin HW-537 SIM800C module. I am also using a 3.7V 2200mAH ICR18650-22F battery which discharges about 4-5 amps according to the datasheet.
However, I am unable to get the status LED ...
|
|
I bought this waterproof ultrasonic sensor about 5 of them with the part number SR04M-2 Written on the PCB silkscreen Which is different from the usual SR04t-0.2, they are just not working, I don't ...
|
