Newest Questions
25,033 questions
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Nodemcu & GSM module & CLIP problem (CLIP line not always appears on the serial connection)
I'm working on phone-controlled car park gate. Trusted employees numbers are saved on SIM card/hard coded in program. So the idea is, if a trusted person calls the "gate number" ; Nodemcu will ...
- 11
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298
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Arduino Due: Measuring the time between pulses
I have a 'pulse train' generated from a photo interrupter and slotted disc mounted on a rotating shaft. My goal is to measure the time between each rising edge.
I have looked at the data sheet for ...
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1
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341
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Can I get some help with a metronome code on my arduino uno?
ok so I dont actually know anything about coding or electronics outside of being an electrician. This is something i've been working on for about a month.
I may be asking something dumb but here it is....
- 13
3
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21k
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FastLED library: How can I adjust the brightness of a single pixel on an absolute scale?
I'm using the FastLED library to control a digital RGB LED strip.
While this library seems very comprehensive in capability and ease of use, I do not yet see a way to simply set the brightness value ...
- 397
1
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2
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5k
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Converting human readable date to a unix timestamp [duplicate]
Can anyone provide a sample code that would convert a human readable date like 2019-10-27 22:10:35 to a unix timestamp like 1572214235?
I found many topics about it, but they eider refer to out of ...
- 252
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129
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Serial.println Issue with Flame Sensor
I'm really new to coding and Arduino so I would be eternally grateful for the help.
I'm trying to make a really basic flame sensor that beeps, lights up an LED and displays the distance from the ...
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1
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174
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How to merge two GPS coordinates without losing decimals
I want to take the GPS coordinates like 42.1234 per 22.1234 and merge them as a string, with a separator character:
42.1234 x 22.1234
But using this code:
gps_string = (String)gps.location.lat()+' ...
- 252
1
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2
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280
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Creating and Arduino synthesizer without the tone library
I am thinking about trying to make an Arduino synthesizer using the true analog output on the Due. However I would like to be able to play multiple notes at the same time on a single buzzer. Is this ...
- 113
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2
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230
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5v relay module and bulb holder
Hello sir , so can i cut the switch from the picture and connect the wires to my relay module ? Im sorry because im still learning . Thank you !
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2
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915
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WifiManager and WiFi functionally
I’m considering using wifiManager mostly to have the ability not to hard code WiFi creditntials.
But In my current code I use WiFi’s functions as WiFi.setAutoReconnect(true) and WiFi.status() != ...
- 1,049
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162
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Audio stops playing after rtc is connected
I am trying to play a song using arduino while at the same time display time using a rtc board using the tmrpcm library. However, if the rtc board is connected no sound is played.
I do understand ...
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1
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417
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Measuring Battery level with ADC already in use
I have NodeMCU v3 with ESP8266 and I am running small project where I am measuring the input from IR phototransistor via ADC pin (A0) and everything is working flawlessly.
But now I want to transfer ...
- 103
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1
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470
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Esp8266 + Atmega328p as flash
Being clear I'm not talking about How to flash ESP8266 using arduino.
I want to ask how can I use atmega328p as flash with esp8266 (instead of that 8 pin small chip on ESP-01) so that I can burn ...
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1
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288
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Laser Controller using Arduino Uno
---> I am trying to create a controller using Arduino Uno that simply detects pulses from a waveform generator mimicking a Laser Machine and then switches between 4 state machines states at the output ...
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104
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When does interrupt get fired
When does the ISR mapped to SPI_STC_vect (SPI transmission complete) get fired? Does it fire after a byte has been received (eight clock cycles) of when the slave select changes back to high to ...
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