Unanswered Questions
128 questions with no upvoted or accepted answers
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Arduino sketch works on ATmega1280, but doesn't work on ATmega328 (Arduino Nano)
I'm working on arduino based RGB LED strip controller.
This simple schematic was used to control 12V channels via 5V PWM signal from arduino:
I have also connected an HC-05 bluetooth module to be ...
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2
votes
1
answer
111
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Transmitting voice via VLC
The project I'm working on: Short-Range Coded Visible Light Communication System.
Visible Light Communication (VLC) systems use light to transfer data between transmitter and receiver over short-range ...
CommunityBot
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2
votes
0
answers
87
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Servo wont work with LED code!
I'm basically trying to combine my servo code and my LED code but whenever I add my servo code the LED refuses to turn on at all.
I am super new to arduino sorry if this doesn't make any sense!
Servo ...
- 15.4k
2
votes
0
answers
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My LED display fails with MSGEQ7 output stuck
I have an Arduino setup with a pro-mini, a MSGEQ7, and a auto-gain mic. Even if I remove the audio input to the MSGEQ7 remains the same in the 890s (out of 1024). It's the same on each of two new ...
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2
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0
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Arduino pro mini resetting itself
I am working on a brushed motor quadcopter using Arduino pro mini.
Every time I try to throttle, the Arduino gets reset by itself (motors start to spin but they will be turned off in 2 sec). I have ...
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2
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0
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185
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Single LED controlled by two pushbuttons - one of which acts like a toggle switch
Trying to control this LED with those 2 pushbuttons - one button that starts a short flashing sequence, another pushbutton acts like a toggle switch, one press bulb is on, another press bulb is off.
...
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2
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0
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Two LED Patterns Task Controlled by GUI
I am very new to Arduino and coding/programing. I set a task for myself to make a simple circuit of 5 LEDs controlled by pins 2, 4, 8, 11, 12. I want to be able to make two different pattern for the ...
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2
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How can you turn off the LEDs on a SparkFun AS7265x Spectral Triad (Spectroscopy Sensor)?
I'm a newbie to program an Arduino but I need to turn off a LED from a external Spectroscopy Sensor.
This is the Sensor:
There are three LEDs on this sensor and they're turned on automatically when ...
2
votes
0
answers
76
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Arduino Voltage Reading Problem
I was trying made a gear indicator for my bike, with manually sensing the gear shift. But failed, cause my bike has no separate "neutral" wire, instead there is gear sensor in-built...!! ...
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2
votes
1
answer
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RGB LED using potentiometer and push button
I'm currently working on an assignment which has to turn on an RGB LED using a potentiometer and button.
The problem I currently have is that the button is supposed to change the color I want the LED ...
CommunityBot
- 1
2
votes
0
answers
135
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Problems with Arduino Uno Usb 2.0 shield when using a keyboard
I have an Arduino Uno and a usb 2.0 shield in which I connected a keyboard to. I have all the necessary libraries installed but what I am trying to figure out is how to light an led when I press a ...
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2
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0
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51
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Sketch for 5 randomly fading leds not working as expected; what could be wrong?
I'm working on a project with a starry sky, based on fiberoptics and 5 leds.
The code should work this way:
Start on average brightness, then go up or down according to a set of randomly chosen ...
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2
votes
0
answers
3k
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LED strip with 12v power connected to ESP32
I'm looking at controlling a ws2811 strip and I have seen mention that you should share the same ground between the strip and the controller, which does make sense.
I do not currently have a proper ...
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2
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0
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137
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TLC5917 SPI Speeds
I am attempting to use 3 x TLC5917 chips to drive a row of LEDs in PWM. The LEDs share a common anode being powered through a transistor, with each LEDs cathode going to pins on the TLC5917 Chips.
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2
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0
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Do I need one N3904 for each LED?
I want to control 4 (or more) LEDs using the PWM output pins of my Arduino.
Here is how I have it on a breadboard, and it's working for me.
Question:
Is this schematic inefficient? Are there any ...
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