Unanswered Questions
731 questions with no upvoted or accepted answers
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FS1000A transmitter and MX-RM-5V receiver not working
I'm new to Arduino development. I use Arduino Nano v3 ATmega328P (Old Bootloader). I assembled 2 small boards, one of which is a transmitter with three buttons, and the second is a receiver with three ...
- 18.2k
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53
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ESP8266 Not Booting Properly on First Power On – Works After Restart
I'm working on an ESP8266-based water level monitoring system using an ultrasonic sensor and an I2C LCD. The problem I'm facing is that sometimes the ESP8266 does not boot properly when powered on for ...
- 610
2
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2
answers
70
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Problem sending serial data between Arduino and ATtiny back and forth
I am working on communication between a Arduino and ATtiny13, and I need to get this bare-bone communication to work. There is a Arduino Nano powered by USB cable from the PC, and there is ATtiny13 ...
CommunityBot
- 1
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2
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101
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SoftwareSerial.h: No such file or directory Arduino Nano + DF player
I'm looking to play songs from a DF Player mini and for that I use the SoftwareSerial.h library but my code keeps compiling an error that it's not there. In addition, the error only appears when I use ...
CommunityBot
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-2
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1
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33
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you need to create a tachometer, but not with a hall sensor, but with a photoresistor and an LED
I'm sorry, could you help me create this arduino-based device? you need to create a tachometer, but not with a hall sensor, but with a photoresistor and an LED. The value should be transmitted to the ...
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-2
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1
answer
37
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BH350 Strain gauge Arudino naon
I have changed the strain gauge of BH350 modules with another strain gauge of equal 350 ohm strain gauge, but after the change, the readings are only 1 or 2. It's like there is no strain gauge ...
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148
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ESP8266 (Mini D1) does not come back after deep sleep but NodeMCU does
Kind of desperate here. I tried every solution found on this forum / google and others.
My sketch works perfectly with a NodeMCU 1.0
The same script should work on a Lolin Mini D1, everything works ...
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-1
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1
answer
133
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How many FPS I can theoretically get for streaming frame from OV7670 with this setup?
Setup:
OV7670 -> STM32F103... --USART--> ESP01 --UDP--> Gateway --> Internet --> Server
I want to achieve a real-time streaming experience.
Here is my analysis:
According to the ...
- 1,525
3
votes
1
answer
165
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Error trying to play audio through an ESP8266 using the 'ESP8266Audio' library
I am attempting to use an esp8266 to play an .mp3 audio file through a connected speaker using the 'ESP8266Audio' library.
I have tested that the hardware setup is correct (e.g. I have been able to ...
CommunityBot
- 1
0
votes
2
answers
108
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Connected the 3.3v output and the 5v output together
I accidentally connected the 3.3V output and 5V output to the same connection. How bad is that and what issues could that cause?
I was busy with making my first project which uses a module which runs ...
CommunityBot
- 1
1
vote
0
answers
60
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`__has_include` macro on ESP board
I am working on a code for ESP boards that can be used on either ESP32 or ESP8266 and I want to make sure I include the correct libraries.
I know I can check if ESP32 OR ESP8266 are defined, but I ...
- 201
0
votes
1
answer
126
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Trouble Programming ATTINY1616 with Arduino Nano via UPDI: No Communication
I'm trying to program a board I designed with an ATTINY1616. The schematic is shown in the photo. I'm trying to connect an Arduino Nano. +5V and GND are shared, while the UPDI pin is connected to the ...
CommunityBot
- 1
0
votes
1
answer
119
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Arduino seems to be reading incorrect analog I/O. Am I doing something wrong?
I am using an ATTiny88 to measure temperature using a 470 ohm thermistor attached to port A3 on the Arduino.
The thermistor is attached in series with an 1870 ohm resistor connected to Vcc. At room ...
- 610
-1
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2
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126
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I need two (25 and 30 kHz) pwm output on a nano
How do I create a second output with a different frequency?
void setup() {
const byte DRIVEa = 3; // Timer 2 "B" output: OC2B
pinMode (DRIVEa, OUTPUT); // driver a.
TCCR2A = _BV (...
CommunityBot
- 1
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votes
1
answer
65
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Arduino and custom pcb
I am looking to minimize the size and assembly complexity of my arduino projects. Is there any easy way to integrate something like an esp8266 onto my own pcb. I don't want to have to solder it on. In ...
- 44.8k