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Unanswered Questions

954 questions with no upvoted or accepted answers
4 votes
0 answers
3k views

Is there a way to use ESP8266 in promiscuous(monitor) mode and see the the wifi packets?

I didn't find much documentation about ESP promiscuous mode (just from the espressif sdk although I'm using ArduinoIDE https://docs.espressif.com/projects/esp8266-rtos-sdk/en/latest/api-reference/wifi/...
4 votes
1 answer
122 views

Can I use regular pins (Example: D2, A3, etc...) as serial (RX, TX)?

Python/Arduino Beginner here... I have a DFplayer I am trying to hook to my Arduino and I want to hook it up through the regular pins instead of the RX and TX pins, but I've not been able to find ...
4 votes
0 answers
9k views

How do I interpret the esp8266 "boot mode" message?

Everytime the chips resets, we get the reason and the next boot mode. ets Jan 8 2013,rst cause:XXX, boot mode:(YYY,ZZZ) For XXX we can check the meaning here. For YYY and ZZZ I am not sure but I ...
4 votes
0 answers
479 views

Problem in using COZIR W-100 with arduino

I was using the COZIR W-100 carbon dioxide sensor with an Arduino Mega 2560 with the example code from this site. But the measured value of carbon dioxide by sensor was 90 ppm in fresh air and that ...
4 votes
0 answers
189 views

Can d2xx connect to an arduino mega 250?

I am trying to replace a device which used a FTDI chip (http://www.ftdichip.com/Drivers/D2XX.htm) to get USB to serial. I need some more code on the chip, so I want to use an arduino mega 2560 instead....
4 votes
0 answers
7k views

Arduino GSM receiving text and then storing value as a variable in code

I am using an Arduino Mega board with a SIM900 GSM. My goal is to be able to text the GSM with a value of two digits (ex: 79) and then store that value as a variable in the code. I know how to set ...
4 votes
1 answer
1k views

3.5 inch TFT LCD connection diagram with mega r3

Forum post I would like to ask if someone has this shield fully working? My biggest problem is the touch screen that I couldn't manage to make work. Here is the code I am using: // ic: ili9327 #...
4 votes
2 answers
197 views

Turn ESP8266 into an Arduino IDE-like "sketch uploader" (over hardware serial)

I have an ESP8266 module which has downloaded a hex file for an Arduino Mega2560. This hex file (call it mega2560.hex) is sitting in the ESP's SPIFFS file system. What I want to do is basically ...
3 votes
0 answers
108 views

Why RTU bridge timeout even though answer is received?

I'm testing the following code as a bridge between https://sourceforge.net/projects/qmodmaster/ and https://pypi.org/project/pyModSlave/. As hardware, I'm using a NodeMCU 1.0 and a USB/TTL converter. ...
3 votes
0 answers
45 views

is it possible for a client esp8266 to control the esp8266 that set as an access point?

Im creating a project where i need to set one of my esp as a hotspot or access point but i would like to put a function where i could control the connected esp8266 client using the esp8266 that set as ...
3 votes
0 answers
92 views

nano 33 BLE problems with reading RC signal

I'm using an Arduino Nano 33 BLE and a L293D motor driver to control a three-wheeled RC robot. The sketch I'm using worked fine with my Uno Rev3, but I've moved to the Nano for size/weight reasons, ...
3 votes
0 answers
514 views

Integration of MAX30100 and DS18B20 Thermal Probe Integration

This is for my final year project that I have been tasked with designing a patient monitoring system. However, during the last stretch of model prototyping, I am experiencing issues with my MAX30100 ...
3 votes
0 answers
119 views

My port is grayed out?

Hello I have a question on why my port is grayed out when I go to upload? I’ve watched so many YouTube videos on what’s the problem and have been trying to do everything but just nothing seems to work!...
3 votes
0 answers
217 views

ESP8266 01 doesn't react after baud rate change

Hello guys I have my ESP8266 connected to my Arduino. Then I typed in AT in the serial monitor. It confirmed this command with OK. After that I typed in AT+UART=9600, 8, 1, 0, 0 which gave me the ...
3 votes
0 answers
2k views

ESP8266 Webserver does not respond

I am trying to reach the webserver running in my Wemos D1 Mini compatible board. I am trying one esp8266 example using Arduino examples "WifiManualServer" code below. I have replaced the SSI ...

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