Unanswered Questions
1,701 questions with no upvoted or accepted answers
6
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Ultrasonic Flowmeter Using TDC-GP22 and Arduino Uno
I'm working on a project of Ultrasonic Flow Meter with TDC-GP22 using Arduino UNO. I used the library of leokoppel
In my code,the configurations of the registers are copied from the Application Note ...
CommunityBot
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5
votes
0
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903
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Internet in ESP32 is not working with IPv6
I am using ESP-WROOM-32D in STA mode with Arduino IDE(2.0.5) ESP32 board(2.0.9).
I am trying to do http post request with ESP32. Router that provides internet supports only IPv6.
Here I am getting ...
- 3,126
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How to set ESP32 RTC clock source
According to the manufacturer's link below, the default RTC timekeeping in the ESP32 is supposedly based on Internal 150 kHz RC oscillator.
Apparently, there is another option called Internal 8.5 MHz ...
- 610
5
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0
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SPI between Master arduino and Slave arduino
How can I send the string from Slave SPI to Master SPI?
I want to write code in Bare Metal.
The problem which I am facing is I can't make out what will be my blocking function in Master SPI code when ...
CommunityBot
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Modbus TCP/IP using Arduino uno and ENC28J60 module
I have this project where I need a modbus tcp server that will host a series of sensor data for other modbus client devices to read. I use this Library by Andresoarmento
This is the code i am using ...
5
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0
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DHT22 reading weird values
I just hooked up a DHT22 I had laying around in a parts drawer to test something and it is giving out some crazy wrong values, I am running the adafruit library's unified example and this is the ...
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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 ...
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4
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2
answers
732
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Bluetooth communication not working with DC power but works with USB power?
I am running an HM-10 Bluetooth Low Energy (BLE) module to transmit serial data (using SoftwareSerial) from an analog sensor onboard my Arduino Uno to a serial terminal app on my Android phone. When I ...
CommunityBot
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4
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0
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343
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Is Arduino WiFi101 library fully compatible with Arduino MKR1000 with WiFi HW?
Will all the classes in this library work with the MKR1000 with wifi hardware?
The guide mentions "wifi shield".
So, does the library work exactly the same with the Arduino MKR100 (with the onboard ...
- 201
4
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0
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737
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Nordic nRf905 (433MHZ) with arduino receive garbage data
I am interface Arduino with nRf905 in receive mode use 433 MHZ.
I Have follow this link http://www.electrodragon.com/w/NRF905_Transceiver_433MHz-Wireless_Module.
And for transmitter, I am use RF-...
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4
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How to filter out "jumpy" readings sent using Bluetooth
I'm using App Inventor to continuously send orientation values (as strings) to my Arduino, which are read using Serial.parseInt(). Using simple IF statements (if value > threshold), I'm trying to turn ...
- 2,422
4
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0
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650
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RFID Code (and setup) works on an UNO but not on the Yun
We're using two RDM6300 RFID readers for this, and the code works when plugged into an UNO, but not when connected to the Yun. We have one of the rfids plugged into the rx pin (0 on the digital side) ...
3
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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.
...
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3
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1
answer
151
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Arduino R3 Uno Clone - When barrel plug connected there is 5V on USB. Why?
I have been using Arudino Megas for some projects and never had this problem.
Simply enough - I am powering arduino with 12V in via barrel and take power out via VIN to 12V low very low current small ...
CommunityBot
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3
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0
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783
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How can I connect my ESP32-WROOM-32 to Arduino IDE?
I'm using this 'ESP32-WROOM-32' but I can't find the correct board in the IDE. I see the esp32-wroom-DA (edit, i took it to the store where i bought it and it worked fine with theirs. they were on ...
