ESP32 Bluetooth pairing
I am unable to pair my esp32 to my phone via bluetooth.
Serial.Read() of ESP32 skips 0 values when reading HEX data
I am trying to read data form my SmartMeter (Siemens IM350) and therefore i would like to use an ESP32. The SmartMeter sends data every 1 second when being called. The signal of the SmartMeter is inverted with a transistor and is read with serial2 (as the default UART0 is used for USB communication) of the ESP32.
When trying to connect to bluetooth of esp32 but in bt serail app it shows connection failed?
II’m working on a project using an ESP32 to connect via Bluetooth Serial. However, I’m encountering an issue where the Bluetooth connection shows that the socket is closed from the phone’s Bluetooth client
Troubleshooting ESP32 and 2-Channel Relay Integration: Issues with Voltage and Transistor Setup
I’m having some problems with my ESP32 circuit and my 2-channel relay (SLA-05VDC-SL-C).
Compilation error: ‘Matter’ has not been declared
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:17:40: error: ‘Matter’ has not been declared
class AirCoolerClusterHandler : public Matter::ClusterHandler {
^~~~~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:17:48: error: expected ‘{‘ before ‘ClusterHandler’
class AirCoolerClusterHandler : public Matter::ClusterHandler {
^~~~~~~~~~~~~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:18:1: error: expected primary-expression before ‘public’
public:
^~~~~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:18:1: error: expected ‘}’ before ‘public’
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:17:63: note: to match this ‘{‘
class AirCoolerClusterHandler : public Matter::ClusterHandler {
^
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:22:30: error: variable or field ‘handleReadAttribute’ declared void
void handleReadAttribute(Matter::AttributeContext &ctx) override {
^~~~~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:22:30: error: ‘Matter’ has not been declared
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:22:56: error: ‘ctx’ was not declared in this scope
void handleReadAttribute(Matter::AttributeContext &ctx) override {
^~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:22:56: note: maximum limit of 1000 namespaces searched for ‘ctx’
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:30:31: error: variable or field ‘handleWriteAttribute’ declared void
void handleWriteAttribute(Matter::AttributeContext &ctx) override {
^~~~~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:30:31: error: ‘Matter’ has not been declared
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:30:57: error: ‘ctx’ was not declared in this scope
void handleWriteAttribute(Matter::AttributeContext &ctx) override {
^~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:30:57: note: maximum limit of 1000 namespaces searched for ‘ctx’
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:38:1: error: expected unqualified-id before ‘private’
private:
^~~~~~~
C:UserssuvamOneDriveDocumentsArduinosketch_may22a_matterClustersketch_may22a_matterCluster.ino:40:1: error: expected declaration before ‘}’ token
};
^
Can somebody help me regarding ESP32-CAM (compiler not recognizing ‘fs::FS&fs’)
why doesnt it work? i dont really know to work with arduino, i just found some code on the internet where you can take a picture by pressing the reset button. since i want the photos to be taken at a set interval, i dont really need to use the reset button, but i mostly kept the code the same, only moved the call of the path function for the sd card and the taking picture function. the problem is that the compiler gives me an error for ”fs::FS& fs’ and due to my lack, i dont understand what im doing wrong.
Arduino ESP-32 C3 Hard resetting via RTS pin
I know that this is a well known feature from recent Arduino versions. I any case, when I compile and upload a very simple code to my Arduino-like board with an ESP32 microcontroller using the Arduino IDE, the Output message just stands like this : “Leaving… Hard resetting via RTS pin…” and nothing ele happens. None of the code sketches that I uploaded has had any kind of effect on the leds of the board