New answers tagged esp32
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ESP32 SPI Mutual Communication
For ESP32, unless the exact board variant is specified, by default the macros for MISO, MOSI, SCK and SS are defined as follows and are used for VSPI(i.e. SPI0):
static const uint8_t SS = 5;
static ...
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Accepted
Some of my <include> statements do not work
Many of the ESP32 variants have Bluetooth/BLE support. The ESP32-S2 board/module you're trying to use does not. The module has WiFi, but not Bluetooth.
So you need another board, Lolin seems to have ...
- 5,008
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Automating Serial Monitor / Execute Serial Monitor Command without CMD input
You're going to have to write a piece of software on your computer with whatever is your favorite language, and run it, connected to the proper serial port. I do this a lot in applications that ...
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Connect to wifi works only without password (Problem around WPA security)
Solution, I'm using an old Freebox, which has only Open or WPA security,
Just add : WiFi.setMinSecurity(WIFI_AUTH_WPA_PSK); to allow connection to my router.
For people with WEP security, just use ...
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DS3231 RTC not working with ESP32
Warning
These modules normally come with a 200Ω resistor soldered next to the IN4148 Zener diode, as you can see in the image below.
ds3231 module problem fix
The resistor and diode form a simple ...
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PubSubClient hanging on ESP32C3
The short form of the below is something like: "After calling .beginPublish(), call .endPublish() before making a call to either .publish() or .beginPublish().
We don't have your actual code. ...
- 5,008
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Accepted
PubSubClient constructor parameter type mismatch
The issue you're encountering with the PubSubClient constructor in Arduino is related to how you're passing the WiFiClient object. You're currently using a pointer (WiFiClient *wifi), but the ...
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ESP32 + Stepper Motor 17HS3401S + A4988 driver. Stepper cannot move in Clockwise direction
I'm fortunate enough to know the cause. It's because of my fault in Wiring pins. At first, the orders on my driver pins (2B-2A-1B-1A) were black, green, blue, and red. Luckily, I came across this ...
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LILYGO TTGO T-Display cannot detect MPU 6050 Accelerometer, Gyroscope and Temperature Sensor
I had exactly the same error (Failed to find MPU6050 chip)on the same program with the same tutorial. I thought it was this, that, and an act of nature. I hade proven the MPU6050 worked fine and the ...
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