Unanswered Questions
471 questions with no upvoted or accepted answers
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How does a sensor data move from physical layer to application layer
I have used Arduino IDE to program a IOT gateway using ESP32 and W5500 ethernet module to use them as a ethernet webserver.
I wanted to know for educational purpose, I know that sensor belong to ...
- 11
1
vote
2
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43
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Can't sync ESP32 with Blynk
I was trying to display the readings of my dht11 sensor on the Blynk dashboard but I am struggling a lot. A little help would be really appreciated.
#define BLYNK_PRINT Serial
/* Fill in information ...
- 100
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2
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59
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How can you trace out the short-term trajectory of a 6DOF IMU
I've looked and looked on forums, wrote prompt after prompt in DeepSeek and ChatGPT but I've hit a roadblock.
I'm currently working on a project where I want to write numbers in the air using a ...
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100
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ESP32 Upload Fails: “Failed to connect to ESP32: No serial data received” (Worked Previously)
I’m trying to upload code to my ESP32 board using the Arduino IDE, but I’m consistently getting the following error:
A fatal error occurred: Failed to connect to ESP32: No serial data received.
For ...
- 1,773
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66
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Initializing both I2C devices of a RP2040 Rpi Pico with Earle Philhower Core
I'm using the Arduino IDE (v1.8.19) with the Earle Philhower core to program a Raspberry Pi Pico (RP2040) board.
I2C bus 0 of the Pico (pins 4 (SDA) and 5 (SCL) are coupled to a first MCP23017 port ...
- 1
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1
answer
53
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ESP32 Timers - Controller Crashes Above 240 kHz, Duty Cycle Becomes Unstable
I'm trying to generate three synchronized signals on ESP32 for a device that requires precise timing. However, when I increase the frequency above 240 kHz, the controller crashes, and the duty cycle ...
CommunityBot
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-1
votes
1
answer
68
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Getting a WDT reset on ESP32
I have a project that uses a GY-53 BMP180 and ESP32.
Each time I connect ESP32 to USB after uploading, I get this error:
22:27:27.352 -> rst:0x8 (TG1WDT_SYS_RESET),boot:0x13 (...
- 143
1
vote
1
answer
102
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ESP32-S3 Does not read BME680 Data
I build a PCB using ESP32-S3-WROOM-1-N16R2 Controller. I programmed a BME680 sensor with this MCU. My pinouts are,
BME_SCK 38
BME_MISO 19
BME_MOSI 15
BME_CS 5
This is my Arduino code,
#include <...
CommunityBot
- 1
1
vote
0
answers
87
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"Stack canary watchpoint triggered (loopTask)" when synchronizing with Arduino Cloud IoT (ArduinoCloud.update())
I have created a sketch that updates 195 variables : 16xString variables, 34xfloat, 52xint, 107xbool.
Notice : I'm using the IDE tool instead of the included Cloud IoT compile (because I have a pb ...
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25
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ESP32 Bluetooth Pair scanFilter not working properly
I am trying to make a bluetooth device with esp32 s3. Pairing should work like a headfone. At the First start, any device can connect my ble ESP32 after connecting I will add in whitelist this device ...
- 297
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49
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Multiple esp32s running on batter power using ESP-NOW
I have a project where I'd like to have two esp32s communicate using ESP-NOW, but both running on battery. I'd like for both to be in deep sleep, wake up and communicate, and go back to sleep, repeat.
...
0
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72
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Get Hash from Biometric Fingerprint Data for Encryption
I'm trying to get a reliable hash from a fingerprint scanner to use as a encryption key. According to this post here: https://crypto.stackexchange.com/questions/103693/can-you-restore-a-private-key-...
- 101
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16
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Are sleep and reset on DRV8825 tied up to GND?
I am working on a project that has a servo and a stepper motor, so I build a circuit which have both the driver and lm7805.
The problem is that the regulator overheated very quickly. I traced the ...
- 1,525
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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
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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