Questions tagged [esp8266]
An IC that offers Wi-Fi networking compatible with b/g/n standards. It also has integrated TCP/IP protocol stack. Extremely popular along IoT community as a low cost and powerful board.
2,021 questions
-3
votes
0
answers
21
views
Clutch pull ring to disengage gear motor [closed]
How to disengage a gear motor for manually turning a valve using clutch pull ring?
- 91
-2
votes
0
answers
33
views
Controlling a gear motor turn a valve handle [closed]
How to make the gear motor to turn only from 0 degrees to 90 degrees and back to 0 degrees?
- 91
0
votes
0
answers
52
views
Trouble connecting Uno + ESP8266 to Wifi
I am trying to build a simple project to get data from a web server and display it, using an Arduino Uno R3 clone with integrated ESP8266 wifi.
What I have so far:
The ESP8266 attempts to connect to ...
- 1
0
votes
1
answer
76
views
ESP8266 + TFT SPI ST7796S - Touch and Display not working together
I am trying to get the touch screen and display working on my ESP8266 + TFT ST7796S. However, only one of them works at a time.
Below is my pin configuration:
Function
Device
NodeMCU Pin
GPIO
TFT_CS
...
- 135
0
votes
1
answer
62
views
ESP-NOW works with broadcast but doesn't work with unicast
I'm using the Arduino IDE to program ESP8266 to communicate with each other using ESP-NOW.
If I call esp_now_send with the broadcast MAC address (FF:FF:FF:FF:FF:FF), the message is sent and the slave ...
- 117
0
votes
1
answer
66
views
esp_now_send takes a non-const uint8 mac address. Why? Does it modify it in some way?
I am using the Arduino IDE to do ESP-NOW communication with an ESP8266.
In espnow.h, on line 53 I find the function prototype:
int esp_now_send(u8 *da, u8 *data, int len);
Why does it take the mac ...
- 117
0
votes
2
answers
104
views
5V DC pump connected to relay on nodemcu esp8266 running non stop
I using a nodemcu v2 esp8266 for my automatic watering system. I used 3v - 5v DC pump for the watering system. The pump is controlled based on the soil moisture level ( or Blynk ). When the code was ...
0
votes
1
answer
48
views
I've looked at the spec sheet on the ESP8266, but can't find the time it takes for the A/D conversion or the A/D control registers
text or link to describe the answer or a link to where to find the answer. I am a newbie to the esp8266.
1
vote
2
answers
209
views
ESPAsyncWebServer WiFi.scanNetworks() Soft WDT reset
I'm using Arduino IDE(2.3.5) ESP8266 (3.1.2) and ESPAsyncWebServer (3.7.4), ESPAsyncTCP(2.0.0). I need to wifi scan the network an print the result of my web interface. If I use WiFiScanNetworks(), ...
- 11
0
votes
0
answers
127
views
ESP8266 Not Booting Properly on First Power On – Works After Restart
I'm working on an ESP8266-based water level monitoring system using an ultrasonic sensor and an I2C LCD. The problem I'm facing is that sometimes the ESP8266 does not boot properly when powered on for ...
0
votes
2
answers
189
views
ESP8266 send gps data via esp now
I have a project that involves two ESP8266 and a NEO-6M GPS module. I want to send the GPS data to the other microcontroller using ESP-NOW, however it fails to send the data although it displays the ...
- 3
-1
votes
1
answer
210
views
Arduino IDE Serial Monitor is working, but not Putty - esp8266
I have an esp8266 that most often won't work with Putty, but always works with Serial Monitor in Arduino IDE.
Baudrate is set to 115200. Putty fills the terminal window with odd characters and the ...
- 1
0
votes
1
answer
178
views
Wiring of Wemos/LOLIN D1 mini and 2.13" Tricolor e-Paper?
I'm just about starting with Arduino, ESP8266, etc.
The first project would be to get something diplayed on an e-paper.
My hardware:
LOLIN D1mini V4.0.0
Tri-Color ePaper 2.13 (SSD1680) Shield
...
- 105
1
vote
0
answers
261
views
ESP8266 (Mini D1) does not come back after deep sleep but NodeMCU does
Kind of desperate here. I tried every solution found on this forum / google and others.
My sketch works perfectly with a NodeMCU 1.0
The same script should work on a Lolin Mini D1, everything works ...
- 11
-1
votes
1
answer
210
views
How many FPS I can theoretically get for streaming frame from OV7670 with this setup?
Setup:
OV7670 -> STM32F103... --USART--> ESP01 --UDP--> Gateway --> Internet --> Server
I want to achieve a real-time streaming experience.
Here is my analysis:
According to the ...
