Questions tagged [esp8266]
The ESP8266 is a low-cost Wi-Fi chip/module with UART connections and a built-in TCP/IP stack. It has an Xtensa single-core 32-bit L106 MCU, usually running at 80 MHz.
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ESP8266: Is there ever a good reason to use the reset pin?
As I understand it, the ESP8266 can be reset by pulling either the Reset pin or the Enable pin to 0V. Holding either pin at 0V will keep the ESP in reset indefinitely.
In addition, holding Enable at ...
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ESP8266 power consumption: lower with ESP-NOW or with modem sleep?
I am making a wireless doorbell that uses ESP8266 microcontrollers. To save power, I am considering two possible approaches:
Use normal wifi, but put the modules in modem-sleep, where the processor ...
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Identifying the wire antenna used in Shelly RGBW2
I'm trying to identify the type and specifications of the wire antenna used in the Shelly RGBW2 device. Could someone help me determine its type, length, material, and suggest where I might be able to ...
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Failed to connect to ESP32
I am trying to upload code to my ESP32, but I keep getting the following error:
...
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ESP01S with HT7333 and KA75330
I am running an ESP-01S with a 3.7V 18650 battery. To do this, I am using a 3.3V voltage regulator. When the battery power decreases, the voltage also drops, and when it reaches around 3.42V, the ...
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I can't make a custom circuit to remotely control my LED strip
I have an LED strip with two pins, phase and neutral. Phase varies between 20V (LEDs almost off) and 24V (brightly on). To control it, I have an annoying IR remote. I want to eliminate it and control ...
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30n06 mosfet and Lolin D1 Mini (esp8266)
I'm pretty new to electronics, and just kinda learning how things work and trying to teach myself for the most part, but I've run in to a problem that I can't solve myself.
What I'd like to do is turn ...
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2
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Custom LED Controller - Hardware or Software issue?
I'm working on a project and could really use some help troubleshooting. I'm building a garment with embedded LED panels, and the setup involves the following. This is my first ever PCB design and ...
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How to prevent loss of current in WS2811 addressable LEDs
I am currently trying to control 300 WS2811 LEDs with an ESP8266. The software side of the project is fine. However, the LEDs towards the end of the strip are not receiving enough power (turning red ...
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SSD1306 OLED Display Issue
I’m working on a project called "SenseBox" that includes:
CH340
ESP8266
BME680 sensor
SSD1306 OLED display
https://gitlab.com/bytewire/sensebox
The hardware implementation for the Display i got ...
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G3MB-202P driven by BSS138 driven by ESP8266 barely moves 40 W fan
I use BSS138 to shift the output voltage of ESP8266 up to 5 V. Then the output is sent to the input pins of G3MB-202P.
When I turn on D4/D7/D8 pin, voltage appears on screw connectors, but it barely ...
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Influence of objects under antenna path
I'd like to implement a WiFi module with esp device. There's a chip antenna on border and I've found that under this antenna is not advised to have ground planes. Actually I don't have any planes but ...
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Can a 200 mAh 1C Li-ion pouch battery handle 500 mA draw spikes?
I am running a ESP8266 with a 400 mAh Li-ion pouch battery through a 3.3 V regulator.
I need a smaller battery to save space inside my device case. From my measurements, the overall current draw is ...
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Utilizing non-recommended digital I/O pins on the Wemos D1 Mini
I need to connect to a Wemos D1 Mini (ESP8266) the following components:
SD card
RTC
2x DS18B20 temperature sensors
The SD card and RTC are mounted on a shield and I cannot change the pins assigned ...
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Simple UPS for Microcontroller
Without regard to protection from draining the battery, for example if power outages were only a few seconds, can anyone see any problems with this simple design for supplying a low demand ...