This is a battery powered sensor board based on the ESP8266 (ESP-12F).
By using a TPL5111 chip the battery consumption can be reduced to about 1µA when the ESP is not enabled. When the TPL5111 chip receives 5V at it's wake up pin this will turn the ESP on by enabling the 3.3V voltage regulator. At this moment you can run any program you want. If you want to turn the ESP off again you have to drive...
A fully featured board based on ESP8266 and MAX31855 probe for managing temperature of electric ovens either by on-off or by pid control. The board supports 2 independent temperature probes and up to 2 relais for heating output. All the user operation is performed by a CGI web user interface provided by ESP8266 webserver and can be called by any standard html client like a webpage, a mobile or tab...
A ESP-12 IoT controller for RGB LED Stripe 5-12V.
3+1 channels through MOSFET, PWM and dimming functionality.
The MOSFETs can be replaced by NPN Power transistors (input resistors are as THT parts placed, the 10k pull down's not needed.
The 4th channel is a Logic level up-converter (3.3V->5V). Driven by a 2N7002, can be replaced with BSS138 or similar. Note that it's is a very small power output...
Home air monitor is based on the development board NodeMCU (CP2102 version). It includes a temperature sensor - ds18b20, a humidity sensor - HTU21D, a carbon dioxide sensor MNH-Z19. It is also possible to connect one more i2c sensor and a radio module to 433 MHz.
WX station using 8266 E12 with DHT22, BMP280, and ADS1115 (for wind speed, wind direction, light level sensor, and battery voltage.
Code is at:
Still working on it.. All data is raw and is interpreted in php for web.
# Wifi Modem ESP8266 - ESP-01 #
**for Retro Computer**
Simulates the old-style Hayes "AT" commands, so that the ESP8266 appears to the terminal as if it were a Hayes modem. These "AT" commands may then be issued to the ESP8266 in order to force it to connect to a wireless access point, and from there to make one or more manageable connections to the internet. It also includes...
An Arduino/ESP8266 display board for 3x2 788BS red led matrices connected to max7219 drivers.
The IREG is higher than usual to reduce brightness, use a smaller resistor (maybe 30/40 K) for daylight applications.
Work in progress, comments are wellcome.
When used with MD_MAX72XX and MD_Parola libs this matrices are not one of the supported hardware types, but I was able to wire 1 and 1+1 on a bre...
An IoT board around ESP-12S module (with ESP8266) powered by a 9V-26V DC jack, with 3 signalling WS2812 RGB LEDs, 2 buttons, an OLED display, a beeper and an I2C temperature & humidity senzor (AM2320). The board is meant to act as a hub and connect to other devices with more sensors, or as a driver for an external device.
Schema & board designer: Ivan Voras