create own firmware with just selecting features you're interested
Demo account: demo / demo
Sensors: BMP 085/180, 1-wire DS18B20, DHT 11/21/22, AM2321
Services: myddns.ru (DDNS), flymon.net, Gismeteo.ru, MajorDoMo, Narodmon.ru, sms.ru, Zabbix
Hardware: RTC DS1307, RTC DS3231
System: NTP, I2C, Telnet, HTTP, Calendar, GPIO, OTA, Hardware PWM, UART, Scheduler, Thermostat, Code designer, Logic, UART bridge
Display: LCD 1602/1604/2004, OLED SSD1306
Sensors: BMP 085/180, 1-wire DS18B20, DHT 11/21/22, LM75, INA219, DS1621, BH1750, AM2321, BME280, SHT21/SI7021, SHT1x, MAX6675, PZEM-004T, CO2 MH-Z1x
Services: wunderground.com, Thingspeak.com, myddns.ru (DDNS), flymon.net, Gismeteo.ru, MajorDoMo, Narodmon.ru, sms.ru, MQTT, TCP, Zabbix
Hardware: RTC DS1307, RTC DS3231, ADC PCF8591, ADC MCP3201, GPIO PCF8574, GPIO MCP23017, GPIO 74HC595, PCF8583, RC 433/315, IR, FM, Livolo, NRF24, Stepper, SIM800 SMS, SD Card
System: NTP, I2C, Telnet, HTTP, GPS, Calendar, GPIO, OTA, Deep sleep, Counter, Interrupts, Software PWM, UART, Scheduler, Thermostat, Code designer, Logic, UART bridge
Display: LCD 1602/1604/2004, OLED SSD1306, TFT ILI9341, TM1637, MAX7219, HT1632, Nextion HMI, MAX7219
Beta: GP2Y1010AU0, HX711, ADC ADS1115, VZ-89T, Touch, TSL2561, iButton
Try it out without registration: w/o OTA 0x00000.bin and w/ OTA 0x00000.bin
it is recommended to flash blank before flashing firmware 0x00000 blank1m.bin, of course don't forget to select 1 MiB flash size in your flashing tool, w/ OTA version gives ability to get bugfixes with just one click