ESP8266 π one ADC two Sensors - Temp Light

*** GPIO disabled light + temp sensors Solar version (0 mA), because you can enable the analog sensors by GPIO = HIGH and disabled by GPIO = LOW. GPIO_D0 --- 1 kOhm --- RESET (DeepSleep) GPIO_D5 --- on/off Sensor_1 (Light) GPIO_D6 --- on/off Sensor_2 (Temp) RST: 1 kOhm (deepSleep/wakeUp) ADC: 2 kOhm (analogRead) TEMP: 10 kOhm + 4.7k / 10k + Diode 1111 LIGHT: 100 kOhm + 4.7k / 10 k + Diode 1111 --- ESP8266: ADC max. 1 V !!! Light + Temp High => 0.870 V / 0.75 mA (max) At worst case both GPIO set to high. GPIO_Light = HIGH / GPIO_Temp = LOW 100% = 100 Ohm = 0.599 V / 0.428 mA 99% = 1 kOhm = 0.504 V / 0.396 mA 1% = 99 kOhm = 0.031 V / 0.235 mA 0% = 1 MOhm = 0.003 V / 0.228 mA GPIO_Light = LOW / GPIO_Temp = HIGH 100% = 10 Ohm = 0.598 V / 0.428 mA 99% = 100 Ohm = 0.588 V / 0.425 mA 10% = 9 kOhm = 0.210 V / 0.296 mA 0% = 100 kOhm = 0.031 V / 0.235 mA

published 9 years ago