esp12f

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  1. S

    ESP12f restart issue

    I have a peculiar problem with a PCB. This has an esp12f attached to two relays. The PCB has ground plane and is working fine except when I connect a 220v AC ceiling fan through a speed regulator. When I do that, I get abrupt restarts of esp12f. I have an RC snubber with CB221 capacitor and...
  2. ashokraj

    ESP12F doesnt work after cycling the power until hard reset

    Hi, I have designed ESP12F with CH340G(USB- UART converter) with auto programming feature. As shown below. I have programmed in Arduino IDE. As long as power is there, the board runs the code. But After I cycle the power, the board doesn't run the program! until I hard reset the ESP12F...
  3. ashokraj

    what are the safety/protection I will have to take when converting 0 to 240V to 0 to 1V , feeding to adc pin of microcontroller

    Hi, I want to measure the voltage of the fan regulator and feed into ADC pin of ESP 8266, The range of ADC is 0 to 1V, theoretically I can use the below circuit. VG1 being the load voltage taken from the fan regulator, VF1 will be driven into my ADC pin , My doubt is, can i go with this circuit...
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