matrixall: One more addition, I tried modifying the setup by defaulting relay to high which suppose to set the circuit open and turn off the bulb, however the light bulb is turned on :o The D1 mini has a 3.3V ultra low dropout regulator on board, so if you connect a battery with a voltage of 3.5V-5.0V to the 5V pin and ground, it'll run fine. I would suggest doing that instead of using an external 3.3V regulator and powering it through the 3.3V pin, because in terms of linear regulators, the onboard one is probably better than The WeMos D1 mini has AFAIK a better LDO with 125mV dropout at 100mA (ME6211). Did you try without the external regulator, with +batt connected to the 5volt pin. (and measure the dropout) Why change the supervisor voltage (200 ohm + 1k). The WeMos should work fine from 3volt. The 6k8 gate resistor could make the fet unstable. I am trying to put a web server on my Wemos D1 mini pro. I am using this example for the Arduino code: https: Searching infos to the Wemos D1, I landed here. Sadly the links given in OP don't work anymore, so I'm a little confused. Though I know this is a 4 year old post, I want to answer. The broken link named "Wemos D1 mini V2.0" as exactly this product name has a regulator (ME6211) behind the 5V pin that accepts at max 5.5V. WEMOS D1 MINI ESP32 . Contents. WEMOS D1 MINI ESP32. Hardware. Configuration. Uploading. Debugging. Frameworks. Hardware . Platform Espressif 32: ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and Bluetooth. y4jEGfx.

what is wemos d1 mini