PD: IВґm reading certain texts again and again and again and donВґt understand anything. One button increments the value by desired step and another one decrements it. It says that its like 2 buttons assigned to 1 pin.

Just read the info-box of Blynk regarding my so thought 'pushButton' and its not. (already ordered a XL6009 DC-DC Booster and an ESP32 - as iВґll need more Outputs) here I am again.ДЄs the ESP8266 only works with 3.3V and my relays need 5V I switched the setup to LEDs. Since yesterday IВґm 15 hours in and did not advance one bit. If you had everything else done, we could focus on this. If (counter >= 2) counter = 0 // the next part will be 0-indexed, meaning the first position is 0Д®lse counter++ // so we will count from 0-2 instead of 1-3ДЈ & 4) in addition to closing the right relay, you have to open the other two, or at the very least, the previous relay this can be done a number of ways, calling one of 3 functions, a switch case, iterating over 1 dimension of a 2-dimensional array etc. This is usually a resister of some light value (10k) tied to the opposite pole, so if your finger takes it LOW the resistor will take it HIGH when you let go. when you push the button, you want to pull the input pin HIGH or LOW, but when you release it, you will want something to pull it opposite. your finger against a spring) and electrical. a push-button has 2 forces, mechanical (i.e. The button will bounce on the push and on the release. In code, you will also want to lock-out the input for a few milliseconds to prevent multiple counts on the same press. If you are new to this and don't know what is best, a 100nF capacitor between the input and ground should be enough external to 'square off' the input. external to the MCU this is usually a capacitor, a r/c circuit, a diode/cap circuit etc. This means when you push the button, you might change speeds a few times per button press if you don't have the input properly debounced. because of a phenomenon called bounce, that is when one force overtakes another, the tendency for the state to bounce between forces before resting on a final state. ThatВґs basically everything IВґve done so far ^^ giving me output on a little 128ењ†4 Oled-screen and transmitting data to the phone. Its monitoring Temp, Humidity and Lx-intensity. I have already designed a remote control via the Blynk App for my little weatherstation IВґve build. Project.: IВґm working on a wireless Fan-speed controller controlled by Blynk-App I have downloaded several libraries and tried to work my way trough, read a couple of articles and searched the web, but I somehow canВґt figure it out. the second button should alternate between relay 2 - 3 and 4 in a loop.ДЇan Speed 1 - Press button - Fan Speed 2 - Press button - Fan Speed 3 - Press button - repeat. (IВґm fine with that - thatВґs pretty easy) but.

The 1st relay will be used to switch the fan on & off I have a 4 Relay Module connected to a ESP8266. I canВґt find a solution to switch between 3 relays by only pressing one button.

3 speed fan control switch