Please do you have a solution?
The esp8266 esp-01 module is not 5V tolerant, It should be connected to 3.3v pin or use external power source which is more recommended.
also, you are connecting a relay, soil moisture sensor, ultrasonic sensor, and soil pH sensor to the 3.3v pin, I don’t think the 3.3v pin can supply enough power.
a good thing to try, connect the relay and the sensors to the 5v pin and the esp8266 module to the 3.3v or external power source.
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I did as you told me
And this is the result
21:15:01.859 -> Blynk is OK ![34795] Ready (ping: 44ms).
21:15:22.989 -> Blynk is OK ![45632] Ready (ping: 44ms).
21:15:33.810 -> Blynk is OK ![62386] Ready (ping: 43ms).
21:15:50.634 -> Blynk is OK ![73417] Ready (ping: 45ms).
Have you tried external power source method ?
I don’t know how to get it from external power source
Do you mean that I connect the Arduino to a 9v battery, for example, like this one that powers the Arduino instead of the laptop?
I meant powering the esp8266 module using external power source.
I’m sorry
I don’t know how to do that
John said you need to use two distinct power supply
It should be something like this
But, instead of connecting the arduino 5v pin to the voltage regulator input pin, connect a power source that can supply enough power to the board, phone charger for example.
If that doesn’t work, I’d suggest using esp32 board instead.
Should I buy this part?
Can’t I replace it with a battery or something I can find near me
I need the app work tomorrow
If you order this item it will not arrive in time
What happens if you power the ESP from the UNO’s 3.3v pins, and remove all the other connections to the Uno?
Pete.
Better buy an ESP32 for only $3 and throw away the Arduino uno 
23:13:31.135 -> [8890] Connected to WiFi
23:13:33.996 -> [11747] Ready (ping: 44ms).
23:13:49.226 -> Blynk is OK ![33612] Ready (ping: 46ms).
23:14:11.107 -> Blynk is OK ![55508] Ready (ping: 45ms).
23:14:33.069 -> Blynk is OK ![77343] Ready (ping: 46ms).
23:14:54.951 -> Blynk is OK ![98863] Ready (ping: 44ms).
I wish I had known that earlier
I can’t change now because time is short and I have a report
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This is a voltage regulator which can be used to generate a fixed output voltage that remains constant regardless of changes to its input voltage or load conditions.
You can use one 16850 battery or double AA batteries wired in series, but keep in your mind that the output voltage is not fixed.
No, it’s a transistor which is a semiconductor device used to amplify or switch electrical signals and power.
This is LM1117T 3.3V 800mA Low-Dropout Linear Regulator.
I’d suggest that you order esp32 board instead of wasting your time with arduino and esp8266 as wifi shield.
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