How to Connect ESP-01 to Arduino UNO?
- So, you want to connect the ESP-01 module to your Arduino UNO with the help of an ESP-01 adapter? First things first, keep in mind that the Arduino UNO runs at 5V, but the ESP-01 operates at 3.3V.
- This means you’ll need a level converter for smooth communication between the two.
- Thankfully, the ESP-01 adapter comes with a built-in level converter, so you can easily hook them up.
- Just pop the ESP-01 into the adapter, making sure to line it up with the RX, TX, VCC, and GND labels.
- After that, connect the GND of the adapter to the GND of the Arduino to keep things referencing from the same point.
- Next, power things up by linking the VCC of the adapter to the 5V pin on the Arduino.
- Lastly, you should connect TXD from the adapter to pin 6 (RXD of Arduino) and RXD to pin 7 (TXD of Arduino).
- And voila, you’re set to go!.
How to Set Up Wi-Fi with Arduino?
- Alright, let’s get your Arduino connected to Wi-Fi! First, you’ll use the transmit and receive pins to set up serial communication with the ESP-01 adapter.
- Make sure you connect your Arduino to your PC with a USB cable, then fire up the Arduino IDE.
- Head over to the Tools menu and hit up the Library Manager to grab that Wi-Fi ESP library.
- Once you’ve got the library installed, open the Basic Test example under the Wi-Fi ESP, copy the code into a new sketch, and definitely save it with a name you’ll remember.
- Oh, and don’t forget to input your Wi-Fi network’s SSID and password in the sketch, leaving the password error section unchanged for your testing.
- Easy peasy!.
How to Fix ESP8266 Firmware Update Issues?
- So, here’s the deal: if you’re running into authentication failure issues, don’t panic! First, you want to head to Tools, pick your Board, and select Arduino Uno, making sure your port is set up right for some smooth communication.
- Once you’ve clicked Upload to send your sketch to the Arduino, pop open the Serial Monitor to check out the serial output.
- While you’re there, don’t forget to set the baud rate to 115200 ; this is crucial for getting the firmware version displayed correctly.
- Most folks might think their ESP8266 is rocking version 1.5.2, but updating it to 2.0.0 is the move to sync it with the actual version you’re using..
How to Test Wi-Fi with ESP-01?
- So, first things first, if you need to upload the firmware again, just enter your details and fire up the serial monitor.
- Make sure the firmware version is smooth sailing while keeping an eye on that Wi-Fi connection status—you want it to say ‘disconnected.’ Now, the device did make a valiant effort to connect to the Wi-Fi, confirming the SSID and even displaying its shiny new dynamic IP address before it threw in the towel because of a wrong password.
- However, if you set a static IP of 192.168.1.168 and connect via Port 111, you’re all set! This step verifies that the ESP-01 is working properly.
- For more inspiration, check out the Wi-Fi ESP file where you can find a bunch of commands and examples.
- Oh, and by the way, during this session, we played around with the ESP-01 adapter and the ESP8266 library; next time, we’ll be diving into connecting the IoT platform Blink with the ESP-01!.