Learn about this in the subfolders.
- LED-array
- minimal LED-array (minimal working example together with a button)
- MOTOR and Fluorescence (all-in-one) module
Download the whole folder if you are using VSCode + PlatformIO. If you are using ARDUINO-IDE and prepared it as explained here, then you only need to:
- Create a new folder in your Arduino-folder called ̀
ESP32_ledarr - Download the Main.cpp, rename it to:
ESP32_ledarr.inoand copy it into the just created folder. - double click and wait for your IDE to open. It should look like this (after you scrolled slightly down):
- Line 29 -> change the number behind
LEDARR_PINto the GPIO-PIN that you used to connect the LED-array with the ESP32 - Line 34 -> change the number from
"S007"to e.g."S001"depending on the setup-number of your RasPi. - Line 42 -> enter the name of the WiFi-network here
- Line 43 -> ... your Wifi-Password
- Line 47 -> The IP of your Mosquitto (MQTT) host, hence e.g. your RasPi (depending on how you configured your system). In our case this was:
192.168.178.160, but it can be totally different in your case.
Note: Always leave brackets or quotes where they are.
Now connect your ESP32 with your laptop. Depending on the board you bought, you have to select a different version under Tools in the IDE. In our case, we have a NodeMCU-32s connected and setup:
- Press the "upload" button (as seen on the left in the image) to first compile and then flash the code onto the Raspberry.
- UPLOAD PROBLEMS? If you see a pattern like "_____.....____" and nothing is happening, then hold the "BOOT" button on the ESP32 for a short while (3-5sec) and it should start to upload the code.
- Monitor what is happening after you uploaded the code by starting the
Serial-Monitoras boxed in the image before and change the BAUD-rate to 115200. - MQTT CONNECTION NOT POSSIBLE? Just restart the ESP32. You might have a particular button for this. If not, just unplug and plug in again. Now it should work.
Coming soon :)