In this lesson, we will show you how to make simple Internet of Things (IoT) project – to turn on/off an LED from a remote browser .
We will use Osoyoo Mega-IoT Shield to connect LED and MEGA2560 MCU board. Arduino MEGA2560 board can work as a web server. Remote browser can access this web server and control the LED connected to D13 pin of MEGA2560.
OSOYOO MEGA2560 Board x 1
OSOYOO MEGA-IoT Extension Board x 1
LED PnP Module x 1
OSOYOO 3-Pin PnP Cable x 1
USB Cable x 1
PC x 1
First, please plug OSOYOO MEGA-IoT Extension Board into MEGA2560 board:
Then connect the LED module to the D13 port of the OSOYOO MEGA-IoT Extension Board with a 3-pin PnP cable as below (Jumper Cap should connect ESP8266 RX with A8, TX with A9):
Notice: Shut off your battery or Unplug your power adapter when upload sketch code to Arduino.
Step 1 Install latest Arduino IDE (If you have Arduino IDE version after 1.1.16, please skip this step)
Download Arduino IDE from https://www.arduino.cc/en/Main/Software?setlang=en , then install the software.
Step 2 WifiEsp Library Installation (if you have installed WifiESP library, please skip this step)
OSOYOO MEGA-IoT extension TX/RX pin to Arduino A9/A8 pin by default. So in Arduino sketch code, we need use Software Serial Port to communicate with ESP8266 (set A9 as TX and A8 as RX in softwareserial object).
I have attempted using this kit through Lesson 9 and have not been able to get any LEDs working. Lesson 3 works as expected. Lesson 4 shows the expected results on the Serial Monitor and on the generated website (including the /H and /L in the URL bar), but the LED does not light. Substituting the red LED with yellow and green also shows no light. Lesson 5 works exactly as described. Lesson 6 shows the expected results on the Serial Monitor and on the generated website, but the buzzer does not activate. Lesson 7, as far as I can tell, works as expected. I have not yet studied the code, but the values on the Serial Monitor refresh constantly, while I was expecting a refresh every 20 seconds following what was said on the generated webpage, but this might be normal. Lesson 8 shows the expected results on the Serial Monitor and on the generated website; however, while the servo operates, the LED does not. Lesson 9 may be working, but the sensor only detected fire and never showed a safe condition. Based on these results, I would suspect that the extension board is faulty. Although the instructions said that if the MEGA2650 and the extension board came as a unit, they should be left that way, I removed the extension board and a visual inspection did not show any obvious defects. I reseated the extension board on the MEGA2650 and still have the same results. The only other comment I have is that there is some personal information, i.e., SSID and password, not replaced by “*******” for, I think, Lesson 8 and Lesson 17. Well, perhaps it is not the extension board. With Lesson 4 running and measuring voltages at the LED, I get 5 VDC between VCC and ground, and when I touch the multimeter at GND and SIG, then the LED goes on. What can I do to complete these lessons? The Amazon return deadline is 11 July. Should I return this item or attempt to get an exchange?
I have attempted using this kit through Lesson 9 and have not been able to get any LEDs working. Lesson 3 works as expected. Lesson 4 shows the expected results on the Serial Monitor and on the generated website (including the /H and /L in the URL bar), but the LED does not light. Substituting the red LED with yellow and green also shows no light. Lesson 5 works exactly as described. Lesson 6 shows the expected results on the Serial Monitor and on the generated website, but the buzzer does not activate. Lesson 7, as far as I can tell, works as expected. I have not yet studied the code, but the values on the Serial Monitor refresh constantly, while I was expecting a refresh every 20 seconds following what was said on the generated webpage, but this might be normal. Lesson 8 shows the expected results on the Serial Monitor and on the generated website; however, while the servo operates, the LED does not. Lesson 9 may be working, but the sensor only detected fire and never showed a safe condition. Based on these results, I would suspect that the extension board is faulty. Although the instructions said that if the MEGA2650 and the extension board came as a unit, they should be left that way, I removed the extension board and a visual inspection did not show any obvious defects. I reseated the extension board on the MEGA2650 and still have the same results. The only other comment I have is that there is some personal information, i.e., SSID and password, not replaced by “*******” for, I think, Lesson 8 and Lesson 17. Well, perhaps it is not the extension board. With Lesson 4 running and measuring voltages at the LED, I get 5 VDC between VCC and ground, and when I touch the multimeter at GND and SIG, then the LED goes on. What can I do to complete these lessons? The Amazon return deadline is 11 July. Should I return this item or attempt to get an exchange?