# Connect Arduino Mega 2560 to IOT cloud **URL:** \ **Category:** General Guidance\ **Created:** [April 20, 2022, 7:17pm UTC](https://forum.arduino.cc/t/connect-arduino-mega-2560-to-iot-cloud/983204 "2022-04-20T19:17:56Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![aqaquarius](https://avatars.discourse-cdn.com/v4/letter/a/edb3f5/32.png) [@aqaquarius](https://forum.arduino.cc/u/aqaquarius)\ **Post date:** [April 20, 2022, 7:17pm UTC](https://forum.arduino.cc/t/connect-arduino-mega-2560-to-iot-cloud/983204/1 "2022-04-20T19:17:56Z")
Hi everyone, I have a working setup that looks somewhat like this: ![image](https://europe1.discourse-cdn.com/arduino/original/4X/7/0/5/705dd91ef408a5ecbb61d121f671cd04613851c0.png) 1 IR sensor, that controls the 5 LEDs, a RTC module, a DHT22 temp/humidity sensor and 10 Relays. I was hoping to just drop in the ESP8266 ESP-01 into the working setup and get started with controling it over WIFI with Arduino IOT cloud. In another thread I leared that its not quite as simple as that, and I'd have to think about board to board communication then... Here is mentioned thread: > [@ArduinoCloud Not Declared In This Scope](https://forum.arduino.cc/t/arduinocloud-not-declared-in-this-scope/975302/6): > > Not sure how much it matters but I'm trying to configure this on a Mega 2560 with a generic ESP8266 WiFi module. I'm lacking the experience whats the easiest way to go here: 1. move my whole setup to an IOT cloud compatable Arduino device and potentially have to extend the pin capabiliy 2. Connecting a Wifi module (like the ESP8622) and make the board to board communication work. 3. ??? something I haven't concidered yet I hope somebody can drop me some wisdom. Many thanks in advance 🙂 Marius ---
**Author:** ![horace](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/horace/32/1014299_2.png) [@horace](https://forum.arduino.cc/u/horace)\ **Post date:** [April 20, 2022, 7:30pm UTC](https://forum.arduino.cc/t/connect-arduino-mega-2560-to-iot-cloud/983204/2 "2022-04-20T19:30:18Z")
> [@aqaquarius](#): > > In another thread I leared that its not quite as simple as that, and I'd have to think about board to board communication then... if you are thinking of using a [Mega-WiFi\_R3\_ATmega2560\_ESP8266 board](https://github.com/LilyGO/Mega-WiFi_R3_ATmega2560_ESP8266) which overcomes the problems of connecting a Mega to an ESP8266 have a look at [#post 39](https://forum.arduino.cc/t/arduino-mega-and-esp01-for-web-server-question/981818/39) ---
**Author:** ![aqaquarius](https://avatars.discourse-cdn.com/v4/letter/a/edb3f5/32.png) [@aqaquarius](https://forum.arduino.cc/u/aqaquarius)\ **Post date:** [April 20, 2022, 7:34pm UTC](https://forum.arduino.cc/t/connect-arduino-mega-2560-to-iot-cloud/983204/3 "2022-04-20T19:34:46Z")
Fantastic, that seems to solve all my issues. Thanks a lot horace! I'll look into it ---
**Author:** ![Nick\_Pyner](https://avatars.discourse-cdn.com/v4/letter/n/e8c25b/32.png) [@Nick\_Pyner](https://forum.arduino.cc/u/Nick_Pyner)\ **Post date:** [April 20, 2022, 11:20pm UTC](https://forum.arduino.cc/t/connect-arduino-mega-2560-to-iot-cloud/983204/4 "2022-04-20T23:20:41Z")
Since you seem well short of utilising the i/o of the Mega, you might find it simpler and cheaper to use a NodeMCU or an ESP-32 and dispense with Arduino altogether. ---
**Author:** ![Paul\_B](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/paul_b/32/216376_2.png) [@Paul\_B](https://forum.arduino.cc/u/Paul_B)\ **Post date:** [April 21, 2022, 5:04am UTC](https://forum.arduino.cc/t/connect-arduino-mega-2560-to-iot-cloud/983204/5 "2022-04-21T05:04:32Z")
> [@Nick\_Pyner](#): > > you might it simpler and cheaper to use a NodeMCU or an ESP-32 and dispense with Arduino altogether. Almost always the better idea. The active-low relay modules are readily controlled by a [PCF8575 Port Expander Module](https://www.aliexpress.com/item/32987401045.html) which will operate 16 of them and the RTC is easy to interface. A WeMOS D1 Mini is somewhat cheaper than the NodeMCU and the "extra" pins on the latter are illusory. ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [October 18, 2022, 5:04am UTC](https://forum.arduino.cc/t/connect-arduino-mega-2560-to-iot-cloud/983204/6 "2022-10-18T05:04:39Z")
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