# Receive data In nodemcu 8266 from Arduino Uno **URL:** \ **Category:** General Guidance\ **Created:** [July 24, 2022, 5:50pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660 "2022-07-24T17:50:14Z")\ **Posts on this page:** 11\ **Page:** 2
**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:** [July 25, 2022, 2:59pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/21 "2022-07-25T14:59:28Z")
> [@GolamMostafa](#): > > You have two analog sensors - Ph and TDS. Node has only one ADC channel. Nothing a [74HC4052](https://assets.nexperia.com/documents/data-sheet/74HC_HCT4052.pdf) won't fix perfectly easily! ๐Ÿคจ ---
**Author:** ![GolamMostafa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/golammostafa/32/239011_2.png) [@GolamMostafa](https://forum.arduino.cc/u/GolamMostafa)\ **Post date:** [July 25, 2022, 3:24pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/22 "2022-07-25T15:24:43Z")
> [@Paul\_B](#): > > Nothing a [74HC4052](https://assets.nexperia.com/documents/data-sheet/74HC_HCT4052.pdf) won't fix perfectly easily! Connecting an analog multiplexer and drive it properly is another side job. @alaminrifat may try with the following 4051-based single-ended network if it works? ![4051x](https://europe1.discourse-cdn.com/arduino/original/4X/3/b/7/3b7c62765b0c60a4198764b4ed0f29b4725d1405.png) ---
**Author:** ![BitSeeker](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/bitseeker/32/1241632_2.png) [@BitSeeker](https://forum.arduino.cc/u/BitSeeker)\ **Post date:** [July 25, 2022, 3:40pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/23 "2022-07-25T15:40:20Z")
If the ESP8266 hasn't been purchased yet, then an ESP32 has multiple ADC channels and more pins available. ---
**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:** [July 25, 2022, 10:34pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/24 "2022-07-25T22:34:59Z")
Quite so. ๐Ÿ˜ ---
**Author:** ![GolamMostafa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/golammostafa/32/239011_2.png) [@GolamMostafa](https://forum.arduino.cc/u/GolamMostafa)\ **Post date:** [July 26, 2022, 3:00am UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/25 "2022-07-26T03:00:39Z")
> [@BitSeeker](#): > > If the ESP8266 hasn't been purchased yet, then an ESP32 has multiple ADC channels and more pins available. **ESP8266 Board** ![ESP8266 Board](https://europe1.discourse-cdn.com/arduino/original/4X/f/0/5/f05d9f1a67d640e12c5f75987bf70229dc7cd31b.webp) **ESP32 Board** ![es32BoardPic](https://europe1.discourse-cdn.com/arduino/original/4X/2/0/b/20bcf6ef9c61cbcfcf99aa1ec9ff93bf09416dc7.png) ---
**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:** [July 26, 2022, 10:12am UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/26 "2022-07-26T10:12:56Z")
Where did PighiXXX go? ๐Ÿคจ ---
**Author:** ![alaminrifat](https://avatars.discourse-cdn.com/v4/letter/a/74df32/32.png) [@alaminrifat](https://forum.arduino.cc/u/alaminrifat)\ **Post date:** [August 3, 2022, 8:09pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/28 "2022-08-03T20:09:42Z")
I have 2 int variables and 1 float variable. So, What code should be on my sender and receiver side? ---
**Author:** ![GolamMostafa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/golammostafa/32/239011_2.png) [@GolamMostafa](https://forum.arduino.cc/u/GolamMostafa)\ **Post date:** [August 4, 2022, 12:35am UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/29 "2022-08-04T00:35:58Z")
What is your setup -- Node, UNO, and UART or ESP32, UNO, and UART? ---
**Author:** ![alaminrifat](https://avatars.discourse-cdn.com/v4/letter/a/74df32/32.png) [@alaminrifat](https://forum.arduino.cc/u/alaminrifat)\ **Post date:** [August 7, 2022, 2:29pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/30 "2022-08-07T14:29:26Z")
See I've Done my project - Here is my GitHub project repo - [https://github.com/alaminrifat/water\_monitoring\_IOT](https://github.com/alaminrifat/water_monitoring_IOT) You can give suggestions to optimize the code. Thank You and everyone for your help. ---
**Author:** ![GolamMostafa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/golammostafa/32/239011_2.png) [@GolamMostafa](https://forum.arduino.cc/u/GolamMostafa)\ **Post date:** [August 7, 2022, 3:49pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/31 "2022-08-07T15:49:48Z")
> [@alaminrifat](#): > > See I've Done my project - > Here is my GitHub project repo - [https://github.com/alaminrifat/water\_monitoring\_IOT](https://github.com/alaminrifat/water_monitoring_IOT) **Q1.** Why have you initialized to an integer value when the declared variable is float-type? ```arduino float temperature , tdsValue = 0; ``` **Q2:** The value is already in float and yet why have you **casted** it to float? ```arduino float phValue = (float)avgValue * 5.0 / 1024 / 6; ``` **Q3.** Why have you inserted pair of double quotes when you are printing only a single character? ```arduino Serial.print("A"); ``` **Q4.** In the _for()_ loop, why have you not placed the sub-ordinate clause within pair of braces? ```arduino for (int i = 2; i < 8; i++) //take the average value of 6 center sample avgValue += buf[i]; ``` ---
**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:** [February 3, 2023, 3:50pm UTC](https://forum.arduino.cc/t/receive-data-in-nodemcu-8266-from-arduino-uno/1015660/32 "2023-02-03T15:50:14Z")
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