Split Sensor Data Received - MIT App Inventor Help Home » Arduino Ble Send Float » Split Sensor Data Received - MIT App Inventor Help Maybe your like Arduino Ble Shield Tutorial Arduino Ble Tx Power Arduino Ble Uart Example Arduino Ble Uart Service Arduino Ble Vs Iot Loading Split Sensor Data received MIT App Inventor Help ble, bluetoothble, arduino, bluetooth ChrisWard April 27, 2022, 9:22pm 21 AshishK: when I tried to use a logic operator to compare characteristicUUID to the UUID recieved. Nothing is printed at all. Try the "Text Compare" Block for that. 1 Like ChrisWard April 27, 2022, 9:28pm 22 AshishK: Bytes has so far been the only thing that worked If you stick with BLE, you may have to use bytes instead of floats because the Nano 33 on-board BLE seems to have issues with numbers. However, it should work with text strings and App Inventor can, if necessary, work with text as though it were a number. Your particular Nano has a trick up it's sleeve - it can use Bluetooth 'Classic' and Serial Comms, much easier to work with than BLE. I don't know how you switch between the two modes though. Still, this is hypothetical really if the App is to receive the Vegetronix data. 1 Like ChrisWard April 27, 2022, 11:42pm 23 Ashish, your Sketch is the most scruffy I have ever seen - it has more unused/unnecessary lines than those actually used. Given that, how can we be sure that you have setup the hardware correctly? Note that the UUIDs cannot be identical, they must be unique (Universally Unique Identifiers). Here is a tidied-up Sketch that on a nice day should send float values to the App. Ensure the App has the new UUIDs and only floats are registered before testing. Test as an APK. DHT22toApp.txt (3.9 KB) 1 Like ChrisWard April 28, 2022, 12:14am 24 So I think you have success connecting. Here is a way to handle the data coming into the App (click on the image to view clearly): blocksDHT221029×789 90 KB 2 Likes ChrisWard April 28, 2022, 12:18am 25 Make sure you have the latest BLE Extension installed, which is currently this one (20201223): https://www.professorcad.co.uk/appinventortips#TipsBluetooth 1 Like AshishK April 28, 2022, 1:46am 26 Thank you so much for all your help, I will be able to test these things out on Friday. Sadly I share this board with a person I work with for a college project and he is currently using it to make sure our Vegetronix VH400 is working properly, along with our relays for a few things we just wish to turn on and combining code. The vegetronix data, I might just scrap and not send it to the app at all. Seems more like a hassel, the sensor data is used to turn on a water pump anyways, so the app doesn't really need to show the data so long as the board turns on the pump The code had a lot of lines commented out, because I wanted to sorta narrow out the problem. However, I truly appreciate your help on this. The nano 33 has definitely made me pull some hair out trying to make it function. AshishK April 28, 2022, 1:54am 27 So originially when we came up with the idea of creating this project (A self-caring mini-greenhouse). We thought about using WIFI, however I am not very comfortable with making things work over WIFI yet and didn't really have the time to learn it since I am also taking 7 classes this semester for college. AshishK April 28, 2022, 1:54am 28 Oh sorry, my andriod Device is a Samsung Galaxy S21+ ChrisWard April 28, 2022, 9:07am 29 Well, having slept on it, I can see I ignored my own advice You can use one float characteristic for both float values. I will correct my code and post it. ChrisWard April 28, 2022, 9:20am 30 AshishK: So originially when we came up with the idea of creating this project (A self-caring mini-greenhouse). We thought about using WIFI, however I am not very comfortable with making things work over WIFI yet and didn't really have the time to learn it since I am also taking 7 classes this semester for college. Well, it is a great project, you could produce an App that has some commercial viability. If your friend can get WiFi code working with the VH400 and the App, all the values could be sent via Wi-Fi. Difficulty sending more than one variable from a Microchip microcontroller using BLE (HM-10) and MIT APP inventor ChrisWard April 28, 2022, 9:36am 31 The corrected Sketch: DHT22toApp_2.txt (3.6 KB) ...and Blocks: blocksDHT221002×620 52.1 KB ChrisWard April 28, 2022, 10:29am 32 See the last post on this Forum Topic by my fellow Power User Juan Antonio: Send text from Arduino to mit app using esp8266 Wifi MIT App Inventor Help I want to send temperature sensor data whenever a button named get temperature is pressed on app it should display the current temperature value. I am able to see new client request whenever I click the button and also Arduino serial print but it does not appear on the app text box... Please help AshishK April 29, 2022, 5:15am 33 Will this still work with BLE just incase, I wish I had spent the early time in my project going with WIFI, but sadly I am nearing the deadline heavily. So I have been pulling a lot of hair over nights trying to learn proper ways to create an app on AI2 using BLE. I do truly appreciate your help and I am hoping I can make this work tomorrow. edit: It is not due tomorrow, but I do have to demo it a little. ChrisWard April 29, 2022, 10:03am 34 Hi Ashish The DHT22 works with BLE. I can't guarantee that the Sketch I have sent you will work as I don't have a Nano 33 nor a DHT22, but the Sketch does compile and it's similar to other projects that other Users have found success with. You just have to test it. The snag is that the VH400 does not use Bluetooth, yet it is a very useful device for the Greenhouse. If you guys want your project to impress, try to include it. ChrisWard April 30, 2022, 9:14pm 35 How did your demo go? Do you still have hair? AshishK May 11, 2022, 9:50pm 36 It went really well actually! Thank you everyone for your help! Your solutions worked really well! 1 Like system Closed May 18, 2022, 9:50pm 37 This topic was automatically closed 7 days after the last reply. New replies are no longer allowed. ← previous page Tag » Arduino Ble Send Float Passing Float Values With Bluetooth - Arduino Forum Sending Float Over BLE - Nano 33 IoT - Arduino Forum Sending Multiple Floats Over BLE - Nano 33 BLE - Arduino Forum Sending Lat And Long Via BLE - Nano 33 BLE - Arduino Forum Best Way To Send Float Values Over BLE - Arduino - Stack Overflow Sending A Float Value Through BLE With A Custom Characteristic #1755 Sending Float Values From Arduino Nano 33 BLE Doesn't Seem To Work Receiving Float From Arduino "BLEFloatCharacteristic" Via BLE Manage Float Data Received From Ble - MIT App Inventor Help How To Send Signed Integers Or Floats Through Arduino Nano BLE ... Writing A Float To A BLE Characteristic. What Data Format? 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