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Uploading data

Wed, 27 May 2026 14:32:09 +0000

Hello,
I had a question regarding whether there is any way to upload externally collected sensor/data files into the app for analysis or visualization.
More specifically, I was curious if it would be possible to use uploaded data to analyze things such as barometric pressure changes from an event like a gunshot or other impulse-type event, rather than only using live sensor data collected directly from the phone.
I know Phyphox can record pressure sensor data live from supported devices, but I was wondering if there is any capability for importing datasets afterward for review, graphing, or comparison.
Any insight would be appreciated. Thanks!

Slider lazy/notinit value big issue

Tue, 12 May 2026 09:34:14 +0000

Hi,
I have big issue with slider component (other have the same issue) with ESP32 library.
PhyphoxBLE::read(...)
return always 0 (lazy not init value) until I do some change on Slider.
Slider example:

I can workaround it by

Code:
if(readValue) {

   destvalue = readValue;

}

but only for cases where slider doesn't have 0, like <1,5>, but for range <-5,5> i have 0 and it cause another issue.

Question is: how to change not init/lazy value by NaN vale or MAX_VALUE to prevent "Null" as 0.

Or how to force phyphox to init component (e.g. Slider) to start sending real values, even it is not touched?

This issue blow my application which I'm working on since 2 weeks.

I tried to change code of libraries to return not init values as NaN, but I failed. Is it possible to do on ESP32 code, or do we need to change code of phyphox?

"Add Experiment for Bluetooth Device" reporting when Bluetooth disabled.

Sun, 26 Apr 2026 09:04:13 +0000

Hiio!

Amazing toolbox! Thankyou for making it available for everyone! ☺️

Attempting to use the
"Add Experiment for Bluetooth Device"
when Bluetooth is disabled gives
"Bluetooth scan error. Bluetooth Low Energy is not supported on Android Versions lower than 4.3"
Tried re-running with Bluetooth enabled, and it proceeds just fine.

Thought the error-message could be improved to suggest enabling Bluetooth.

Thanks

T

Hilfe: Web-Dashboard für ferngesteuertes Auto

Wed, 22 Apr 2026 19:27:51 +0000

Hallo :-)

Ich arbeite grade an meinem Bachelorprojekt und bräuchte euren Rat. Ich möchte ein Smartphone auf ein ferngesteuertes Auto befesteigen um die Fahrdynamik zu tracken und die Live-Daten in ein Web Dashboard zu übertragen.

Mein Ziel ist es, die JSON Daten aus dem Experiment "Beschleunigung ohne g" per Fernzugriff auf mein Tablet zu senden und Geschwindigkeit, Brems und Kurvenverhalten in einem selbstgebauten Dashboard mit Balken anzuzeigen. Das HTML Gerüst ist fertig und ich hab es mit der Java Script "fetch" Funktion probiert, aber es funktioniert noch nicht. Könnt ihr mir da eventuell weiterhelfen? Oder wisst ihr zufällig, ob es für so ein Web-Dashboard schon fertige Code Beispiele gibt oder ob jemand aus der Community schon mal etwas Ähnliches umgesetzt hat?

Ich wäre über jeden Tipp super dankbar!

Does the app support usb sensors?

Thu, 02 Apr 2026 07:46:57 +0000

Hi,

New to the Android app, and not seeing a direct answer in general searching.

If I where to get a sensor that uses the usb interface and attach it to my phone will the app be able to detect and monitor the sensor?

Is there a step between being to the sensors on the phone out of the box and building an esp sensor box and connecting to it via Bluetooth?

While I have a pc for dev the use case is my phone as it's portable and all.

Ps.
Can experiments be set to run while the app is in the background and/or the screen is locked?

Accelerometer and gyroscope simultaneously?

Sun, 29 Mar 2026 22:45:19 +0000

Hello,
I'm a brand new user as of this afternoon. Apologies if this question has an obvious answer. I did do a search and didn't turn it up. I have the app working on an iphone and it's great. Is it possible to use two sensors simultaneously? I'd like to detect acceleration and orientation (with the gyroscope) simultaneously.

Thanks, and thanks to the phyphox team for making such a wonderful app widely available!

Few

Frequency Slider for Multi Tone Generator

Mon, 16 Mar 2026 07:52:46 +0000

In the simple tone generator there is a slider to change frequency.

It would be useful and fun if there was a slider for each tone in the multi generator.

"Mashing" smartphone GSP and Arduino sensor data

Wed, 11 Mar 2026 20:28:45 +0000

Hi,

not sure if this is the right subforum, please move if necessary.

I am trying to combine the data from an Arduino Uno R4 that has a dust sensor connected with GPS data from a smartphone. I fail with both possibilities:

1) Reading Arduino data in Phyphox
I cannot get the BLE handshake on phyphox working when creating own experiments with the editor. Bluetooth connection works, but then I get a "Write error on characteristics UUID cddf1002-...." error message. Tried tons on things and yes, PhyphoxBLE::poll() is called

TestValue

Happy if somebody has a hint, but I would prefer to get #2 working - just mentioning #1 in case #2 is not possible

2) Reading smartphone GSP data from Arduino
In the phyphoxBLE library I do not find any GPS / Location sensor

#define SENSOR_ACCELEROMETER "accelerometer"
#define SENSOR_ACCELEROMETER_WITHOUT_G "linear_acceleration"
#define SENSOR_GYROSCOPE "gyroscope"
#define SENSOR_MAGNETOMETER "magnetometer"
#define SENSOR_PRESSURE "pressure"
#define SENSOR_TEMPERATURE "temperature"
#define SENSOR_LIGHT "light"
#define SENSOR_HUMIDITY "humidity"
#define SENSOR_PROXIMITY "proximity"

Is it impossible to read GPS via phyphox library on the Arduino?

Cheers
B.

Light Frequency with ESP32 and Phyphox

Fri, 27 Feb 2026 16:28:11 +0000

I'm new to the forum, so greetings to everyone. I'm a high school teacher who has been using Phyphox and its ability to connect sensors via Bluetooth for some time, so I'm very grateful to Sebastian Staacks and his colleagues at RWTH Aachen University, and to everyone who contributes to the forum.

I'd like to share an experiment that might be of interest to students studying the altern current.
With a lot of help (I don't know how to program in XML), I managed to get the code to display the brightness variations of light bulbs in Phyphox as a result of being connected to a 50 Hz altern current. The attached screenshot shows the brightness variations and how the time between 10 peaks is 0.10 s, which corresponds to a frequency of 100 Hz, as expected.

I'm using a phototransistor (for example, the TEMT6000) and an ESP32 board that sends data via Bluetooth. I've attached the sketch for the ESP32 and the XML file for uploading to Phyphox.

luz_frecuencia_alta.phyphox (Size: 3.36 KB / Downloads: 46)

Luz_frcuencia_alta_phyphox_pantalla.jpg (Size: 212.71 KB / Downloads: 64)
sketch_luz_frecuencia_alta.zip (Size: 2.11 KB / Downloads: 45)

Camera GUI not allowing full exposure controls

Wed, 11 Feb 2026 21:04:56 +0000

After editing the experiment Camera -> Brightness (Luminance) the camera-GUI in the app only shows the simple controls no matter what value is defined in the parameter "exposureAdjustmentLevel".
When using the original experiment in the same app the full controls are shown.

Example:

Code:

Also the parameter "showControls" seems to have no effect when used.

This is true both for an iPhone11 (app version 1.2.0) and for a phone with android 16 (app version 1.2.0).

What could be the problem with my code (which was generated by the new editor)?

Helligkeit (Leuchtdichte)_0.2Hz.phyphox (Size: 12.35 KB / Downloads: 57)

Is there an Existing Program "Jogger GPS&POLAR"

Wed, 04 Feb 2026 13:06:19 +0000

Hi - I am on the search of a Program for Joggers that records the heart rate from Polar H10 E85C192F and adds the Standort (GPS) data. I guess that this exists? If yes, send me the QR Code? If no, how to realize this? My XML level is poor. I did not find a basic description (for real dummies) on how to realize the first "Program" . Thanks and let us know.

Error in PHYPhox Editor when generating '(In)elastic collision' experiment

Mon, 02 Feb 2026 22:36:30 +0000

I would like to report a possible issue in the phyphox webeditor.
When loading the experiment “(In)elastic collision” in the phyphox webeditor and then selecting “Generate”, the process appears to complete normally. However, when scanning the generated QR code with the phyphox app, the following error message is displayed:
“Line 498: Could not parse buffer with name”.
This behaviour seems to be reproducible and occurs consistently with this specific experiment. Could this be an issue related to the webeditor or to the experiment template itself?
Thank you very much for your support.

Best regards,
Albino Rafael

Recording sound/screen capture while measuring decibel levels

Sun, 01 Feb 2026 17:42:02 +0000

Iphone built in screen recording does not include ambient sound. For now i’ve had to film the phone with another phone next to a audio level meter used to calibrate to provide sound to the readings, this is a hazzle. I would love a feature where the decibel measurement was able to record a sound file simultaneously, or even better; that a screen recording included the sounds measured. Also, in expanded view the graph could show the number reading and calibration status, even in small type.

Thanx

exp_error when combining two premade experiments

Fri, 30 Jan 2026 13:12:15 +0000

hey all,

I'm trying to combine two experiments for a thesis on the block editor, namely "location (GPS)" and "Acceleration without g".

here's the link to the QR code and error message on my Reddit account since im not sure how to post an image here

https://www.reddit.com/u/AnBuachaillEire/s/yba2V08XrT

This is the line of code that's the problem:

Code:

Thanks awfully folks

Encountered a problem about functions and buffers

Wed, 28 Jan 2026 13:41:16 +0000

I am testing the button functionality.ESP32 sends datas to Phyphox continuously, I hope to add a dot to the graph every time I press the button.However,in my phyphox experiment, if I press the button,dots drawn before will be cleared,what's wrong with my experiment?
I'll be thankful if anybody can help me.

Hooke's Law.phyphox (Size: 1.77 KB / Downloads: 70)