phyphox Forums - General

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

"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.

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

How to convert rotation rate v/s time graph (gyroscope) to displacement v/s time?

Thu, 21 Nov 2024 04:22:27 +0000

I'm working on a bifilar pendulum's damping, and I have taken 60+ readings with the Phyphox gyroscope just to realise that it measures rad/s v/s time and not rad v/s time which is what I need to calculate for damping. Is there any way I can use all this data in CSV to convert it to displacement v/s time?

Sending data back to the input bluetooth device

Tue, 01 Oct 2024 15:59:57 +0000

Is it possible to send data back to the input device? I tried adding an output device to the experiment but the app asks for another connection.

I am specifically looking for sending configuration data that can be changed dynamically through input fields, and not hardcoded in the experiment, like config tag does

Merging multiple measurements sent as a single value

Wed, 21 Aug 2024 18:07:40 +0000

I am trying to increase data throughput over Bluetooth, one of my ideas was to pack multiple measurements and send them together, utilizing the whole MTU.

From what I found, you can append buffers, but I would need to interleave them instead, alternating between all the outputs from Bluetooth input.
Is there a way to unpack this data and serialize it to a buffer?

Arduino - phyphox connection

Tue, 04 Jun 2024 12:32:00 +0000

I want to make an experiment with two buttons. When each one is pressed it will send a different integer via bluetooth, to the Arduino. I can't figure out how to combine the two buttons so that only the value of the last one pressed is sent. I'm trying to do using the editor because I'm not familiar with xml. Can you help me?

The formula of deecibel calibration

Fri, 26 Jan 2024 08:51:49 +0000

I did some experiments about Audio Amplitude , but I have three question about calibration.

Questions

What is "Calibration offset"?
What is the formula of "Calibration offset"?
What is the formula of Refebrence SPL , and how is it calibrated from the original value?

If you know something about these question , send posts here , please.

PHYPHOX TO

Sun, 21 Jan 2024 10:01:27 +0000

Hello, I am currently working on a personal project. However, I need to send the data collected by phyphox to Python. I modeled the following program based on the depth sensor (lidar) category, but in the Python console, it gets stuck at d=0.2m. I want to obtain the real-time distance from my phone to the object in Python. THANK YOU! Here's my code (PS: I'm hiding my IP):

PP_ADDRESS = "XXXXXXX"
PP_CHANNELS = ["d"]

import requests
import time

while True:
try:
url = PP_ADDRESS + "/get?" + ("&".join(PP_CHANNELS))
data = requests.get(url=url).json()
for i, control in enumerate(PP_CHANNELS):
value = data["buffer"][PP_CHANNELS[i]]["buffer"][0]
print("Channel " + str(control) + " = " + str(value))
except Exception as e:
print("An error occurred:", e)
time.sleep(1)

Send textual input from phyphox to Arduino

Thu, 11 Jan 2024 15:10:06 +0000

In the getDataFromSmartphone example sketch, the user can send a time interval from phyphox to Arduino. Is it possible to also send text (i.e. char) instead of a number via BLE?

Additional question: can one send multiple user entries or is this limited to one input?

Light sensor experiment shows too high of a value

Thu, 19 Oct 2023 23:13:46 +0000

So I was playing around with the light sensor experiment by shining my phones lux meter with a flashlight. The value at its best was a little over a million lux, which is to be expected at very short distances. The problem is that my phones lux sensor is only rated to 60000lux, evident by the apps device info tab and the manufacturers datasheet. The question is, how can it display higher values than what the sensor is rated for?

My phone is a Samsung galaxy S10e, SM-G970F
The lux sensor in it is a: TCS3407

Website revamp

Mon, 14 Aug 2023 20:07:43 +0000

We plan to reorganize our website https://phyphox.org so that it better suits your needs and you actually find things.
I would like to gather some feedback from your side – perhaps carrying your educator's hat as well as your students' hat and others that are not yet targeted. These items might give you some orientation:

Your/their expectations and Wishes for the phyphox website
What do you/they need from the website?
Why do you/they visit the website, what are you/they looking for?
What are the most important pages on the website?
Where do you expect help?
What information needs to be added or extended?
What keeps you away from the current website … or would attract you?

I am looking forward to your replies in this thread.

Question regarding Data collection/Live Experiments

Mon, 07 Aug 2023 12:54:14 +0000

Hello
I am Currently in my last phase of teacher training and have to present a teaching unit with something "novel" as a part of that.
I'm trying to do Student experiments and collect all results to display, discuss and analyse together on my Laptop, and it seems like phyphox could be able to help me.

What is the most elegant way to do this? Its mostly experiments already implemented in phyphox if that helps.

From what I've been able to gather by now, its either possible by creating my own "live-experiment" including network connections like detailed here, distributing that to the different devices and then doing the data collection and representation on some server Ive set up, or working with remote control. I have some experience programming, but noting regarding networks so far, so I'm not sure how time consuming the first way would be.

Is phyphox a good tool for this or should I look for different solutions? My School has Cassy and LabQuest sets, but I haven't been able to get it to work with those yet.

Thanks for your time and the great App!

get consulting help?

Mon, 03 Jul 2023 22:41:50 +0000

Hello moderator,

Please excuse me if it's not appropriate to ask this question. I'm not a programmer, but I hope to find a student who is experienced with the Phyphox app and would be interested in a small project as a paid intern. I worked with many college students over the last 20 years as a mentor and teach an Innovation Workshop at (SJSU)San Jose State University here in Silicon Valley. See attachment.

I've not been able to find anyone who has experience with Phyphox. I'd appreciate hearing from anyone who might be interested or knows someone who might be interested

Dave Hadden
dave@inciona.com