<![CDATA[phyphox Forums - Experiments and Ideas]]> https://phyphox.org/forums/ Fri, 01 May 2026 22:19:49 +0000 MyBB <![CDATA[Light Frequency with ESP32 and Phyphox]]> https://phyphox.org/forums/showthread.php?tid=2239 Fri, 27 Feb 2026 16:28:11 +0000 Explliure]]> https://phyphox.org/forums/showthread.php?tid=2239 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.

.phyphox   luz_frecuencia_alta.phyphox (Size: 3.36 KB / Downloads: 36)
 
.jpg   Luz_frcuencia_alta_phyphox_pantalla.jpg (Size: 212.71 KB / Downloads: 49)
.zip   sketch_luz_frecuencia_alta.zip (Size: 2.11 KB / Downloads: 34)
]]> 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.

.phyphox   luz_frecuencia_alta.phyphox (Size: 3.36 KB / Downloads: 36)
 
.jpg   Luz_frcuencia_alta_phyphox_pantalla.jpg (Size: 212.71 KB / Downloads: 49)
.zip   sketch_luz_frecuencia_alta.zip (Size: 2.11 KB / Downloads: 34)
]]> <![CDATA[Is there an Existing Program "Jogger GPS&POLAR"]]> https://phyphox.org/forums/showthread.php?tid=2236 Wed, 04 Feb 2026 13:06:19 +0000 Gribor]]> https://phyphox.org/forums/showthread.php?tid=2236 . Thanks and let us know.]]> . Thanks and let us know.]]> <![CDATA[Recording sound/screen capture while measuring decibel levels]]> https://phyphox.org/forums/showthread.php?tid=2233 Sun, 01 Feb 2026 17:42:02 +0000 Further]]> https://phyphox.org/forums/showthread.php?tid=2233
Thanx]]>
Thanx]]> <![CDATA[Heart rate monitor]]> https://phyphox.org/forums/showthread.php?tid=2224 Thu, 08 Jan 2026 15:12:54 +0000 dirkmayer]]> https://phyphox.org/forums/showthread.php?tid=2224
I was wondering whether the newly integrated camera based sensors could be of use to improvise a heart rate monitor (similar to the google fit app). 

Is there a means to set up a custom experiment using the camera? Currently I can't find it in the list of sensors when designing a simple experiment. 

This would enable a data fusion of sensors, e.g. the IMU, to enhance the quality of the results.

Cheers,

Dirk]]>
I was wondering whether the newly integrated camera based sensors could be of use to improvise a heart rate monitor (similar to the google fit app). 

Is there a means to set up a custom experiment using the camera? Currently I can't find it in the list of sensors when designing a simple experiment. 

This would enable a data fusion of sensors, e.g. the IMU, to enhance the quality of the results.

Cheers,

Dirk]]> <![CDATA[Optical tachometer?]]> https://phyphox.org/forums/showthread.php?tid=2216 Fri, 12 Dec 2025 23:20:52 +0000 Lathechuck]]> https://phyphox.org/forums/showthread.php?tid=2216 <![CDATA[Floor navigation]]> https://phyphox.org/forums/showthread.php?tid=2205 Tue, 02 Dec 2025 19:11:17 +0000 NES088]]> https://phyphox.org/forums/showthread.php?tid=2205 <![CDATA[I’ve noticed that your resources only list experiments for junior high school.]]> https://phyphox.org/forums/showthread.php?tid=2204 Sat, 29 Nov 2025 08:46:39 +0000 zzzz]]> https://phyphox.org/forums/showthread.php?tid=2204 Resources Pool – phyphox 资源池 - phyphox]]> Resources Pool – phyphox 资源池 - phyphox]]> <![CDATA[I was wondering if it’s possible to successfully port your phyphox BLE code to the Ke]]> https://phyphox.org/forums/showthread.php?tid=2193 Wed, 29 Oct 2025 22:55:16 +0000 zzzz]]> https://phyphox.org/forums/showthread.php?tid=2193 <![CDATA[The experiment generated by the phyphox editor fails to download to the app.]]> https://phyphox.org/forums/showthread.php?tid=2185 Tue, 07 Oct 2025 00:37:41 +0000 zzzz]]> https://phyphox.org/forums/showthread.php?tid=2185 <![CDATA[Inclination tool - Option to display in Percent rather than degree]]> https://phyphox.org/forums/showthread.php?tid=2172 Sun, 27 Jul 2025 20:24:51 +0000 B. Douille]]> https://phyphox.org/forums/showthread.php?tid=2172
In some cases people used to use percentage of a slope rather than degree. Unfortunately, the Inclination experiment only offer a live display in degree. 
An inclination in % is equivalent to a deviation of x meter in vertical / y meter in horizontal. For example, 45° is 100%. So far the workaround is to export in a spreadsheet and convert each values using formula =TAN(RADIANS(B2)) but it's not real-time. 

.png   Capture d'écran 2025-07-27 221829.png (Size: 58.62 KB / Downloads: 272)

An option in the experiment would be helpful. Thanks in advance.]]>
In some cases people used to use percentage of a slope rather than degree. Unfortunately, the Inclination experiment only offer a live display in degree. 
An inclination in % is equivalent to a deviation of x meter in vertical / y meter in horizontal. For example, 45° is 100%. So far the workaround is to export in a spreadsheet and convert each values using formula =TAN(RADIANS(B2)) but it's not real-time. 

.png   Capture d'écran 2025-07-27 221829.png (Size: 58.62 KB / Downloads: 272)

An option in the experiment would be helpful. Thanks in advance.]]> <![CDATA[Bringing Phyphox to VR/AR Platforms]]> https://phyphox.org/forums/showthread.php?tid=2158 Wed, 25 Jun 2025 13:18:52 +0000 Bingkun]]> https://phyphox.org/forums/showthread.php?tid=2158
I'm reaching out to ask if you have considered to bring this amazing app to VR platforms such as Apple Vision Pro. I have tried to install it on Vision Pro and it is possible, because Vision OS is based on iPad OS, and the apps that running on the iPad OS and also run on Vision OS. However, Access to most types of data are not available. And I have found that the APIs in Vision OS is not completely same as iPad OS.

Is this something already being explored? Or are there any technical or design challenges holding back such a migration?

Looking forward to hearing your thoughts!]]>
I'm reaching out to ask if you have considered to bring this amazing app to VR platforms such as Apple Vision Pro. I have tried to install it on Vision Pro and it is possible, because Vision OS is based on iPad OS, and the apps that running on the iPad OS and also run on Vision OS. However, Access to most types of data are not available. And I have found that the APIs in Vision OS is not completely same as iPad OS.

Is this something already being explored? Or are there any technical or design challenges holding back such a migration?

Looking forward to hearing your thoughts!]]> <![CDATA[Accelerator Experiment Help]]> https://phyphox.org/forums/showthread.php?tid=2149 Wed, 28 May 2025 21:13:42 +0000 Jess2]]> https://phyphox.org/forums/showthread.php?tid=2149
I discovered this app because of the accelerator feature. Which shows accurate spikes from each hammer strike, however does not count them.

I am wondering if someone who is a frequent user of the app (and much smarter) could perhaps create the experiment I am looking for?]]>
I discovered this app because of the accelerator feature. Which shows accurate spikes from each hammer strike, however does not count them.

I am wondering if someone who is a frequent user of the app (and much smarter) could perhaps create the experiment I am looking for?]]> <![CDATA[Collaborative experiment: Magnetic inclination and declination.]]> https://phyphox.org/forums/showthread.php?tid=2143 Thu, 08 May 2025 09:06:12 +0000 jonas.persson]]> https://phyphox.org/forums/showthread.php?tid=2143 However, the problem may be rephrased so that you use the sun and find the inclination and declination, as you need the time and the sun's position in the sky, similar to the Suntrace project using phyphox. 
So, using a straw or the shadow, and align the phone with the sun, then send the position and time(UTC) to a server together with the readout of the magnetometer and it will be possible to calculate the inclination/declination, from the sun's position in the sky (calculated), post it on the server and send the result to the user in phyphox. In this way, it will be possible to build a map of variations and give users local values.

On paper, this seems doable, but I might have missed some issues. Is this possible, and is it worth doing, and who would be interested in collaborating?

There exists a project mapping the horizontal and vertical magnetic components (https://www.ncei.noaa.gov/products/crowd...netic-data), but as far as I know, nothing on the inclination and declination.]]> However, the problem may be rephrased so that you use the sun and find the inclination and declination, as you need the time and the sun's position in the sky, similar to the Suntrace project using phyphox. 
So, using a straw or the shadow, and align the phone with the sun, then send the position and time(UTC) to a server together with the readout of the magnetometer and it will be possible to calculate the inclination/declination, from the sun's position in the sky (calculated), post it on the server and send the result to the user in phyphox. In this way, it will be possible to build a map of variations and give users local values.

On paper, this seems doable, but I might have missed some issues. Is this possible, and is it worth doing, and who would be interested in collaborating?

There exists a project mapping the horizontal and vertical magnetic components (https://www.ncei.noaa.gov/products/crowd...netic-data), but as far as I know, nothing on the inclination and declination.]]> <![CDATA[Send data to server]]> https://phyphox.org/forums/showthread.php?tid=2132 Thu, 24 Apr 2025 12:01:49 +0000 jonas.persson]]> https://phyphox.org/forums/showthread.php?tid=2132 Is there an easy way to send this data directly to the server without going through a mail program, or for example, Google Drive?]]> Is there an easy way to send this data directly to the server without going through a mail program, or for example, Google Drive?]]> <![CDATA[Programming a recurring experiment?]]> https://phyphox.org/forums/showthread.php?tid=2130 Fri, 18 Apr 2025 13:47:51 +0000 viechdokter]]> https://phyphox.org/forums/showthread.php?tid=2130
I wonder if it is possible to program Phyphox to automatically do the same experiment each day from say, 8 to 9 o'clock?]]>
I wonder if it is possible to program Phyphox to automatically do the same experiment each day from say, 8 to 9 o'clock?]]>