https://github.com/anfractuosity/flipperscope

Attempt at an oscilloscope application for the flipper zero. Measures voltage and frequency.
https://github.com/anfractuosity/flipperscope

adc dma flipper-zero flipperscope flipperzero oscilloscope scope

Last synced: 10 months ago
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Attempt at an oscilloscope application for the flipper zero. Measures voltage and frequency.

• Host: GitHub
• URL: https://github.com/anfractuosity/flipperscope
• Owner: anfractuosity
• Created: 2023-01-15T16:14:42.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2025-01-03T15:38:13.000Z (about 1 year ago)
• Last Synced: 2025-03-29T14:07:02.749Z (11 months ago)
• Topics: adc, dma, flipper-zero, flipperscope, flipperzero, oscilloscope, scope
• Language: C
• Homepage:
• Size: 1.83 MB
• Stars: 149
• Watchers: 8
• Forks: 3
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml

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README

          
# flipperscope

To compile and install

```

cd flipperzero-firmware/applications_user

git clone https://github.com/anfractuosity/flipperscope.git

cd ..

./fbt DEBUG=1 VERBOSE=1 fap_scope

./fbt launch_app APPSRC=applications_user/flipperscope

```

Alternatively the binary can now be installed from https://lab.flipper.net/apps/flipperscope or the Flipper Mobile App.

Provide signal to **pin 16/PC0**, with a voltage ranging from 0V to 2.5V and ground to **pin 18/GND**.

Press the 'ok' button (button in the centre of joypad) to pause/unpause the waveform display.

[Demo](https://www.youtube.com/watch?v=tu2X1WwADF4) showing three different waveform types from a signal generator.

Also see [Derek Jamison's demonstration](https://www.youtube.com/watch?v=iC5fBGwCPHw&t=374s) of this app as well as other interesting projects.

## Measurements

* Measures frequency of waveform in hertz

* Measures voltage: min, max, Vpp

* FFT option provides simple spectrum analyser

![Signal Generator](photos/sig.jpg)

![Flipper Zero running flipperscope](photos/freq.jpg)

![Rigol](photos/rigol.jpg)

![Flipper Zero running flipperscope - showing voltage measurements](photos/volt.jpg)

In the following photo attached a MAX9814 electret microphone module to the flipper zero and used the spectrum

analyser functionality, with an FFT window size of 1024 and played a 3kHz sine wave tone from a computer.

![Flipper Zero running flipperscope - showing spectrum analyser](photos/fft.jpg)

## Processing captures

You can use the following simple Python script, for processing the captured waveforms, from flipperscope.

```

import matplotlib.pyplot as plt

import numpy as np

import struct

fig, ax = plt.subplots()

data = open("Sine.dat", "rb").read()

y = [(float(x[0]) / 2500) * 2.5 for x in struct.iter_unpack("