FSCOPE-500K DIY OSCILLOSCOPE

Combine the FSCOPE-500K with a Raspberry Pi Pico or Pico W* and the Scoppy Android app* to create a 500kS/s oscilloscope.

Simply solder a Pico (or Pico W) to the board together with 0.1" header pins and the supplied trimmer capacitors and you have a 500kS/s oscilloscope.

Features and Specifications

Up to 500kS/s sample rate (250kS/s with both channels enabled)
Maximum analog bandwidth: 150kHz
Record length: 2048 samples per channel in RUN mode, 100kS total for single shot captures
Input Impedance: 1MΩ / 22pF
Maximum Input voltage range: +/- 6V (1X probes)
Coupling: AC/DC
Connectivity: USB, Wi-Fi*
Display Modes: YT, FFT, FFT+YT, X-Y, X-Y+YT
Trigger Types: Rising edge/falling edge
Trigger Modes: Auto/Normal (Run Mode + Single captures)
Cursors: YT and FFT horizontal and vertical cursors
On-screen measurements: Vmin, Vmax, Vpp, Frequency, Period, Duty
Snapshot measurements (screen or sample record): Mean, DC RMS, AC RMS
Export data format: CSV
Access to all pins of the Raspberry Pi Pico
Signals can be input via 0.1” header pins or BNC connectors*
Signal generator - square wave up to 1.25MHz, sine wave - 1kHz
AC and DC coupling of the input signals
Indicator LEDs: Status, Wi-Fi and Trigger
FFT Window functions: Hann, Hamming, Blackman, Rectangle
FFT Vertical units: dBm, dBmV, V
Logic Analyser: 25MS/s (requires soldering extra headers to the board - not supplied). No protocol decoding as yet.
See the Scoppy project on GitHub for the features of the Scoppy oscilloscope firmware and Android app

More Information

FSCOPE-500K assembly instructions

What You'll Need

An Android device that's running Android version 6.0 (Marshmallow) or higher. The device must also support USB OTG (On-The-Go) - most modern phones/tablets do. If you are able to install the Scoppy app from the Play Store then (Google thinks) it does support USB OTG.
A compatible OTG cable/adapter (not supplied). Even if you are planning to use Wi-Fi, we recommend having a compatible OTG (On-The-Go) cable so you can access the firmware settings in the event you can't connect via Wi-Fi (eg. if your Wi-Fi password changes or the Wi-Fi settings in the firmware were entered incorrectly). The OTG adapter plugs into the USB port of your Android device.

Please Note

Raspberry Pi Pico (or Pico W), Android device, header pins, BNC connectors and scope probes are NOT included
Use of the second channel requires the premium version of the Scoppy Android app (approx US$2 in-app purchase)
Wi-Fi functionality is only available with a Raspberry Pi Pico W (ie. not a Pico)
Some assembly required