Difference between revisions of "Velleman WFS210"

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[[File:VellemanWFS210.png|thumb|right|Velleman WFS210 with Nexus 7]]
[[File:VellemanWFS210.png|thumb|right|Velleman WFS210]]


The [http://www.velleman.eu/products/view/?id=416586 Velleman WFS210] is a claimed to be the first WiFi oscilloscope. It has 2 channels, and 10MS/s sampling rate per channel.
The [http://www.velleman.eu/products/view/?id=416586 Velleman WFS210] is a claimed to be the first WiFi oscilloscope. It has 2 channels, and 10MS/s sampling rate per channel.
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== Description ==
== Description ==


I saw this first in Maplin (UK electronics chain) priced at about £180. It seemed a lot for a 2-channel, 8 bit, 1MHz oscilloscope shipped without probes or charger, but it has some unusual features :


* 2 channel 8 bit 10MS/s
* Wifi & internal battery for self-contained remote connection to a tablet or PC
* Wifi & internal battery for self-contained remote connection to a tablet or PC
* Charges off USB (mini plug)
* Charges off USB (mini plug)
* Supported on IOS, Android 4, Windows
* Supported on IOS, Android 4, Windows


And, much praise to Velleman for
And, notably :


* Sources for Android build on github
* Sources for Android build on github
* Protocol description on manufacturers site
* Protocol description on manufacturers site
I had a need to monitor the signals on [http://www.tomwilkinson.com/recent.html a friend's] [http://ow.ly/i/274Pk rotating machinery], so when I saw a brand new example of this on an auction site for 1/4 the listed price, I snapped it up.
Taking it apart, I broke it: the power button really needs to be removed first / fitted last, levering the board out without removing the button damaged the switch. A wire link fixes it for now. Beware!


== Hardware ==
== Hardware ==
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** [http://www.velleman.eu/downloads/0/user/getting_started_wfs210.pdf Quickstart manual]
** [http://www.velleman.eu/downloads/0/user/getting_started_wfs210.pdf Quickstart manual]
** [http://www.velleman.eu/downloads/0/user/usermanual_wfs210.pdf User manual]
** [http://www.velleman.eu/downloads/0/user/usermanual_wfs210.pdf User manual]
==Note==
When taking it apart, I broke it: the power button really needs to be removed first / fitted last. Levering the board out without removing the button damaged the switch. A wire link fixes it for now. Beware!


[[Category:Device]]
[[Category:Device]]
[[Category:Oscilloscope]]
[[Category:Oscilloscope]]
[[Category:In progress]]
[[Category:In progress]]

Revision as of 03:26, 2 January 2015

Velleman WFS210

The Velleman WFS210 is a claimed to be the first WiFi oscilloscope. It has 2 channels, and 10MS/s sampling rate per channel.

See Velleman WFS210/Info for more details (such as lsusb -v output) about the device.

Description

  • 2 channel 8 bit 10MS/s
  • Wifi & internal battery for self-contained remote connection to a tablet or PC
  • Charges off USB (mini plug)
  • Supported on IOS, Android 4, Windows

And, notably :

  • Sources for Android build on github
  • Protocol description on manufacturers site

Hardware

Control logic

USB interface

  • Onboard the dsPic

Wifi interface

  • Roving Networks (Microchip) RN171-I/RM

Analog frontend

  • 6 x EGE EDR301A0528 reed relays (3 per input channel)
  • 6 x variable capacitors (3 per channel)
  • 4 x variable resistors (2 per channel)
  • 2 x Texas Instruments OPA354 op-amps
  • 1 x Microchip 6404E quad op-amp
  • 1 x Maxim 1192E 8-bit 22MSPS dual A/D converter

Power

  • 1 x 3.7V 1.8Ah lithium battery
  • 1 x 7387 lithium pack charge controller
  • 1 x TJ 42MD7LE regulator

?

  • 8-pin pack marked 'NXC' near TI opamps

Photos

Protocol

The protocol is publically documented by the vendor.

(oddly, the protocol is described in terms of frames such as <STX> ... <ETX> as though on a serial stream. It doesn't mention TCP ports or USB endpoints)

Resources

Note

When taking it apart, I broke it: the power button really needs to be removed first / fitted last. Levering the board out without removing the button damaged the switch. A wire link fixes it for now. Beware!