Difference between revisions of "Velleman WFS210"

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<gallery>
<gallery>
[[File:VellemanWFS210-with-display.jpg]]
File:VellemanWFS210-with-display.jpg|<small>WFS210 with Android tablet</small>
[[File:VellemanWFS210-under.jpg]]
File:VellemanWFS210-under.jpg|<small>Screws under feet</small>
[[File:VellemanWFS210-inside.jpg]]
File:VellemanWFS210-inside.jpg|<small>Under cover</small>
[[File:VellemanWFS210-screen.jpg]]
File:VellemanWFS210-screen.jpg|<small>PCB with screen</small>
[[File:VellemanWFS210-battery.jpg]]
File:VellemanWFS210-battery.jpg|<small>Battery and switch</small>
[[File:VellemanWFS210-radio.jpg]]
File:VellemanWFS210-radio.jpg|<small>Wifi radio</small>
[[File:VellemanWFS210-pcb-top.JPG]]
File:VellemanWFS210-pcb-top.JPG|<small>PCB topside</small>
[[File:VellemanWFS210-pcb-bottom.JPG]]
File:VellemanWFS210-pcb-bottom.JPG|<small>PCB underside (no components under foil)</small>
</gallery>
</gallery>



Revision as of 23:55, 31 December 2014

Velleman WFS210 with Nexus 7

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 -vvv output) about the device.

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 :

  • 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, much praise to Velleman for

  • 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

http://www.velleman.eu/downloads/0/information/protocol_wfs210.pdf

Resources

Software :

Manuals :