Velleman WFS210 wireless oscilloscope for only £20 !

[Fraser]

I am about to write to VEL337 to see if Velleman are able to release the area of the schematic covering the DC offset that appears at the input connector ground connection.

They obviously need to protect their design from copying now that the firmware has been released, but they may reveal part of the schematic to us for possible modification.

Fraser

[Howardlong]

The nice chap at Velleman (Vel337) has just advised me that they have kindly released the firmware to us 

Here it is.....

https://github.com/Velleman/WFS210-Firmware

Thanks Velleman 

Fraser

First look at a dozen or so files, it looks pretty well written. Tested, maybe not so much. ;-)

While I might have the skills and the tools to help, I lack the time :-(

If the hardware grounding thing wasn’t a “thing” I might be more encouraged, but I fear it’s a fundamental problem: finger in the air suggests they cheaped out on bipolar supplies, i.e, no bipolar supply at all.

[bitseeker]

The nice chap at Velleman (Vel337) has just advised me that they have kindly released the firmware to us 

Here it is..... https://github.com/Velleman/WFS210-Firmware

That's amazing! Posted on Github, no less. Good on ya, Velleman.

Hope you feel better soon, Fraser!

[sorenkir]

I am tempted to test one and use it at my secondary work desk and to give one to my nephew.
Unfortunately Maplin_Outlet does not export.
Anbody from UK willing to order one or two and to send it to me to Germany?
I will cover all costs of course.
Thx

Did you try amazon.co.uk ?
I have bought one from them (£20) with my amazon.fr account and they shipped to France for £4.10.
Michel.

[fremen67]

I am tempted to test one and use it at my secondary work desk and to give one to my nephew.
Unfortunately Maplin_Outlet does not export.
Anbody from UK willing to order one or two and to send it to me to Germany?
I will cover all costs of course.
Thx

You can order it from amazon.co.uk for £20 and have it delivered to Germany for £4.10. Just don't choose Maplin as seller but amazon. I ordered one this way on October 2th and got it delivered today in France. I just checked with a German address and it seems to be accepted to.

[PA0PBZ]

You can order it from amazon.co.uk for £20 and have it delivered to Germany for £4.10. Just don't choose Maplin as seller but amazon. I ordered one this way on October 2th and got it delivered today in France. I just checked with a German address and it seems to be accepted to.

I just did order one that way but they say out of stock with no indication of when it will be back in stock.

[kripton2035]

mine arrived today also in France, ordered from amazon uk seller amazon.

[Pinkus]

Thanks for the hint with Amazon sorenkir and fremen67. I just ordered through Amazon.uk.
oh and: I wish you get well soon Fraser!

[b_force]

"This seller does not deliver to the Netherlands"
So apparently Germany is fine, but not NL 

Amazon is soooo weird sometimes.

[Specmaster]

"This seller does not deliver to the Netherlands"
So apparently Germany is fine, but not NL 

Amazon is soooo weird sometimes.

Try the Dutch Amazon site.

[PA0PBZ]

"This seller does not deliver to the Netherlands"

It worked for me so I guess you picked the wrong seller.

[kripton2035]

you must choose amazon as the seller. the other doesnt export.

[Specmaster]

you must choose amazon as the seller. the other doesnt export.

By this kripton2305 means to make sure that the item is sold by Amazon and not one of their market place sellers, which is precisely what I to would guess is what you did.

[PA0PBZ]

I think this is the correct link: https://www.amazon.co.uk/gp/product/B00MD7VSYK

[b_force]

I think this is the correct link: https://www.amazon.co.uk/gp/product/B00MD7VSYK

No, this is;
https://www.amazon.co.uk/gp/product/B00MD7VSYK/ref=ox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1

Btw, Amazon Netherlands is just sad, they don't have anything or for ridiculous prices.
Most people in NL just go on Amazon.de or Amazon.co.uk

[PA0PBZ]

I think this is the correct link: https://www.amazon.co.uk/gp/product/B00MD7VSYK

No, this is;
https://www.amazon.co.uk/gp/product/B00MD7VSYK/ref=ox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1

I don't see a difference

[b_force]

I think this is the correct link: https://www.amazon.co.uk/gp/product/B00MD7VSYK

No, this is;
https://www.amazon.co.uk/gp/product/B00MD7VSYK/ref=ox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1

I don't see a difference

The difference for me is that I get the same message with your link, that they don't deliver to NL.
(double checked that in a different browser)
Like I said, Amazon works weird sometimes......

[Pinkus]

I think this is the correct link: https://www.amazon.co.uk/gp/product/B00MD7VSYK

No, this is;
https://www.amazon.co.uk/gp/product/B00MD7VSYK/ref=ox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1

I don't see a difference

The difference for me is that I get the same message with your link, that they don't deliver to NL.
(double checked that in a different browser)
Like I said, Amazon works weird sometimes......

Looks like you are in the same situation I was before - before I was told out that Amazonc.uk is shipping this item to Germany.
PM me if I shall order one for you and then send it to the Netherlands. I will do then.

[R_G_B_]

 :So now we have the firmware it should be possible to add a faster ADC.

[Mr. Scram]

:So now we have the firmware it should be possible to add a faster ADC.

Yeah, that suddenly seems very viable. I'm just not quite sure I want to invest in another WFS210 to try it

[Howardlong]

I spent 20 minutes with the firmware sources on my commute home today. It will almost compile on MPLAB X IDE 4.01 and XC16 v1.24. There is a deprecated file dependency, generic.h, which is dropped in recent xc16 versions.

The last bit of the jigsaw is in the final build step where it is looking for bootloader.hex, but it’s not in the sources. I assume this is a USB HID bootloader generated separately. The GUI will not simply let me remove the file from the project, so I’ll have to work a bit more on that.

The bootloader might have been deliberately removed if it had, say, AES encryption keys or similar in it. However as far as I know the only way to update the device is through the programming header inside. Maybe the bootloader just doesn’t work... anyway from the code I’ve examined, I doubt that will be much of a hinderance.

Regrettably I am working all weekend at a customer implementation so I won’t have any opportunity to work on this, but then I wasn’t intending to ever start anyway! It would be good to fix the unreliable wifi at least.

As I mentioned earlier, the code is really quite well laid out and readable. I’m not clear yet why they chose the dspic device they did as I’ve yet to see any use of the DSP. It is one of the very few dspics with a USB phy, but I suspect one of the many pic24 devices with USB would’ve worked just fine too.

[PA0PBZ]

Just got a mail from Amazon UK that my order has been dispatched (was out of stock) and should arrive Wednesday. Total £24.27 / EUR 28.15 so not too bad.

[Specmaster]

"This seller does not deliver to the Netherlands"
So apparently Germany is fine, but not NL 

Amazon is soooo weird sometimes.

Apparently Amazon UK does sell to the Netherlands as this quote will demonstrate, you must have selected a person selling through their "Marketplace" rather than Amazon it self. Why not try again?

Just got a mail from Amazon UK that my order has been dispatched (was out of stock) and should arrive Wednesday. Total £24.27 / EUR 28.15 so not too bad.

[Howardlong]

I should just add that the sources compiled fully once I’d removed the bootloader.hex, but for the IDE to remove it I had to restart the IDE. Lacking time, I’ve not proceeded any further than that.

[Howardlong]

Oh, I meant to mention, while looking through the code on a short train journey on Saturday morning (I reiterate, it’s very readable) it appears to use a comparator (ISTR on chip) and an input compare peripheral for the trigger.