New FNIRSI power supply.

[Fungus]

Following on from their new oscilloscope, looks like FNIRSI is making a power supply as well.

https://www.aliexpress.com/item/1005001530484759.html

It's tiny. Looks a bit like one of those mini power supplies that down-to-earth Dave set on fire but in a nicer box and with more goodies.

It has outputs on front and back and the display rotates so you can use it vertically if the footprint is too big. Can be controlled by a PC!

[HKJ]

Can be controlled by a PC!

But only with their software on windows, I did not see any protocol description.

[nctnico]

Following on from their new oscilloscope, looks like FNIRSI is making a power supply as well.

https://www.aliexpress.com/item/1005001530484759.html

It's tiny. Looks a bit like one of those mini power supplies that down-to-earth Dave set on fire but in a nicer box and with more goodies.

It has outputs on front and back and the display rotates so you can use it vertically if the footprint is too big. Can be controlled by a PC!

It is rather expensive compared to a PSU from Gophert or Rek which have the mains power supply build in.

[Fungus]

Can be controlled by a PC!

But only with their software on windows, I did not see any protocol description.

The screenshot shows a serial port:



If that's true then I bet it's not difficult to reverse engineer.

[Fungus]

It is rather expensive compared to a PSU from Gophert or Rek which have the mains power supply build in.

30 Euros is about half the price of a Gophert. You can easily add a switching power supply for the difference, repurpose an old laptop power supply or whatever (depending on what output voltages you need).

Gopherts have a big footprint once you've brought the wires from around the back and plugged in a mains lead.

[HKJ]

The screenshot shows a serial port:

Yes, I can support the interface, but I am missing the protocol.

[Fungus]

The screenshot shows a serial port:

Yes, I can support the interface, but I am missing the protocol.

This is why our oscilloscopes have serial decoders!

Edit: That assumes there will be a serial header inside it somewhere that can be sniffed. If not, you could attach an Arduino and spoof the PC software by pretending to be a PSU while you figure it out.

[HKJ]

Yes, I can support the interface, but I am missing the protocol.

This is why our oscilloscopes have serial decoders!

 
No scope is needed to catch the protocol, but it is much easier if the protocol is documented and then there is no issues with strange checksums.

[Fungus]

No scope is needed to catch the protocol, but it is much easier if the protocol is documented and then there is no issues with strange checksums.

Checksums are easy, all you need is a sample of every possible data packet so you can replay them. 

[nctnico]

It is rather expensive compared to a PSU from Gophert or Rek which have the mains power supply build in.

30 Euros is about half the price of a Gophert. You can easily add a switching power supply for the difference, repurpose an old laptop power supply or whatever (depending on what output voltages you need).

But you'd need to have an old PSU around which then also needs some space. I'm not a fan of needing to hook up 2 seperate boxes to have a power supply. A single solution is much easier. Another problem of lump-in-a-chord / wall-wart / laptop supplies is there is a chance that either the primary side isn't filtered towards ground which leaves half the mains voltage riding on the output voltage OR the negative rail is connected to ground. And if you don't have an extra power supply or the ones you have don't supply the right voltage / current you still need to buy a power supply. In the latter case the price goes up quick.

Gopherts have a big footprint once you've brought the wires from around the back and plugged in a mains lead.

The small (10cm x 16cm) Gophert PSUs have the connections on the front (in the form bindings posts; albeit crappy ones) and they are fanless.

[Fungus]

But you'd need to have an old PSU around which then also needs some space.

Laptop PSU can go on the floor or tape it under a shelf. :-)

The small (10cm x 16cm) Gophert PSUs have the connections on the front (in the form bindings posts; albeit crappy ones).

FNIRSI is 10cm*8cm and it has more features. And you can put it vertical to get 10cm*4cm

[Fungus]

it is much easier if the protocol is documented

We could ask:


(question sent...)

[bianchifan]

MYSKU Blog:
FNIRSI DC-6006L Teardown and rewiew

https://translate.google.com/translate?depth=1&hl=de&rurl=translate.google.com&sl=ru&tl=en&u=https://mysku.ru/blog/aliexpress/83116.html

[Kean]

My FNIRSI DC-6006L arrived last month.  I ordered on AliExpress mid November, so took about 8 weeks to arrive.
I've used it a few times and it works fine, and had a quick look inside, but I haven't had time to run any detailed tests yet.
If there is anything you'd like me to try let me know.

[Kean]

It has outputs on front and back and the display rotates so you can use it vertically if the footprint is too big. Can be controlled by a PC!

The connections on the back are inputs only.  Either DC barrel jack, banana plugs, or USB-C.  Only one can be used at a time.

I've been powering it via either a big USB-C power bank (Tanker Elite) or various USB-C chargers (including my tiny Chargic 60W which just arrived via Kickstarter).

[Fungus]

I ordered one three days ago just for fun. Parcel tracking says it's on the way...

The Whatsapp group hasn't replied. It seems dead, but that might be Chinese new year.

The connections on the back are inputs only.  Either DC barrel jack, banana plugs, or USB-C.  Only one can be used at a time.
I've been powering it via either a big USB-C power bank (Tanker Elite) or various USB-C chargers (including my tiny Chargic 60W which just arrived via Kickstarter).

OK, that's worth knowing. 

USB-C can go up to 20V, 100W. It would be interesting to see how the power supply negotiates that.

[mawyatt]

Nice looking tiny power supply, wonder how it compares with the Riden RD6006, or the new RD6006P? The new P version is apparently a hybrid, with a buck type SMPS followed by a linear LDO.

Interested in how much switching noise is on the output unloaded and loaded of the DC-6006L. Much appreciated if someone could post a scope trace of this.

Best,

[UniSoft]

Nice looking tiny power supply, wonder how it compares with the Riden RD6006, or the new RD6006P? The new P version is apparently a hybrid, with a buck type SMPS followed by a linear LDO.

Interested in how much switching noise is on the output unloaded and loaded of the DC-6006L. Much appreciated if someone could post a scope trace of this.

Best,

There is a review but in Russian language,
https://mysku.ru/blog/aliexpress/83116.html
there author also compares it with RD

[Fungus]

Looks like Dave just got one in his mailbag. Watching now...

Edit: Just a quick peek inside and basic function test. It didn't catch fire!

[Fungus]

it is much easier if the protocol is documented

We could ask:

(question sent...)

I got a reply!

"Our technical director said that this is more sensitive information and cannot be provided"

 

Mine should arrive this week. You can bet I'll be sniffing it.

[Fungus]

It arrived:



(Plus a box with lots of Uni-T tape on it - two new toys in one day!)

[Fungus]

Included accessories: A zippered case (which I'll probably repurpose), a USB cable, five rubber feet (one spare?), a PCB with screw terminals on the top and two big diodes on the bottom for "battery charging", and ... two unknown surface mount components in their tape. 

[HKJ]

two unknown surface mount components in their tape. 

Could be spare fuses.

[Fungus]

two unknown surface mount components in their tape. 

Could be spare fuses.

In tiny SMD?

[HKJ]

two unknown surface mount components in their tape. 

Could be spare fuses.

In tiny SMD?

Yes, check inside the power supply if there are similar parts on the PCB at input or output.