New FNIRSI power supply. - Page 1
Forum section: electronics / testgear

author: Fungus
author_rank: Super Contributor
timestamp: February 15, 2021, 01:37:39 pm
content: Following on from theirnew oscilloscope, looks like FNIRSI is making a power supply as well.https://www.aliexpress.com/item/1005001530484759.htmlIt's tiny. Looks a bit like one of those mini power supplies that down-to-earth Daveset on firebut 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!

author: HKJ
author_rank: Super Contributor
timestamp: February 15, 2021, 01:59:15 pm
content: Quote from: Fungus on February 15, 2021, 01:37:39 pmBut only with their software on windows, I did not see any protocol description.

author: nctnico
author_rank: Super Contributor
timestamp: February 15, 2021, 02:02:56 pm
content: Quote from: Fungus on February 15, 2021, 01:37:39 pmIt is rather expensive compared to a PSU from Gophert or Rek which have the mains power supply build in.

author: Fungus
author_rank: Super Contributor
timestamp: February 15, 2021, 02:13:55 pm
content: Quote from: HKJ on February 15, 2021, 01:59:15 pmThe screenshot shows a serial port:If that's true then I bet it's not difficult to reverse engineer.

author: Fungus
author_rank: Super Contributor
timestamp: February 15, 2021, 02:21:07 pm
content: Quote from: nctnico on February 15, 2021, 02:02:56 pm30 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.

author: HKJ
author_rank: Super Contributor
timestamp: February 15, 2021, 02:23:52 pm
content: Quote from: Fungus on February 15, 2021, 02:13:55 pmYes, I can support the interface, but I am missing the protocol.

author: Fungus
author_rank: Super Contributor
timestamp: February 15, 2021, 02:27:43 pm
content: Quote from: HKJ on February 15, 2021, 02:23:52 pmThis 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.

author: HKJ
author_rank: Super Contributor
timestamp: February 15, 2021, 02:31:04 pm
content: Quote from: Fungus on February 15, 2021, 02:27:43 pmNo 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.

author: Fungus
author_rank: Super Contributor
timestamp: February 15, 2021, 02:37:06 pm
content: Quote from: HKJ on February 15, 2021, 02:31:04 pmChecksums are easy, all you need is a sample of every possible data packet so you can replay them.

author: nctnico
author_rank: Super Contributor
timestamp: February 15, 2021, 03:05:39 pm
content: Quote from: Fungus on February 15, 2021, 02:21:07 pmBut 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.QuoteThe small (10cm x 16cm) Gophert PSUs have the connections on the front (in the form bindings posts; albeit crappy ones) and they are fanless.

author: Fungus
author_rank: Super Contributor
timestamp: February 15, 2021, 03:10:25 pm
content: Quote from: nctnico on February 15, 2021, 03:05:39 pmLaptop PSU can go on the floor or tape it under a shelf. :-)Quote from: nctnico on February 15, 2021, 03:05:39 pmFNIRSI is 10cm*8cm and it has more features. And you can put it vertical to get 10cm*4cm

author: Fungus
author_rank: Super Contributor
timestamp: February 15, 2021, 03:10:56 pm
content: Quote from: HKJ on February 15, 2021, 02:31:04 pmWe could ask:(question sent...)

author: bianchifan
author_rank: Regular Contributor
timestamp: February 15, 2021, 07:25:54 pm
content: MYSKU Blog:FNIRSI DC-6006L Teardown and rewiewhttps://translate.google.com/translate?depth=1&hl=de&rurl=translate.google.com&sl=ru&tl=en&u=https://mysku.ru/blog/aliexpress/83116.html

author: Kean
author_rank: Unknown
timestamp: February 17, 2021, 12:09:33 pm
content: 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.

author: Kean
author_rank: Unknown
timestamp: February 17, 2021, 12:20:02 pm
content: Quote from: Fungus on February 15, 2021, 01:37:39 pmThe 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).

author: Fungus
author_rank: Super Contributor
timestamp: February 17, 2021, 12:23:15 pm
content: 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.Quote from: Kean on February 17, 2021, 12:20:02 pmOK, that's worth knowing.USB-C can go up to 20V, 100W. It would be interesting to see how the power supply negotiates that.

author: mawyatt
author_rank: Super Contributor
timestamp: February 17, 2021, 01:43:18 pm
content: 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,

author: UniSoft
author_rank: Frequent Contributor
timestamp: February 17, 2021, 03:25:52 pm
content: Quote from: mawyatt on February 17, 2021, 01:43:18 pmThere is a review but in Russian language,https://mysku.ru/blog/aliexpress/83116.htmlthere author also compares it with RD

author: Fungus
author_rank: Super Contributor
timestamp: February 18, 2021, 11:28:59 am
content: Looks like Dave just got one in his mailbag. Watching now...Edit: Just a quick peek inside and basic function test. Itdidn'tcatch fire!

author: Fungus
author_rank: Super Contributor
timestamp: February 21, 2021, 11:01:27 am
content: Quote from: Fungus on February 15, 2021, 03:10:56 pmI 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.

author: Fungus
author_rank: Super Contributor
timestamp: February 23, 2021, 01:40:53 pm
content: It arrived:(Plus a box with lots of Uni-T tape on it - two new toys in one day!)

author: Fungus
author_rank: Super Contributor
timestamp: February 23, 2021, 03:26:37 pm
content: 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.

author: HKJ
author_rank: Super Contributor
timestamp: February 23, 2021, 03:38:20 pm
content: Quote from: Fungus on February 23, 2021, 03:26:37 pmCould be spare fuses.

author: Fungus
author_rank: Super Contributor
timestamp: February 23, 2021, 03:41:09 pm
content: Quote from: HKJ on February 23, 2021, 03:38:20 pmIn tiny SMD?

author: HKJ
author_rank: Super Contributor
timestamp: February 23, 2021, 03:44:16 pm
content: Quote from: Fungus on February 23, 2021, 03:41:09 pmYes, check inside the power supply if there are similar parts on the PCB at input or output.

author: mawyatt
author_rank: Super Contributor
timestamp: February 23, 2021, 03:47:40 pm
content: Measure the resistance of the SMD, if it's very low then likely fuses.The case looks like the same case that the NanoVNA SAA-2N comes with, handy nice little hard shell case.Best

author: Fungus
author_rank: Super Contributor
timestamp: February 23, 2021, 04:13:11 pm
content: Quote from: HKJ on February 23, 2021, 03:44:16 pmI dunno. That doesn't seem very user friendly.Quick first inspection: I manages to get 19.95V out of my Xiaomi phone's charger. It seems to work. The user interface is bad, the beep on every button press or knob click will have to go.There's a CH340 (USB-to-serial) chip right where the USB connector is on the PCB. That must be the communication interface. There's a four pin header right next to it but it isn't labelled like a serial port. Looks more like I2C.

author: Kean
author_rank: Unknown
timestamp: February 23, 2021, 04:15:54 pm
content: Quote from: Fungus on February 23, 2021, 03:26:37 pmMost likely replacement fuses. I don't recall seeing these in my package, probably missed them being so small. Iprobablydon't have similar rated ones in stock.See the green output fuse F1 hiding under the sense resistor in attached photo inside my unit.

author: Fungus
author_rank: Super Contributor
timestamp: February 23, 2021, 04:24:49 pm
content: Quote from: Kean on February 23, 2021, 04:15:54 pmI put my little tape package next to that and it looks like you're right!

author: Fungus
author_rank: Super Contributor
timestamp: February 23, 2021, 05:18:08 pm
content: Quote from: mawyatt on February 23, 2021, 03:47:40 pmYep, the case is nice. You can remove just the top set of screws and the top half lifts off for easy access.

author: mawyatt
author_rank: Super Contributor
timestamp: February 23, 2021, 06:26:41 pm
content: Quote from: Fungus on February 23, 2021, 05:18:08 pmSorry, I meant the carrying case not the actual PS case. The PS case looks like an extruded Al case with PCB end covers.Best,

author: Fungus
author_rank: Super Contributor
timestamp: February 23, 2021, 06:56:25 pm
content: Quote from: mawyatt on February 23, 2021, 06:26:41 pmBoth. Both are nice.

author: Fungus
author_rank: Super Contributor
timestamp: February 27, 2021, 09:34:54 am
content: I just tried this power supply with my Xiaomi power bank. I was thinking "Portable power supply!".It powers on OK, but ... it failed to negotiate more than 5V input from the power bank which means only 4.1V output into a load.I know my power bank can do more than that but not with the FNIRSI. Maybe it would work if you find the right one.

author: HKJ
author_rank: Super Contributor
timestamp: February 27, 2021, 11:40:21 am
content: Quote from: Fungus on February 27, 2021, 09:34:54 amThe FNIRSI uses USB-C PD, this means you must use a USB-C cable and cannot have any old style USB connection involved as they do not support more than 5V (Except with non USB approved protocols like QC).

author: Fungus
author_rank: Super Contributor
timestamp: February 27, 2021, 11:47:18 am
content: Quote from: HKJ on February 27, 2021, 11:40:21 amI know, I've been powering it using a phone charger. It negotiates 20V from the charger and works just fine.My phone charges at much more than 5V if I plug my phone into that power bank but the FNIRSI doesn't like it.

author: Fungus
author_rank: Super Contributor
timestamp: February 27, 2021, 08:54:29 pm
content: I was just throwing thous out there. If you need a portable power supply then this thing could work nicely if you find a power bank with better support for USB C power delivery.

author: jice
author_rank: Newbie
timestamp: November 29, 2021, 08:43:37 am
content: Here is the hacked protocol:https://github.com/jcheger/fnirsi-dc580-protocol

author: tai
author_rank: Contributor
timestamp: December 07, 2021, 07:21:20 am
content: Great! I tested the serial port on my new FNIRSI DC-6006L power supply, and can confirm that it also follows the same protocol except that it first responds with "KB" instead of "MB". Other than that, it seems the protocol is compatible.

author: tai
author_rank: Contributor
timestamp: December 09, 2021, 01:52:20 pm
content: Based on the work for DC-580, I wrote a CLI tool to control similar model, DC6006L.https://github.com/tai/dc6006l/I can't comment on DC-580, but serial port output from DC6006L is a mess as its output format is a mixture of different frames that are quite identical and don't give much information on what it contains. It's also not compatible with DC-580. So far, it works for me, but your milage may vary.

author: Chance92
author_rank: Regular Contributor
timestamp: December 27, 2021, 04:59:03 pm
content: Quote from: mawyatt on February 17, 2021, 01:43:18 pmI only have a 10MHz scope and a 20V PD charger. For what it's worth:Test setup:Two x1 probes with 50Ohm termination into Pico 2204A. Power supply connected to two 6Ohm resistor in parallel.Measurement at 18V no-load:Measurement at 17.22V 5.57A:

author: ivi_yak
author_rank: Regular Contributor
timestamp: December 13, 2022, 07:47:57 pm
content: Fnirsi, is a piece of crap, guys it has no protection from the voltage flowing in on input, and once it's off, it'll go to a short inputmy item is dead for now if someone has FW pls share

author: Jagiro84
author_rank: Newbie
timestamp: December 14, 2023, 08:47:23 am
content: Quote from: Fungus on February 15, 2021, 02:13:55 pmI have this unit and I had to replace the stm chip, a firmware is nowhere to be found, are u able to extract the firmware from the chip ? Or anyone else reading this and having this same psu unit fniris dc6006l

author: stepmuel
author_rank: Newbie
timestamp: June 20, 2024, 10:16:07 pm
content: I am in the process of writing a nice little Android app to control my FNIRSI DC6006L based onhttps://github.com/jcheger/fnirsi-dc580-protocol, but the serial data the device is sending has suddenly become very weird. It is mostly sending parts from previous messages again together with the updated data. Sometimes the data becomes longer and longer (by including the previous message) until it resets. And sometimes the first part of a message is skipped.Not sure how that might be possible, but I think I might have somehow corrupted the parameter memory by sending unexpected data? It could have been accidentally setting negative voltage, or sending new voltage values too quickly. The serial port worked fine when I started developing, and I haven't connected any loads since then.Unplugging the device doesn't fix it, and there doesn't appear to be a way to restore factory settings. Apart from sending data over serial, everything works fine.I wanted to try updating the firmware, but I have neither the windows app, nor the firmware binary to upload. They can no longer be found on the FNIRSI website.Does anyone still have those files and could send them to me? Or does anyone have other ideas how to fix my issue?I am very sad about having broken my power supply, since I like it a lot and there doesn't seem to be a comparable alternative since it has been discontinued.

author: careyer
author_rank: Contributor
timestamp: July 31, 2025, 01:33:09 pm
content: Hey there!can anyone be kind enough to share that windows Software "FNIRSI CNC Power Supply" Windows Software here or via PN? I got exactly that powersupply but too late got aware that there is a PC companion software for it. This would be much welcome.Other than that a 2nd question: This "battery charge diode".... this is really nasty. Other units like this have somthing like it already integrated. Is there a way to permanently install it? Like in the casing itself and compensate for the 0.7V voltage drop over the diode?Best regards and many thanks in advance!

author: Kean
author_rank: Unknown
timestamp: July 31, 2025, 02:14:57 pm
content: Quote from: careyer on July 31, 2025, 01:33:09 pmIs this what you want?PC software for FNIRSI DC6006L:https://drive.google.com/file/d/18v_N7DlDFcWVErspvWMKMSLgJ4-xR2au/view?usp=sharingQuote from: careyer on July 31, 2025, 01:33:09 pmNot really. It is quite hard to compensate for the variable diode voltage drop cheaply else they would have incorporated that without spending money on supplying the external protection diode.Edit to add:You can also try this software:https://github.com/iordic/jdcxIt isn't a great power supply, but kind of handy to have on hand when I travel.

author: careyer
author_rank: Contributor
timestamp: August 01, 2025, 07:06:55 am
content: Yeah, this looks like what I am searching for. Unfortunately the access to that google drive file is limited. I cannot view or download it. I sent a access request. Would be great if you could grant it. Thanks!Update: Thank you! Got it!Regarding the Diode: Back then I also bought a very very chaep regulator module (also with color display) from another vendor. It looks similar though! Well, most of them do actually. There everything is working nicely.. without additional diode needed. You can just connect a battery to the output and as long as the output is not activated it will nicely show the battery voltage and once you activate the output it will beginn to charge (if output voltage > battery voltage).... if output is < battery voltage nothing will happen and it still shows you the battery voltage. Very nice and convinient. It was roughly 1/4 of the price ;-)