Opinions about PID REX-C100FK02-V*AN DN ?

Hello,
following the purchase of a “PID” REX-C100FK02-V AN DN on Aliex **** I receive an article that does not look like those seen on the internet.
From the outside everything is OK but inside the box i was surprised by the PCB very skinny.

The PID has a microcontroller HY16F88VB that suggests that it is a PIC16F but unfortunately it is not the case is a chip Hycontek and no document found on this chip.

http://www.microchip.com/forums/m847291.aspx
http://www.hycontek.com/page2-HY16F.html

For the rest not LM7805 for the SSR output, the multimeter i get 1.5V at rest and 11.5V at SSR output work.

– Is it dangerous to have a constant output of 1.5V on the SSR which is activated from 3V to 32V ?
Is it possible to reverse engineer to add a LM7805 to the SSR output on the PCB ?

In the announcement the seller indicates a relay max 250v 3a not present on the product

Would it be possible to welded a led buzzer output Alarm on the PCB ? and last question, is it possible to use this PID safely ?

Thank you in advance for your information that will also serve future interested in order not to be in my situation. Cordially.

I don’t know this device but I found some links, maybe you know them , maybe not.
http://mightyohm.com/forum/viewtopic.php?t=5939
https://www.homebrewtalk.com/forum/thre … ay.254480/

[zoomx – Mon Apr 02, 2018 8:27 pm] –
I don’t know this device but I found some links, maybe you know them , maybe not.
http://mightyohm.com/forum/viewtopic.php?t=5939
https://www.homebrewtalk.com/forum/thre … ay.254480/

Thank you very much dear Zoomx, i already read this, i find how to install an alarm here is the link…
http://www.gaggiausersgroup.com/index.php?topic=1136.0

I advanced a little in my research and also find the supposed location of a lm7805 for pcb, only we must add resistances that i can not easily understand the values ​​of resistances to added, i will continue to search, thank you very much for your help, cordially.

Hello,

I had a comic story that i would like to share , i wrote to the seller to say that it is not fair to indicate a false ad and that it seemed to be the clone of the clone , then i send an image with a real rex and forgery

By looking in the site, i come across the same model (buyer photos) sold and shipped by
Aliex **** i thought, if even they do this, it’s over for my claim indeed, apart from some customers unhappy with the PCB and a person who insults the seller by showing a picture of the SSR relay melted otherwise the rest is satisfied.

I think I’ll use it under surveillance if i use it or try to do a STM32PID project if i find, thanks again Zoomx for your guidance, best regards

Looking at the images in the previous posts, there are a couple of pretty dodgy looking soldering areas.

DuffSoldering.jpg (30.66 KiB) Viewed 731 times

Thank you very much Andy,

Indeed i saw his bad welding 220V transformer but being amateur … i will add solder to solidify. Tomorrow day of verdict, Aliex **** must judge and decide my claim, the seller tells me to use it as long as it works do not worry about the false announcement. Thanks again for the very useful information, cordially.

After what Andy pointed out, I wouldn’t use that controller to manage any load. You are at risk of it catching fire or exploding.

Thank you very much Victor_pv for the opinion very useful, you totally cooled me of this PID
i would send it but it would cost 3x more expensive so i wait for the decision of Aliex. or i will drop the case, cordially.

The unsoldered pins may not actually be as bad as they look, since they go to tracks which may be unpopulated, however having said that, they should be soldered, since thy add mechanical stability to the transformer on the other side.

That they haven’t been soldered suggests that there is some hand soldering going on in the assembly plant, and that speed of assembly has been considered more important than quality.

You get what you pay for, and the major draw of this sort of device is the price, so if you can live with the quality, and it is going to be used in a location where catastrophic failure is not a life or death problem, then I would just use it. I wouldn’t use them in a production environment, or a product I was planning to sell however, without extensive testing and ongoing QA.

EDIT: They dont look particularly hackable. The controller looks to he a hycontek part, but I can’t find any data for it.
https://translate.google.com/translate? … edit-text=

To me the shoddy solder is more of a problem because is sign that quality didn’t matter much to the manufacturer, than because problems caused of the individual solders themselves. What else is defective that the picture is not showing? The MCU itself seems to be some clone of PICs too. Seems to have been built to the lowest possible cost at the expense of anything else.
I have seen quite a few pictures of burnt cheap SSR and PID controller clones when looking to get a couple of SSRs for my reflow oven. Eventually I bought used ones locally, cridom brand, and personally I trust more a used brand name than a brand new that was built like crap from the start.
But as said above, that is my personal opinion. I would probably use it to manage a small load, perhaps 1A or less, but would definitely not use it close to half the specification limit, and anything in between is grey.
I think raising the matter to Aliexpress is the best course, since the description was a lie, and hope they will refund the money.

Don’t know in what country you are located, but in the US is relatively easy to find good used PID controllers for just a bit more money in ebay.

I thought it might be a PIC too, but found nothing similar, I think it is more likely to be a custom Hycontek part
https://translate.google.com/translate? … edit-text=

Thank you with all my heart for Andy, Victor and Zoomx,

Dear Andy i do not know how you managed to find the information on the chip Hycontec but you’re very strong, thank you very much for sharing, apparently it’s a new chip series used on the Thermostat W1209, W1401 … good market to avoid hacking as with the stm8

Thank you very much Victor for your warning, after solidifying the welds and good control and test in practice, i will see if it is usable under supervision. Andy said “you get what you pay” it will remain engraved in my memory.

Thank you again for your support, with my respects for you, cordially

Hello,
I wanted to inform about the progress of this case, Aliex to decide to bring the judgment to April 12 i wrote to the salesman to tell him that i did not want to hurt him and that if he had registered the truth about the ad correctly,

that i would not buy this fake PID, the seller wants me to understand that as long as it works this is not his problem i wanted to remove the dispute to make him gifts a his children but as it is not correct and commercial i will continue until the end.

I like to forgive because the error is human see what the judge Mr Aliex will say cordially

Thanks, keep us updated. Also if you decide to use and it works or fails, would be nice if you post an update in case someone else is thinking on getting the same.
As you said is not correct and commercial, the seller should have been more straight forward with you.

Hello,

no worries Victor, i would update if i detect a problem, thank you. Finally Aliex *** has offered to refund half of the purchase price, which i accept, Aliex *** says that the descriptions are not consistent with the realiter.

I also find the LM7805 it is mini (visible on the photo of Andy) indeed it is the 78L05 so small. I also noticed a lot of welding remains, I have to weld the processor’s paw and a good cleaning of the pcb and pass the test.

Thanks again for all your information and help, very good weekend

Hello,

update as promised from the clone PID Rex, finally after being refunded 50%, the PID works with the options limit, there are only 3 digits, impossible to hack the menu to have 4 digits or I n is not successful, (I do not need it too).

The only thing that bothers me is the output voltage SSR, at rest it displays 1.5V, the SSR output in operation indicates 12V, although the SSR is activated from 3V 1.5V constant scare me (I am amateur).

Otherwise the welds have been redone and the PCB clean welding remains everything is OK. I do not advise this model, look closely at the serial number and avoid this one, I wish you the best for you, thank you again for your advice, Regards.