Hello

I found the problem : the config is waiting for the pin number, it is obvious as it is called my-rs485-de-pin, and not the GPIO number... So GPIO 26 is pin number 37. I put 37 in the config and it is now ok

Hi

I understood that the HLK-PM01 can not be directly used out of the box, and that we need to solder it to a pcb with Varistor etc. but i may be wrong

I dont have the skills to do that for something potentially dangerous. I need something that can be used out of the box and connect it directly to a wemos mini d1

@dbemowsk
I'm afraid it won't fit in the wall socket because of the metal stem, so it would be better to solder the power wires to it :

@dbemowsk
I'm planning to buy one, i'm sure there are plenty usage of it (sorry for my bad english i'm french :))

Concerning the PSU, one question : we could just disasemble an iphone charger, the small one is 5cm x 1,5cm x 3 cm, and reuse it in the wall. IMHO it is more safe than build ourselves a PSU. Has anybody tried this ?

@dbemowsk
Ok thanks. I will try to build the sundberg84 board but i will try also to find a case built with a 3D printer as i prefer not to let all this stuff unprotected in case someone else than me in the futur open the wall socket

@sundberg84
Quite small, so.

In a link above i've seen a review of the HLK from one guy who seems to know about electronics.

He recommends using the VIGORTRONIX VTX-214-005-105 AC/DC PCB Mount Power Supply . He said "for only a few quid more you win a switch mode PSU that stands a chance of not requiring external components to pass Class B!"

Anyone here has tested the Vigortronix ? Is it better than HLK ?

@sundberg84

Thanks a lot it is very useful and i'm sure i can do it myself with tour board already designed.

Juste one question : what are the sizes of the bard in all 3 dimensions ? I need to be sure it will fit in the wall where i need to put it before ordering the components. I could not find these info on the page you sent me.

@nca78

Thanks a lot for this complete answer. I understand that i should use HLK but put in on a PCB and add varistor and fuse like described in the edit of the first post. The problem is that I really don't know a lot about eletronic. For arduino things in 5v or 3,3v I have no problem to try to do myself, in order to learn, but for 220v i prefer to use a finished product... Is there exist somewhere a finished product with the HLK and all necessary pieces, ready to wire to the 220 v and to the arduino/nodemcu ?

Regards

Matz

Hi

I understood that the HLK-PM01 can not be directly used out of the box, and that we need to solder it to a pcb with Varistor etc. but i may be wrong

I dont have the skills to do that for something potentially dangerous. I need something that can be used out of the box and connect it directly to a wemos mini d1

Hi Guys,

What a huge topic

Has anyone tested this 3,2 $ module ? Do you think it is safe to put it in the wall socket ?

AC-DC Isolated AC 110V / 220V To DC 5V 600mA Constant Voltage Switch Power Supply Converter Module

In the comments on guy disassembled it :

Regards

Matz

@mfalkvidd i hope i will help somebody, we must admit that the page on the site is not really detailed on the rs485 transport mode for the raspberry pi gateway

Hello

I found the problem : the config is waiting for the pin number, it is obvious as it is called my-rs485-de-pin, and not the GPIO number... So GPIO 26 is pin number 37. I put 37 in the config and it is now ok