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 :
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 ?
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 ?
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.
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 ?
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
What a huge topic
Has anyone tested this 3,2 $ module ? Do you think it is safe to put it in the wall socket ?
In the comments on guy disassembled it :