@Andrei-Călin-Tătar - can you please explain all of your jumper wires. US version looks differently obviously so it's really hard to figure out what you did there based on just the pictures.

@Andrei-Călin-Tătar - Understood, thanks! Why did you need a new touch sensor, could you reuse the existing one?

@Andrei-Călin-Tătar - How did you solve the problem with the power? I tried powering arduino from the built-in 3V connection, but it only worked to turn the lights on. Once on, I almost couldn't communicate with the arduino anymore (like 1 attempt from 20 would be successful).

@Nca78 - I'm not sure if you've seen this or not, but someone seems to have managed to crack the dimmer protocol in this thread: https://forum.mysensors.org/topic/2775/livolo-glass-panel-touch-light-wall-switch-arduino-433mhz

@Nca78 - Hi! Haven't heard from your for quite some time :) Any progress with this? Were you able to resolve the poor sensitivity issues?

@Nca78 - only 500 pieces :) That's OK though, they're cheap, I already ordered the 0603 ones, just hoping my soldering skills are going to be enough for that size. Let me know as soon as you decide on the res/cap packages. I have only 0805, but can order something else if needed.
Thanks for keeping me in the loop and hope you will be able to crack that protocol!

@Nca78 - great news indeed! So you think it's OK to order the PCBs? Did you fix the bug with the resistor or I should add the ground connection myself before ordering the PCBs?
Did you test it with the dimmable switch by the way?

@Nca78 - great, thanks! I don't mind soldering all of them, just wasn't sure if I needed to buy the specific type/package. Is the voltage regulator (SOT23-3) only necessary if I want to encrypt the messages?

@Nca78 - thanks! I can order the non-dimmable versions, but would prefer to avoid this if possible.
Is it necessary to use EIA3216 package for the tantalum capacitors or is it just something you've had handy and can be replaced with any other package (e.g. 0805 or 1206)?

@Nca78 - great! By the way, will I be able to use it with my dimmable switches (even if I lose the dimming functionality) or do I need the non-dimmable version?

@Nca78 - I ordered my PCBs (not Livolo) around the same time you did using Hongkong post and they just arrived yesterday. Never had to deal with the customs...

@Nca78 - Thanks for the update! Looks like shipping takes a lot of time even with the DHL delivery. Will be waiting for you to test and give us green light to order the PCBs :)

@Nca78 - makes sense :) When are you going to upload the gerber files?

@Nca78 - Great! Do you believe the new version has all of the issues fixed?

@Nca78 Awesome, thanks for the update!

So how's the testing going? I'm thinking to try to have seeed to print and assemble the pcb for me as I hate to even think about soldering all of these smd parts manually :)

@gohan - not sure how exactly it answers my question? I thought you meant I could run the pir from 3.3v. I could plug everything to an outlet and don't worry about the batteries at all. The pir works perfectly from two batteries and the 5v booster, so why would I want to add more batteries and make the whole thing much bigger?

@gohan - I tried to connect the 3.3v to one of the three pins where you'd usually put a jumper (H, L pads) as I've seen people discussing it on this forum and it just didn't work for me, the sensor did work, but very unstable, would fire up every time radio sends or receives something.

@sundberg84 - correct, the 5v booster looks exactly like the 3.3v booster. I have another sensor I've built manually and it works exactly like that, arduino/temp/hum/radio all work from 3.3v and pir works from 5v. I power it all with two rechargeable batteries (so ~2.6 max charged, not even 3) and it's been running good for several months already and still shows 2.45-2.50.

@sundberg84 - thanks for your board, it seems to be almost exactly what I was looking for! What do you think would be the best way to adjust it if I need to boost the batteries not only to 3.3V, but also to 5V to run the pir sensor?