And the real product pictures now: Short demo of touch functionality (will post later on the bluetooth mesh network functionality): https://streamable.com/b52qb https://streamable.com/dj3z7 Sorry for the solder bridge replacing the R20 inrush current limiting resistor..that's just temporary until I get the real component . And yes, the capacitor across the bulb is still needed but it's a very small one of 0.1uF/250Vac and it should fit near the light bulb on the ceiling (only one is needed if there are two light bulbs on the same circuit). The aluminum foil wrapped around that sponge is to "extend" the capacitive sensor so that it reaches the front plate fake plastic button. The 3d printed clear plastic around it is to hold it in place and also to spread the small leds light. Everything is custom made except for the front plastics.

@NeverDie Well What can I say? Only that the PDF is here. They seem achieved this ridiculous leakage with careful transistor selection. Very nice!

It might be possible to power the Arduino off the output pin. Since they are dirt cheap I would just test it. But like the others I would suggest to use the interrupts of pin 2 and 3. For my battery powered 3.3v pro mini I use 3.3v pir sensors without the voltage regulator. The standard 5v pir needs at least 4.5v just to step it down internally to 3.3V. On these I had problems with voltage stability because I stepped it up to 5V. Also the battery lifetime was poor. With the 3.3v pir version this thing runs for months. With the solar panel on top maybe forever.

@bisschopsr I now have the schematics posted for all of my boards. I also posted another board for my in-wall scene controller line. Is there any other pics or information that you think might be useful to others for any of these boards?

@ceech I really like this design, however I think it has a problem: According to the datasheet the TPS610986DSET has no feature to disconnect the load at low battery voltages. I think the result will be that e.g. a ESP32 or other power hungry chips will not power up properly. The TPS63031 might therefore be a better fit. btw.: Do you still sell assembled versions of this design? Would you be willing to create a new version with the TPS63031 and probably also with 10 or 20F capacitors or an board to solder your own capacitors. Best regards Tobias

@m26872 said in Encapsulated transformers instead of traditional switching power supplies like Hi-Link: for me the sunny season is too short. I havn't yet tried to use solar batteries in winter so maybe I have the same problems (despite the fact that I'm living 3 degrees south of you), but I have backup solution for very cloudy winter days - regular battery charger.

Hi @koresh - I had a little accident on the AC side :-). I was wondering what values the 2 resistors (TH and SMD) and diode are ? Thanks!

What is the max ampere capacity of 3.3V battery it can charge ? Is there any upper limit like 1000mAh or 3300mAh like that ?

@yury said in Wall Socket Insertable Node: Looks cool! Do you have experience with capacities switches? I did not play much with them. afraid to use close to AC interference though... You need to use a capacitive IC with active shielding, basically you have an extra electrode around your touch electrode and the touch IC will compare capacitive change of the touch electrode with capacitive change from the shield electrode. If the change is due to electrical interference then both electrodes will be changed in a similar way and the IC will not trigger.

@MiKa which box are you referring to? Generic boxes are available here: https://www.mysensors.org/store/boxes

I like the project. I guess the circuit is not a clone. It costs a lot actually. Is there any other alternatives than cost < 5$ ?

@epierre You can use a Peltier element to power this board. Like this one: http://www.ebay.com/itm/TEC1-12706-12V-60W-Heatsink-Thermoelectric-Cooler-Cooling-Peltier-Plate-Module-/121349774916?hash=item1c41029e44:g:mukAAOSwDNdVrg-U TEC1-12706 12V 60W Heatsink Thermoelectric Cooler Cooling Peltier Plate Module $2.09 Sold out