Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

💬 Touch switch with glass panel (one channel, battery, slim)

openhardware.io last edited by openhardware.io

https://www.openhardware.io/view/598/Touch-switch-with-glass-panel-one-channel-battery-slim
Reply Quote 1
1 Reply Last reply

1
Posts

828
Views

Suggested Topics

💬 Wireless Touch Switch: Relay Model - (For Livolo crystals)
OpenHardware.io • mysensors nrf24l01 relay switch light light switch livolo • • openhardware.io

30

1
Votes

30
Posts

7322
Views

@dzungpham0703 I buy them on Aliexpress: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20180706102504&SearchText=HTTM If you apply hot air it is easy to take off the white "double sided tape" and the plastic.
💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1 Ver: B8)
OpenHardware.io • mysensors livolo • • openhardware.io

100

4
Votes

100
Posts

36755
Views

@dzungpham0703 I replied in the nrf51822 thread. Yes I managed to make it work like the original with BLE stack. And using the wonderful Cypress Proc BLE solution including capsense and lots of goodies . Cypress really rocks! I love them. The current consumption was lowered to 200uA without being connected and 700uA connected. Those numbers include LEDs current consumption and other blocks like touch sensing. I'll get back with more updates when it's finished.
💬 Livolo 3 buttons US/AU switch adapter
OpenHardware.io • mysensors contest2017 switch livolo wall switch usau • • openhardware.io

75

2
Votes

75
Posts

21873
Views

@marcusakamg7 that's strange, I never ordered this board on OSHPark, I will check later.
💬 NRF51822 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

11

0
Votes

11
Posts

2698
Views

@andreas-sieber The white circle on the PCB you mean? IMO That's silkscreen indicating the touch area.
💬 NRF51822 Livolo 2 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

3

0
Votes

3
Posts

1267
Views

@shabba Hi, unfortunately I don't have time and patience for doing BOM's on all of my projects but in this case it's not very hard as the external component count is greatly reduced by using the NRF51822 RF SOC which is a PTR5518 module from Aliexpress. Other than that there is the Microchip touch sense controller - MTCH105 and the usual smd resistors(0603) and caps. Other than that you're not forced to use and solder the onboard dc-dc converter so you don't have to worry about those components - you just need to solder the 3V_EN jumper to use the Livolo 3V output coming from the main relays/power supply board.
💬 Wireless Touch Switch: Triac Model - (For Livolo crystals)
OpenHardware.io • mysensors nrf24l01 relay switch light atmega328p light switch livolo w25x40clsnig • • openhardware.io

3

0
Votes

3
Posts

1491
Views

I have published all the documentation in a Github repository. If someone wants to make PCBs, I recommend that you wait a little longer until you receive my PCBs and try them. https://github.com/giltesa/SmartHome
💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo • • openhardware.io

47

1
Votes

47
Posts

13470
Views

Hello all, I studied a little bit more this part of the circuit and it's a standard self oscillating flyback converter or a ringing choke converter as others call it. Indeed it provides the most compact solution for space constrained designs. But all of this comes at a cost: it's difficult to obtain a stable circuit and it has to be tuned by trial and error - at least this is what the literature says. I'm not a switching power supplies expert here(even though I want to learn more about SMPS's in general but my time is limited for now) but I've come to a conclusion: it's difficult to tune this or to change the existing circuit to accommodate the mysensors circuits power requirements. I tried various combinations using sleep schemes and to change the flyback converter components as other mentioned in the mysensors forum and indeed I can power up my custom design that is presented in this thread BUT it's NOT STABLE. From time to time the switching transistor(mje13003) burns out and this is because I removed the resistor placed at the input of this power supply - near the bridge rectifier and replaced it with a wire(this is not the same resistor as @Lukaspp replaced from the base of the transistor which is the startup resistor for the flyback converter). Now the only purpose that I imagine for this resistor is to suppress the transients - but it has a big value(100Kohm) which limits the current to a non-usable value for our purpose. I know that there are other solutions to overcome the transients but they are either bulky or too slow for this(correct me if I'm wrong here). More than that let's not forget that we have 2 power supplies here and when the lights go on the first supply(flyback) input gets shorted by the relays contact(I have the relays variant btw not the one with triac) so I'm thinking that other transients appear here as the primary inductor doesn't like that as far as I know - so I assume the above mentioned resistor of 100Kohm comes into play here too. Another role for it would be to limit the inrush currents. I played with that value too but it needs to be very low to have something stable and I got a value around 200ohms but that doesn't help as it's too low and after some time the resistor burned up and saved my transistor :simple_smile: . Now with all the tricks in the world and tuning the flyback converter to give more current this won't help as again let's not forget we have a SERIES circuit here so without external intervention we can't achieve that(only if we break somehow the laws of physics or maybe my thinking is limited :simple_smile: ). In this case the external capacitor placed across the light bulb comes into play to supply enough current to the standby circuit which is our flyback converter over here. I played with that one too and from 0,47uF I got to 4.7uF to have a decent result - but this one gets bulky and more expensive from obvious reasons. And let's not forget that the light bulb itself has some impact overall because this is the actual LOAD that we want to control and there are various light bulbs over there with various requirements. More than that they have their power supply embedded which in most of the cases is a(you guessed maybe): a self oscillating FLYBACK CONVERTER or similar. So this one too has inrush currents, transients which are sensed down the line to our dear Livolo switch and affects my custom board stability again :simple_smile: - isn't life beautiful? :simple_smile: So far these are the results of my trials and none of them proved to be stable so I kinda gave up on this and will try to use a normal powering scheme somehow(as Sonoff switches with a battery powered touch switch on the wall). Not the best solution of all but this is what you get when the infrastructure wasn't thought for this scenarios from the beginning. The Livolo guys thought of all of this I assume so that's why they stayed only with a simple circuit - a PIC mcu which maybe sleeps most of the time and a simple radio receiver which draws around 5mA or even less - so yeah that's why this works and it's stable in its original form.
💬 RFM69 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo • • openhardware.io

8

1
Votes

8
Posts

2606
Views

@mtiutiu Wooow Wooow Wooow ! Here they are ! This one gang you designed will be my 1st Livolo hack So many many thanks @mtiutiu Best regards

💬 Touch switch with glass panel (one channel, battery, slim)

Suggested Topics

💬 Wireless Touch Switch: Relay Model - (For Livolo crystals)
OpenHardware.io • mysensors nrf24l01 relay switch light light switch livolo • • openhardware.io

💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1 Ver: B8)
OpenHardware.io • mysensors livolo • • openhardware.io

💬 Livolo 3 buttons US/AU switch adapter
OpenHardware.io • mysensors contest2017 switch livolo wall switch usau • • openhardware.io

💬 NRF51822 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

💬 NRF51822 Livolo 2 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

💬 Wireless Touch Switch: Triac Model - (For Livolo crystals)
OpenHardware.io • mysensors nrf24l01 relay switch light atmega328p light switch livolo w25x40clsnig • • openhardware.io

💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo • • openhardware.io

💬 RFM69 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo • • openhardware.io

16
Online

11.5k
Users

11.1k
Topics

112.8k
Posts

💬 Touch switch with glass panel (one channel, battery, slim)

Suggested Topics

💬 Wireless Touch Switch: Relay Model - (For Livolo crystals) OpenHardware.io • mysensors nrf24l01 relay switch light light switch livolo • • openhardware.io

💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1 Ver: B8) OpenHardware.io • mysensors livolo • • openhardware.io

💬 Livolo 3 buttons US/AU switch adapter OpenHardware.io • mysensors contest2017 switch livolo wall switch usau • • openhardware.io

💬 NRF51822 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2) OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

💬 NRF51822 Livolo 2 channel 1 way EU switch(VL-C700X-1_Ver_C2) OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

💬 Wireless Touch Switch: Triac Model - (For Livolo crystals) OpenHardware.io • mysensors nrf24l01 relay switch light atmega328p light switch livolo w25x40clsnig • • openhardware.io

💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1_Ver_C2) OpenHardware.io • mysensors livolo • • openhardware.io

💬 RFM69 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2) OpenHardware.io • mysensors livolo • • openhardware.io

16Online

11.5kUsers

11.1kTopics

112.8kPosts

💬 Wireless Touch Switch: Relay Model - (For Livolo crystals)
OpenHardware.io • mysensors nrf24l01 relay switch light light switch livolo • • openhardware.io

💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1 Ver: B8)
OpenHardware.io • mysensors livolo • • openhardware.io

💬 Livolo 3 buttons US/AU switch adapter
OpenHardware.io • mysensors contest2017 switch livolo wall switch usau • • openhardware.io

💬 NRF51822 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

💬 NRF51822 Livolo 2 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo nrf51 • • openhardware.io

💬 Wireless Touch Switch: Triac Model - (For Livolo crystals)
OpenHardware.io • mysensors nrf24l01 relay switch light atmega328p light switch livolo w25x40clsnig • • openhardware.io

💬 RFM69 Livolo 2 channels 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo • • openhardware.io

💬 RFM69 Livolo 1 channel 1 way EU switch(VL-C700X-1_Ver_C2)
OpenHardware.io • mysensors livolo • • openhardware.io

16
Online

11.5k
Users

11.1k
Topics

112.8k
Posts