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💬 mySensors Hit Train

openhardware.io last edited by

https://www.openhardware.io/view/747/mySensors-Hit-Train
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💬 4-channel switcher/dimmer
OpenHardware.io • mysensors contest2017 dimmer • • openhardware.io

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@HouseIOT Sorry to trouble you, i use a mysensors-wifi-gateway with protocol 2.1.1 , and my homeautomation is home-assistant. I can't use your dimmer in my system. After read the reference, there need to add V-percentage and V-status in the code, as a newbie , I can't do it myself. So I wondered，can you do me a favor? Thanks a lot.
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@Yveaux Thanks for your response. I guess that's it. I have to burn a bootloader first :-). I have a USBasp Programmer for that. Can you point me to a wiring diagram that shows how to connect the programmer to the circuit board?
💬 Livolo 3 buttons US/AU switch adapter
OpenHardware.io • mysensors contest2017 switch livolo wall switch usau • • openhardware.io

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@marcusakamg7 that's strange, I never ordered this board on OSHPark, I will check later.
💬 Multi-purpose sensor
OpenHardware.io • mysensors nrf24l01 sensor atsha204a bh1750 htu21d w25x40clsnig • • openhardware.io

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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

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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.
💬 Wirsbo/uponor thermostat
OpenHardware.io • mysensors temperature thermostat floor heating uponor wirsbo • • openhardware.io

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I am non technical but I have 8 wirsbo stats in my house. One of them is faulty and the unit is now obsolete. Is it possible to purchase one of these pcbs and use it to replace the one in the faulty stat ? Thanks Richard
💬 Wireless remote control
OpenHardware.io • mysensors nrf24l01 switch remote control • • openhardware.io

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Hi @talhatec , The remote controls work well. 4 months ago I installed a new battery and from time to time I press the button to check if they continue with battery, they sleep correctly. I remain pending to change the RF antenna for a better one and to improve some failures in the connectors of the battery that at the moment are very fragile (the pad has little copper). The casing can be purchased online https://www.ebay.com/itm/Bluetooth-4-0-GPS-Tracker-Locator-Smart-Alarm-Anti-lost-Device-Self-Portrait-SC/401394156488 For now the project is stopped, I want to test the Aqara sensors (I buy them this week), in any case the domotics is now my lowest priority.
Multisensor
OpenHardware.io • mysensors temperature mysensor motion dht22 rgb lux rfid buzzer • • openhardware.io

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@yoonie said: For the pro mini version, should i create another Openhardware project, or should i put it here, in the already existing project? Might be better to create a new project as they uses a different set of design files.

💬 mySensors Hit Train

Suggested Topics

💬 4-channel switcher/dimmer
OpenHardware.io • mysensors contest2017 dimmer • • openhardware.io

Solar powered sensor board
OpenHardware.io • mysensors board • • openhardware.io

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

💬 Multi-purpose sensor
OpenHardware.io • mysensors nrf24l01 sensor atsha204a bh1750 htu21d w25x40clsnig • • openhardware.io

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

💬 Wirsbo/uponor thermostat
OpenHardware.io • mysensors temperature thermostat floor heating uponor wirsbo • • openhardware.io

💬 Wireless remote control
OpenHardware.io • mysensors nrf24l01 switch remote control • • openhardware.io

Multisensor
OpenHardware.io • mysensors temperature mysensor motion dht22 rgb lux rfid buzzer • • openhardware.io

38
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💬 mySensors Hit Train

Suggested Topics

💬 4-channel switcher/dimmer OpenHardware.io • mysensors contest2017 dimmer • • openhardware.io

Solar powered sensor board OpenHardware.io • mysensors board • • openhardware.io

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

💬 Multi-purpose sensor OpenHardware.io • mysensors nrf24l01 sensor atsha204a bh1750 htu21d w25x40clsnig • • openhardware.io

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

💬 Wirsbo/uponor thermostat OpenHardware.io • mysensors temperature thermostat floor heating uponor wirsbo • • openhardware.io

💬 Wireless remote control OpenHardware.io • mysensors nrf24l01 switch remote control • • openhardware.io

Multisensor OpenHardware.io • mysensors temperature mysensor motion dht22 rgb lux rfid buzzer • • openhardware.io

38Online

11.5kUsers

11.1kTopics

112.9kPosts

💬 4-channel switcher/dimmer
OpenHardware.io • mysensors contest2017 dimmer • • openhardware.io

Solar powered sensor board
OpenHardware.io • mysensors board • • openhardware.io

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

💬 Multi-purpose sensor
OpenHardware.io • mysensors nrf24l01 sensor atsha204a bh1750 htu21d w25x40clsnig • • openhardware.io

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

💬 Wirsbo/uponor thermostat
OpenHardware.io • mysensors temperature thermostat floor heating uponor wirsbo • • openhardware.io

💬 Wireless remote control
OpenHardware.io • mysensors nrf24l01 switch remote control • • openhardware.io

Multisensor
OpenHardware.io • mysensors temperature mysensor motion dht22 rgb lux rfid buzzer • • openhardware.io

38
Online

11.5k
Users

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Topics

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Posts