💬 In Wall AC/DC Pcb (with Relay) for MySensors (SMD)
@ragflyer - Thank you!
I suggest using the ISCP to update firmware. There isnt any DTR (to reset) on the MysX (this design - its coming next revision).
The box is 56mm wide and 43mm deep and the height is 24.6mm
Uncluding the SSR relay sticking out its 29mm height.
fra290 last edited by
what's the status of this great project? can I produce the PCB? I want use this for sopstitute my current X10 plant based on around 20 micro module.
only one question, I need to control light also by a traditional switch (momentary button) where a can connect the normal switch, A1 or A2 to GND is OK? in my case can be lot of distance from the node to switch, in some case more them 4 meters and the wire for control switch run in a same pipe to grid linee, can this plant create interference? what do you think to insert one optical cupolaed?
@fra290 - Hi!
Status is that I have just received the updated new PCB and are planning to test them... but havent had the time.
I have updated openhardware.io with 7.1 which is the latest and the one im testing.
You can download the gerber or eagles files and manufacture.
I have also made a request for the pcbhouses to add 7.1 so you can buy them from openhardware.io
Its small revisions and I dont think there should be any major issues with 7.1
@sundberg84 Thanks for sharing this. I'm gathering the components and plan to build it soon when the PCB v7.1 is available.
I do have a few questions if I may
- with the Relay, is it important to have one that has zero crossover? E.g the difference between getting the G3MC-202PL over a G3MC-202P
- what were you planning to use the 16Mhz oscillator for eventually?
- do you see any issues if I build the first prototype using an ESP-12 (ESP8266 with onboard Serial WiFi running at 3.3v)?
- It must depend on what you are planning to connect to the relay
- The oscillator is for the MCU - you can program a bootloader without it and use the internal.
- No issue - please do! Im glad i can make stuff that gets the community forward. Best of luck!
It must depend on what you are planning to connect to the relay
It would use it to switch on and off an external mounted lamp - so with a fixed Watt & Voltage. Probably an LED 220V Lamp. Should I avoid zero-crossover as I've read somewhere that zero-crossover can cause a surge current of perhaps 10 to 40 times the steady state current when switched on.
@Paul-Derbyshire - sorry, to be hones i missunderstood you.
Most SSR sold for arduino are P and not PL it seems.
"The light from the diode is beamed into a light-sensitive semiconductor that, in the case of zero-voltage crossover relays, conditions the control circuit to turn on the output solid-state switch at the next zero-voltage crossover. In the case of nonzero-voltage crossover relays, the output solid-state switch is turned on at the precise voltage occurring at the time."
hi, just an idea, do you think it is possible to add a current sensor to the PCB in order to add a power meter function to the node to monitor power consumption? say up to 20A
@Jose-Simoes - no clue about current sensors... sorry I just cant answer that at the moment.
This post is deleted!
@sundberg84 -hey, i was meaning something like the ACS712 Module, but add the ic to the PCB for better integration.
Well, to safe space and meet my goal to be able to have it so small so it fits inside a wallsocket i have excluded all sensors and included the MysX connector. This way every user can add their own sensor.
Justas last edited by
I'm really interested in this module. Maybe stupid question, but I'm very new with openhardware and would like to understand: if I will go and buy through the link provided (10xPCB for 15$), will I receive already assembled unit with all the parts, or I have to go and buy parts and assemble it myself?
Thanks & Regards
yes you have to buy parts and assemble them yourself. 1.5$ by PCB is cheap, you can't have the components for this price
you get the PCB only, then you have to buy all the components and solder them on the pcb
If you aren't a lot familiar with soldering you could also evaluate Sonoff wifi relays
Justas last edited by
Thanks, I also checked the parts list and found that total price is more than $14, so now I see how stupid my questions was
and building it is 99% of the fun !
hugch last edited by hugch
Very nice project. And it is so nice that you thought about the fuses for the power supply and the relais.
I have two additional ideas:
- adding the ATSHA204 fo secure signing
- I could be to big to integrate but something like this (https://www.aliexpress.com/item/1Bit-AC-220V-Optocoupler-Isolation-Module-Testing-Board-Adaptive-for-PLC/32754734564.html) would be great to detect the in wall switch state.
exilit last edited by
Great project, thank you for sharing. Searching for a power supply i found your project which seems to fit my needs pretty well. What do you think are the main differences to the AC/DC/Double SSD Relay by Aproxx (https://www.mysensors.org/hardware/ac-dc-ssd-relay). I am mainly interested in the AC/DC conversion part.Would like to hear your opinion on that.
@exilit - sorry my friend, I have not studied the AC/DC/Double SSD Relay by Aproxx very closely.
Mine is a bit smaller instead of 50x50 but he got 2 relays.