💬 AC-DC double solid state relay module

[mr_const]

Hi @approx, there is 4k7 resistor placeholder under arduino, near 100nf capacitor, but you didn't mention it in a project description - is this resistor optional?

[Samuel235]

@Konstantin-Kolesnichenko, I would highly recommend the pullup resistor.

Please see https://wp.josh.com/2014/06/23/no-external-pull-up-needed-for-ds18b20-temp-sensor/ for more information regarding this resistor.

[mr_const]

@okos I got 11 pieces for one order.
@Samuel235 thank you, soldered one :)

[the cosmic gate]

anybody who's got a complete kit for sale ? Want to test build one (single relay is enough)
(or maybe nicer: a 3in1 solution : Motion detection , relais , DHT of other temp sensor)

[mr_const]

Is somewhere there present source for this module with temperature module support?

[badmannen]

this looks like a great project. Have anyone made a complete shopping / whish-list on Alibaba for all the components needed? ( I´m lookin for safest version possible =)

Many thanks,
Henrik

[Nca78]

@badmannen I have ordered nearly everything on aliexpress but I had to buy from many different sellers to have everything, I don't know if they are all reliable, I will know in 3-4 weeks and then post the links for the items I received.
I took some 250mA fuses as no one was selling 200mA slow fuses on aliexpress, and also some 77°C temp fuses instead of the 73° because they were less than half the price. I'll grill one or two to make sure they are real temp fuses when I receive them ;)

Not sure if I order the PCBs from DirtyPCB now or if I wait to received my previous (and first order there) to be sure they will reach my mailbox...

[Nca78]

@badmannen I have just received my temp fuses, 1 of the 10 is dead, I tested one that was ok to make sure it was a temp fuse. I used the thermometer function on my multimeter and heated at the same time with my soldering iron at lowest temperature possible (200°C).
Heated until thermometer reached 50°C, fuse was still ok.
Heated again a bit longer and I heard some noise when thermometer went over 60°C. I stopped and checked: the fuse was blown. Given that multimeter thermometer is not extremely precise and has some lag to increase the temperature, I think the claim of 77°C cut off is probably right or at least not far from reality. And at least I'm sure these are temp fuses. I'm not testing another one as I have only 8 left now and I'm nearly sure I'll burn a few when soldering :D

[edit] 77° fuses not sold anymore :(
http://www.aliexpress.com/item/10pcs-lot-RY77-TF-77-Degree-Celsius-77C-10A-250V-Temperature-Thermal-Fuse/32577243105.html
I will order that next, from same seller, look like the same fuses, just 72°C which should be fine in our case.
http://www.aliexpress.com/store/product/20pcs-lot-RY72-TF-72-Degree-Celsius-72C-10A-250V-Temperature-Thermal-Fuse/1021664_32660871006.html

[Sacha Telgenhof]

Hi @aproxx , very nice module! Just one question: after studying the board I still not quite understand how an existing light switch needs to be connected. There are 3 connecters, one for AC and two relays. Where do I connect the light switch to?

Cheers! Sacha

[badmannen]

@Nca78 Thanks alot for the detailed info! really appreciate it. keep it coming pros and cons if any if you notice something

//Henrik

[dpressle]

@Soloam said:

Hello all, I finished my version of this idea! Thank you to @aproxx for the help! I used a ATMEGA328, this wil make it a bit cheaper. https://www.openhardware.io/view/83

I need some help validating the layout, most important the 220v traces and the capacitors used in the layout!

Thank you all

Is there any news on this design?

[Nca78]

@badmannen said:

@Nca78 Thanks alot for the detailed info! really appreciate it. keep it coming pros and cons if any if you notice something

//Henrik
You're welcome. I ordered 72°C fuses as in my previous link. Seller agreed to add one to replace the broken 77°C I received last week.

I received the varistors, ssd relays and regulators, all correctly packaged in padded envelopes. Not tested yet, I will update this post later if I see a problem, but I'm not sure how I can efficiently test the varistors...

http://www.aliexpress.com/item/Varistor-10D391K-10D-391K-VDR-10K391-Metal-voltage-dependent-resistor-50pcs-bag/1912418587.html

http://www.aliexpress.com/item/10pcs-bag-New-original-solid-state-relay-G3MB-202P-DC-AC-PCB-SSR-In-5VDC-Out/32260339179.html

http://www.aliexpress.com/item/Free-shipping-10pcs-lot-LE33CZ-LE33ACZ-TO-92-new-original/32591811172.html

[dpressle]

@Nca78 How is the LE33 working for you? i couldn't make it drive the NRF...

[Nca78]

@dpressle said:

@Nca78 How is the LE33 working for you? i couldn't make it drive the NRF...

As I said I didn't have time to test the last batch of components yet.
It's suprising as the LE33 is supposed to allow up to 100mA current, that should be enough for the NRF. Not sure I will use them any as I have some 3.3V nanos and also some 3.3V HLKs so I could bypass it.
I will test anyway and keep you updated.

[edit] All components (slow blow fuses, capacitors,...) received, I'm just waiting for the PCBs now. And for some time to test :)

[tonnerre33]

Hi,

can we install this module in a wall ?
Can we command shutters ?
Thx

[mr_const]

I updated source file for this module, so it supports MySensors 2.0 now and sends temperature data too. You can pick it at my github page. Total size for 'Arduino Pro or Pro Mini w/ ATmega328 (5V, 16 MHz)'
Program size: 13 396 bytes (used 44% of a 30 720 byte maximum) (2,78 secs)
Minimum Memory Usage: 614 bytes (30% of a 2048 byte maximum)

[Matt]

Hi Approx
Thanks for the effort here. I have all the bits except for the PCBs which were shipped a week ago so not far off.

[Nca78]

@tonnerre33 said:

Hi,

can we install this module in a wall ?
Can we command shutters ?

For the wall, that's the idea of keeping the 50*50mm size :)
For the shutters technically yes, but there are (at least) 2 problems :

• if you have the 2 relays on at the same time = 2 directions you will probably kill the motor, there is no hardware protection on this board to avoid that (one of the relays must have power only when the other one is in off state). This can be done in software so it's not blocking.
• if you want to be able to control the level/percentage of closing, you need to measure time from min to max position, to do that you need to measure current (when motor stop consuming current it means shutter has reached it's 0% or 100% position). But there is no current sensor on this board, so you either need to implement a manual calibration process (that will lose precision over time) or use only manual control.

I am planning to test it when I have some time, and when I receive the PCB.

[Nca78]

@dpressle said:

@Nca78 How is the LE33 working for you? i couldn't make it drive the NRF...

I just used one on a test board made on an Easy PCB, it's just powering the radio like on this board and it is all fine at the moment.

[mr_const]

@dpressle my experience shows, that this PCB works fine with LE33 when powered from mains, however nrf fails to receive data, when powered from FTDI through arduino.