Assalamualaikum Ahmed bro. Your videos are awesome and best. So much knowledge and info. Thanks for all the hard work and effort. Allah bless you bro. Love from Nepal
Thanks for a great walkthrough of the module! Would be really nice if you could try it out with iPhone as searching for information it looks like this only works with Android. Apple did not implement that many of the bluetooth protocols :/
Hi dear, you are great, could you make another tutorial on how to change bluetooth pairing password for 12V DC 2 Channel Bluetooth Wireless Relay which provides this feature? Thanks so much for your work.
Module bien Pratique , je le connaissais pas celui la ! intéressant pour les petits concepts! Merci , Toujours aussi bien ta chaine , pour les modules chinois je la regarde toujours en premier car les infos sont toujours complètes.
Regarding the common AT command over TTL serial port of BTL device as below: (1)Test : AT (2)Reset: AT +RESET (3)Get version: AT +VERSION (4)Restore default: AT +DEFULT (5)Inquire bluetooth address: AT +LADDR (6)Set/Inquire device name: AT +NAME,such as send ”AT+NAMELCTECH ” , and then send “AT+RESET” can set the device name as LCTECH (7)Set/Inquire password: AT +PIN, such as send “AT+PIN8888” can set the password as 8888 For more AT command details, please see the BLT device datasheet (SPP-C AT command).
awesome video thank you...i am having trouble getting the coding right...I have device paired ok...but i am unable to add the on/off functions on the buttons...Also unable to get the relay to work..no red led....any help please.
My module is very similar to yours, it uses Bluetooth version 2.1 -EDR and nither my PC nor my iPhone is able to recognize or use this 2007 version. Do I need an Android smartfone?
Hi, great review of the product. Question: do you know if one can connect multiple devices to this relay at the same time, ie, switch it from you phone, and then directly after, switch it from your tablet for example. Thank you
good day...i would like to ask if there's available apps that can ON the relay or within range and out of range, relay is automativally OFF and automatically ON if range is within 10 meters thanks.
I am using a 12-16V lithium battery pack. I have the Relay connected to the bluetooth app, and I can see the red light turning on and off.. but my DC Load is not turning on and off.. I've tried a few different wiring combinations.. but my light is turing on and off. What is the correct wiring for a DC load?
Does the relay click? If you don’t hear click sound of relay then it is not turning ON. Make sure relay clicks. If relay click and it does not turn ON your load then the relay is defective.
The relay click's 100% and I see the LED light up on the PCB. However, how do I know if I have the DC load wired correctly? To the DC load from the relay I would think that from NO Terminal - red (positive wire to LED light) and from COM Terminal - black (negative wire to LED Light) @@robojax I tried a few combinations.. but the light is not turning on.. Do I need an extra wire to connect back to the ground of the battery?
Okay.. my mistake entirely.. I need to go back to Electronics School 101. I forgot that fundamentally a relay is a basically a switch where you are using a LVPS (in this case 12V) to energize a switch to turn on a circuit that is high current or high voltage. I was originally trying to use this as a bluetooth switch and thought that once the relay was "made" that the 12 V from the power supply would flow through to the other end to energize the load.. but that was completely stupid on my part.. the whole idea of a relay is to keep circuits seperate for safety purposes. What I am trying to do is use these 12V lithium battery packs that I have to power exterior work lights around my camp, and to turn them all on and off with my phone remotely. So I can turn the outside lights off when I go to sleep at night from inside my tent. So to get this working correctly on my bench I pulled out a 12 V power supply to power the circuit board.. and then connected my DC circuit on the relay end. It works. But what I want to do is have the battery pack supply the load AND the bluetooth circuit board simultaneosly.. So I should just need to set up a parrellel circuit from my battery pack, one set of the 12 V leads will go to power this PCB, and the other set will be connected on the DC LOAD LED side where the relay is going to act as my on/off switch. There shouldn't be any issues with this right? Both sides will get the same Voltage in a parrallel circuit, the PCB side will only draw 50 or 100 mA of current, and the LED LOAD SIDE (I think the 42 LED light has a spec. of 2.58A.) Is this correct? @Robojax
it needs 50mA when waiting. 150mA when relay is ON. so you do the math. if your battery is 2000mAh then 2000mAh÷150mA= 16.6h 16.6 hours. but that is when relay is ON. if it is OFF it would last longer 3 times more.
From the Amazon reviews, they don't appears to be super reliable. I'm looking for a 'set and forget' type of relay since for my vehicle application, mine would be hard to get to for where I'm placing mine. Do you know of any other, more reliable bluetooth options, perhaps a solid state relay? I haven't seen any wireless (bluetooth) solid state relays, but I''ve only been searching for a few hours.
Hello, You can use Arduino to read almost any DC voltage and take action. this video is on how to read DC voltage czcams.com/video/t8xwrVj2aFs/video.html and this is how to control a relay to turn a load or anything you want to control czcams.com/video/58XWVDnB7Ss/video.html if you are new to Arduino then this is a 30 minutest course czcams.com/video/Mbb2xa1WcRM/video.html or Arduino Step by Step Course (over 100 lectures) Starts here czcams.com/video/-6qSrDUA5a8/video.html
The bluetooth is connected in my phone but the command A0 01 01 A2 is ON and A0 01 00 A1 is OFF not working to my phone, no reaction the red light only blue ,do you have any command sir ? Please help me sir , my suply is 12v .100amp thanks to reply me sir🙏🙏🙏
it must be the compatibility issue. Some apps are set such that they ignore older bluethooth protocols. I am not sure how but there should be an option to set the compatibility in either your phone or the app itself. you may do some Bing/Google search.
Hi, it means pairing has not happened. search videos on pairing Bluetooth . Here is how to find Specific CZcams Video in a channel bit.ly/findCZcamsVideo
I'm very thankfull to your video sir..because my bluetooth switch devise is allready working now...👍👍👍
love from Kashmir ❤️.....
thank you very much, regards from Mexico
You are welcome!
Thank you so much, I bought 2 module bluetooths 2 months ago but I couldn't control them.Now I can.
Great 👍
Assalamualaikum Ahmed bro. Your videos are awesome and best. So much knowledge and info. Thanks for all the hard work and effort. Allah bless you bro. Love from Nepal
Love from Peshawar Pakistan.
Thank you. Greetings from Canada
Thank you for these great videos you make, you really help us new to Arduino and learning as well.
You are very welcome. I am glad my videos can help.
Great videos !
Ii am looking forward to completing a small project using the information in this excellent video.
Good luck!
👏👏👏
Awesome explainer Mr. Ahmad! Your incredible attention to detail is so helpful. Thank you!
Thanks for a great walkthrough of the module! Would be really nice if you could try it out with iPhone as searching for information it looks like this only works with Android. Apple did not implement that many of the bluetooth protocols :/
Very good explanation, thank you Robojax
You are welcome. The best thank you for me is to subscribe to my channel Thank you.
Very much appreciated....thank you!
Hi dear, you are great, could you make another tutorial on how to change bluetooth pairing password for 12V DC 2 Channel Bluetooth Wireless Relay which provides this feature?
Thanks so much for your work.
Thanks great video ! so many idea's for the device
Glad it was helpful!
Appreciate the effort here
thanks for running through that.
Module bien Pratique , je le connaissais pas celui la ! intéressant pour les petits concepts! Merci , Toujours aussi bien ta chaine , pour les modules chinois je la regarde toujours en premier car les infos sont toujours complètes.
Je suis content que vous aimiez mes vidéos. Salutations du Canada. Être prudent.
Nice 👍👍
I have module with 2 devices. What is the conamd for the other device connected?
U are the best!
very well explained :)
So nice thanks
Regarding the common AT command over TTL serial port of BTL device as below:
(1)Test : AT
(2)Reset: AT +RESET
(3)Get version: AT +VERSION
(4)Restore default: AT +DEFULT
(5)Inquire bluetooth address: AT +LADDR
(6)Set/Inquire device name: AT +NAME,such as send ”AT+NAMELCTECH ” , and then
send “AT+RESET” can set the device name as LCTECH
(7)Set/Inquire password: AT +PIN, such as send “AT+PIN8888” can set the password as 8888
For more AT command details, please see the BLT device datasheet (SPP-C AT command).
can I use a simple bluetooth button instead of the phone to do the exact thing? if yes, how would that bluetooth button connect to the relay?
Great video. Are there any other codes such as a delay code. I would like to press a button that turns on a relay for 5000mS and then turns it off.
Amazing video ,bud any chance to add a timer function ?
Can we take out the Bluetooth from old cellphone to make this work????
awesome video thank you...i am having trouble getting the coding right...I have device paired ok...but i am unable to add the on/off functions on the buttons...Also unable to get the relay to work..no red led....any help please.
then you gotta find the exact code that turns it ON. Contact the seller or look at the product page.
Super bro ❤️
Thanks for for this wonderful 👍 tutorial ....pls can this relay be controlled remotely from anywhere in the world 🌎
When we mention Bluetooth it is about 10m distance.
thank you for this video. Is it possible to set the app up for a momentary button. For example it only works when the button is held. thank you!
Hack: Increasing the time and adding reset switch to 555 Relay Timer
czcams.com/video/LDLPUpU64J4/video.html
My module is very similar to yours, it uses Bluetooth version 2.1 -EDR and nither my PC nor my iPhone is able to recognize or use this 2007 version. Do I need an Android smartfone?
It is the matter of settings of the phone to detect it. I am not sure. Won’t hurt if you try Android device.
I have a 2 channel version. The hex code you gave works great on one of the channels. What hex code do I use on the second channel?
contact the buyer or see the web page you bought it from.
A0-01-01-A2
A0-01-00-A1
A0-02-01-A3
A0-02-00-A2
Use the XOD Programming? 😎👍
How to switch off if out range
Is there any way we can add a physical button to manually trigger the switch on or off in parallel to the bluetooth?
I have tones of videos showing push button switch to turn on and off lights . Just search my channel
I want to use in inching mode jog (0.5 sec) . Is there any hex code or option in App
thank you very much , how to time it? please ?
You are welcome. The best thank you for me is to subscribe to my channel. Thank you.
Hi, great review of the product.
Question: do you know if one can connect multiple devices to this relay at the same time, ie, switch it from you phone, and then directly after, switch it from your tablet for example.
Thank you
This is just a switch You can connect things in parallel so all of them can be turned in or off.
good day...i would like to ask if there's available apps that can ON the relay or within range and out of range, relay is automativally OFF and automatically ON if range is within 10 meters thanks.
Good day. Not possible to use it that way.
I am using a 12-16V lithium battery pack. I have the Relay connected to the bluetooth app, and I can see the red light turning on and off.. but my DC Load is not turning on and off.. I've tried a few different wiring combinations.. but my light is turing on and off. What is the correct wiring for a DC load?
Does the relay click? If you don’t hear click sound of relay then it is not turning ON. Make sure relay clicks. If relay click and it does not turn ON your load then the relay is defective.
The relay click's 100% and I see the LED light up on the PCB. However, how do I know if I have the DC load wired correctly? To the DC load from the relay I would think that from NO Terminal - red (positive wire to LED light) and from COM Terminal - black (negative wire to LED Light) @@robojax I tried a few combinations.. but the light is not turning on.. Do I need an extra wire to connect back to the ground of the battery?
Okay.. my mistake entirely.. I need to go back to Electronics School 101. I forgot that fundamentally a relay is a basically a switch where you are using a LVPS (in this case 12V) to energize a switch to turn on a circuit that is high current or high voltage.
I was originally trying to use this as a bluetooth switch and thought that once the relay was "made" that the 12 V from the power supply would flow through to the other end to energize the load.. but that was completely stupid on my part.. the whole idea of a relay is to keep circuits seperate for safety purposes.
What I am trying to do is use these 12V lithium battery packs that I have to power exterior work lights around my camp, and to turn them all on and off with my phone remotely. So I can turn the outside lights off when I go to sleep at night from inside my tent.
So to get this working correctly on my bench I pulled out a 12 V power supply to power the circuit board.. and then connected my DC circuit on the relay end. It works. But what I want to do is have the battery pack supply the load AND the bluetooth circuit board simultaneosly.. So I should just need to set up a parrellel circuit from my battery pack, one set of the 12 V leads will go to power this PCB, and the other set will be connected on the DC LOAD LED side where the relay is going to act as my on/off switch. There shouldn't be any issues with this right? Both sides will get the same Voltage in a parrallel circuit, the PCB side will only draw 50 or 100 mA of current, and the LED LOAD SIDE (I think the 42 LED light has a spec. of 2.58A.)
Is this correct? @Robojax
Any idea if this could be powered by a battery and if so, how long?
it needs 50mA when waiting. 150mA when relay is ON. so you do the math. if your battery is 2000mAh then 2000mAh÷150mA= 16.6h 16.6 hours. but that is when relay is ON. if it is OFF it would last longer 3 times more.
From the Amazon reviews, they don't appears to be super reliable. I'm looking for a 'set and forget' type of relay since for my vehicle application, mine would be hard to get to for where I'm placing mine. Do you know of any other, more reliable bluetooth options, perhaps a solid state relay? I haven't seen any wireless (bluetooth) solid state relays, but I''ve only been searching for a few hours.
solid stare relays are for AC. So you need electronic switch which uses MOSFET to turn ON or OFF something. it would have current and voltage rating.
@Robojax have you found one? I am looking for a 12 volt 4 switch that can run on A/C
how can i turn on and off the bk 3431s pls reply
searched " bk 3431s" and could not find anthing
Does this chip come as shown
yes this is the relay I filmed. I did not add or remove anything from it.
Can you change passcode
Can I control the module from Iphone ? which app to use for iphone?
The Option is for android only .
Plz it's working distance?
when we say Bluetooth, then it is standard for all bluetooth. just google it and see how far your headphone or bluetooth keyboard works.
Does it remember state when turned off?
I belive no.
@@robojax thanks for your reply!
is there an existing script that allows the phone to turn the relay on and off based on it's battery level?
Hello, You can use Arduino to read almost any DC voltage and take action. this video is on how to read DC voltage czcams.com/video/t8xwrVj2aFs/video.html
and this is how to control a relay to turn a load or anything you want to control czcams.com/video/58XWVDnB7Ss/video.html if you are new to Arduino then this is a 30 minutest course czcams.com/video/Mbb2xa1WcRM/video.html or Arduino Step by Step Course (over 100 lectures) Starts here czcams.com/video/-6qSrDUA5a8/video.html
Can we use this in a bike ?? To igniton it on ?
of course you can.
@@robojax sir if want to … turn on the headlight or things like that .. can i do that?
Sir my relay modules not working this hex code my module ic bk3431s please send me this ic hex code
Contact the seller
Sir please help me the command is not working to my module
What is the problem? Does Bluetooth get connected or there is no connection. Please Ty your phone to get connected.
The bluetooth is connected in my phone but the command A0 01 01 A2 is ON and A0 01 00 A1 is OFF not working to my phone, no reaction the red light only blue ,do you have any command sir ? Please help me sir , my suply is 12v .100amp thanks to reply me sir🙏🙏🙏
What is the max distance this relay works with?
Bluetooth range is 10 meter
@@robojax thanx!
How to know HEX Code?
When you buy the product . The you should get it .
It does not pair with my phone via Bluetooth
it must be the compatibility issue. Some apps are set such that they ignore older bluethooth protocols. I am not sure how but there should be an option to set the compatibility in either your phone or the app itself. you may do some Bing/Google search.
Pls help me sir my module not working
“Not working” is not enough. You gotta explain.
@@robojax ok... Sir
Where do I get my on off code?
@@robojax sir pls send your whatsapp number
Pls reply me sir
It will not let me pair it tells me that I need an app to connect
Of course you need to install the app
what app for ios please?
don't know.
Can i change the bluetooth password instead of 1 2 3 4?
no. you can't.
@@robojax this makes my relay vulnerable. Isn't it?
Yes you can do it, but you need TTL serial port Interface. You will find the manual if you search for Shenzhen LC Technology Bluetooth Relay Module
Hi bro, i got one of those but the relay not showing while trying pairing it.. blue light is flashing on the relay but nothing shows on phone? Why?
Hi, it means pairing has not happened. search videos on pairing Bluetooth . Here is how to find Specific CZcams Video in a channel bit.ly/findCZcamsVideo
@@robojax i know tjat pair didnt happend! That is the problem! I cant found it in bluetooth list.
Ma per fare pulsante?
non ha mostrato di fare un pulsante il video? l'app viene fornita con il pulsante e tu la personalizzi.
Using any app ❓️
Please link
why link? I have shown how to search and find the app.
@@robojax now good👍🏼👍🏼
Before not work
@@robojax Your video was very helpful
Hello! To be able to change the password, is it possible?
No. The code is embedded.
please gift me ths
if you were my neighbor, you could come and get it. but shipping it from Canada would be 4 or 5 times the price of this module.
@@robojax Thanku so much.....must say i love yokur videos....keep going