Saw the same video on Greatscott but honestly, you explained it better and at a slower pace. The less use of electrical jargon helps to understand a hobbyist like me. Thanks a lot and keep it up.
I totally agree. Great Scott went into way too much detail. But like Nitesh Patel said you did a much better job at explaining to someone like me! Where and how can I order a couple of PCB's just like yours? I'd like about 10 of them if possible
I can use the same for controlling ceiling fan speed as well, isnt it? Sorry I am a very beginner.. One question.. Here you are reducing AC voltage without transformer. Is it good or bad approach?
Hellow sir.... I am confused about the pin no 2...and what is the usage of pin 2Sw?? Please also explain(( // attach Interrupt at PIN2...)) this is copied from your code
beautiful. i'm an electronic enthusiasts too but you're way above my knowledge. pls add into your circuit an ir remote control circuit so that aside from the trimmer we can also use an ordinary remote control to adjust the brigthness of the lamp. Thanks .
I have some questions? This circuit reduces electricity consumption? Or the rest wasted? is circuit completely off while sending zero voltage from arduino?
Explanation is really good. But can you tell me the specific reason for selecting 0.2 ms margin from left side & 2.8 ms margin for right side? Why such uneven offsets?
Hi, Tutorial is very nice i got in single watch. my doubt, can't we eliminate bridge rectifier with 47k resistor at source power to MCT2E , what happen if we directly connect source power to MCT2E.
Hello sir, First of all you are the best i would like to ask you that the ac supply here we are talking about is 220 volt ac or with any step down transformer?
Is there a circuit that does not require the feedback from the zero crossing signal in order to dim the power? I haven't been able to find a PCB anywhere that is controlled by simple pwm signal and just change the duty cycle of the triac to average out the current. I want to use a CNC shield and GRBL firmware on an arduino and then put a rectifier and filter circuit to get between 0 - 110VDC output to the spindle motor, but the firmware does not support zero crossing feedback signal from the motor. I can do it with an SCR controller and a potentiometer, but I want to use pwm from the arduino.
Very good! But on the Triac is not connected an RC snubber... it's important, because the lamp is a "little" inductive load. You can use a snubberless Triac, like BTA08-600BW or similar instead of solder a RC filter between Mt1 and Mt2 of the Triac. Best regards from Italy!
Sir plz help, Sir me esp32 lagane ka soch raha hu usme 5 volt ka option nahi hai 3 volt ka hai or BTA41 triac lagane wala hu to resistor kon konse chamge karne padege plz help kr dena pure din se research kr raha hu
I made this circuit, the ZVC detection & Pulse output to MOC3021 works fine, but when connected with the Load (Lamp) it starts flicker at low voltage.. I think RC filter will require at load and Mt1 & Mt2.
How to change the input parameter to dimming the lamp, i see that in void acon on the first line "delaymicrosecond(x)" , the x parameter value start from 200 to 7200. But how to change the parameter value from 0 to 100? Please help
I totally agree. Great Scott went into way too much detail. But like Nitesh Patel said you did a much better job at explaining to someone like me! Where and how can I order a couple of PCB's just like yours? I'd like about 10 of them if possible
hi thanks for the vid, somehow it cannot be compiled on my arduino ide. it said that theres error in compilling for board Mega2560. could it happen because theres library needed? please advice. thanks
I have been trying to do this project with Node MCU in the hopes of using my Blynk app. Have you ever considered using Blynk? I’m interested to know what you think about Blynk. Have you done any projects using Blynk?
Sorry, sir, I want to ask... is this for 110 or 220? Please provide information in the video. I'm from Indonesia with 220. What about component sizes? Does it give 2x the value, for example R47K 1 WATT becomes 100K 2 watts and 1K becomes 2K and 330 ohms to 1K
I'm wonder if this circuit would work essentially the same with a different, 60 cycle, AC voltage. It seems like it should. I'd like to build a similar device for lower voltage; say 0-20 VAC
Zero Volt Detector optocouplar is getting really low current from the mains. Like 2 milliamps at 220 volt and much low ant lower voltages. I am not sure if the optocouplar turns off at zero volt. It seems the optocouplar turns on/of at much higher volt rather than near zero crossing. Not sure if I am missing something.
i couldn't get an MCT2E so i used a PC817, and used a BT151 instead of BT136. IT's not working. My bulb doesn't even light up. AND also couldn't find 47k 1W resistors, so i used 47k 0.3w resistors. I KNOW THATS A LOT OF MODIFICATION, but i need help please
so instead of the potentiometer, you will take an output of a PID controller dependent on the error signal "the difference between your preset temp and the sensor reading" .. you can do it.. nice idea..
so just a general question, why do we use the method of reducing the ON time to reduce the delivered power instead of scaling down the signal amplitude? same question applies in PWM, we reduce the ON time in order to reduce the equivalent DC value ... so why ?
@@techiesms why do u often use the 3 relay system in your home automation project then ? , this triac dimmer has to have some good cons that u don't use this .
Can you make a circuit using an opamp instead of a full bridge rectifier, this is just to have information of using an opamp rather than a full bridge rectifier. "big resistors"... can you please state what are the resistor values... come on man people are not kids, you don't need to say "bigz resistors", you could've just said 1 watt or 1/2 watt resistors. 1 period of my AC source is not a perfect 20ms, but rather 16.65ms. You're the only indian person that actually knows how to utilize what you have learned, best explanation on triacs and how to use it.
same project if we use ultrasonic sensor in place of potentiometer and when person come near to ultrasonic led glows 100% and when goes far it goes 25% help to make me like this
koyyala saipreetham I tried a similar project with the node MCU and I got a lot of Flicker. The same code worked extremely smooth with the Arduino Uno. I’m not really sure what I could’ve been doing wrong.
@@harshilshah812 You Need to add a snubber circuit(I think). Like this one cdn.instructables.com/FNE/K1HI/HLA110VM/FNEK1HIHLA110VM.LARGE.jpg?auto=webp&fit=bounds
Sir,as always I admire your work but sir can you make a dimmer without potentiometer.Hope you will reply this as the previous one,❤️ 3k from your follower.
