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Thank you so much solved a major problem for me ;-)))))))

Hi Philo, Great Video! Thanks for posting. I was wondering how this circuit would work, or what changes would I need to operate it with 24v DC?

I would like to add a speaker to this for a simple piano design where would I place my speaker ?

using a 12v motorcycle battery, what would it take to get 10-20 watts output?

hi, is it possible to synchronize the two motors so they both start at some zero position and a full circle on the first one corresponds to a certain angle set up for the second one? (for a coil winding machine like this czcams.com/video/MXLx-M9mV3I/video.html

hey! I've made 4 audio circuits, your video of 386 is the only one to work. thank you very much for taking the time and effort to realize what people do without good explanation. in this circuit ..does the input have to come from a device or would a contact (piezo)mic work? thanks again you do just right

Thank You, thank you very much. That was REALLY good... 😌

hey men, why 3 resistors and 3 capacitors?

i need some help in arudino usin intel edison board. Please reply me when can i explain you my prob?

Hmm, did not know that Forest Gump is interested in electronics :) Great vid btw!

Best overview I've seen yet of how to configure a 555 mono. Clear AND thorough. As a newbie to electronics, it shows you WHAT to do and WHY. Tank you so much. I've subscribed.

really nice...thanks for this video..

thank you so much this video is very informative

I have an 8 switch component. Do you think I could try some things with that connected?

I was wondering how long it would take you to realize the ground wasn't connected.

2:00 sounds like the schematic police are after you lol!

This is the best tutorials for this timer !!!!!!!! Now what if you want to trigger with positive power what do you do to get that ? And I want to use 12/Volts for everything , next thing I want to configure time instead of changing capacitor ,

hi great tutorial, is it possible for you to explain how can i save position of a 3 servo motors moved by potentiometer and repeat the saved movement by pressing a button? thanks very much

Would this magnetometer work in a steel automobile ?

I want to ask a question. but before that i want to give you my problem: I was making a program with 1 switch button and 3 led, if i press the switch button it will produce a running light: and if i press the switch button again it will stop the running light. I tried using debounce but it became redundancy due to using of delay to run the light(LED) so pressing again the switch wont work tried using several syntax as container to avoid redundancy but still failed. hope you can help me. heres my CODE: const int sw1 = 2; //control for switch1 <<GOING LEFT>> const int sw2 = 3; // control for swtich2 <<GOING RIGHT>> int oldbutton = 0; int bstate; int bstate1; int last; const int ledstate= LOW; const int ledstate1= LOW; int reading; void setup() { pinMode(5, OUTPUT); pinMode(6, OUTPUT); pinMode(7, OUTPUT); pinMode(sw1, INPUT); pinMode(sw2, INPUT); digitalWrite(7, ledstate); digitalWrite(6, ledstate); digitalWrite(5, ledstate); } void loop() { bstate = digitalRead(sw1); reading =digitalRead(sw1); if (bstate == HIGH){ while ((bstate ==HIGH) &&(ledstate == LOW)){ digitalWrite(7, HIGH); delay(100); digitalWrite(7, LOW); digitalWrite(6, HIGH); delay(100); digitalWrite(6, LOW); digitalWrite(5, HIGH); delay(100); digitalWrite(5, LOW); } if ((bstate == HIGH) && (ledstate == HIGH)) { bstate == !bstate; digitalWrite(5,LOW); digitalWrite(6,LOW); digitalWrite(7,LOW); } } }

I'm building a green house where the user can control or set the desired levels of various parameters. the user interacts with the program via a 4x4 keypad.the program should display the status of the current values but when a key is pressed the user should be able to edit the values desired. i know how the sensors works but the main problem is that the program is not detecting my keypresses. code: #include <LiquidCrystal.h> // include the library code # include <Password.h> #include <Keypad.h> const int numRows = 2;//constants for the number of rows and columns in the LCD const int numCols = 16; int count = 0; LiquidCrystal lcd(12, 11, 5, 4, 3, 2);// initialize the library with the numbers of the interface pins const byte ROWS = 4; //four rows const byte COLS = 4; //three columns char keys[ROWS][COLS] = { {'1', '2', '3', 'A'}, {'4', '5', '6', 'B'}, {'7', '8', '9', 'C'}, {'*', '0', '#', 'D'} }; float humidity, temprature, moisture; // variables globally declared boolean light; byte rowPins[ROWS] = {22, 23, 24, 25}; //connect to the row pinouts of the kpd byte colPins[COLS] = {26, 27, 28, 29}; //connect to the column pinouts of the kpd Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS ); void setup() { Serial.begin(9600); lcd.begin(numCols, numRows); keypad.addEventListener(keypadEvent); lcd.clear(); lcd.setCursor(0, 0); lcd.print("LOADING"); for (int i = 0; i < 16; i++) { lcd.setCursor(i, 1); lcd.write(255); delay(170); } lcd.clear(); } void loop() { // THE PROGRAM SHOULD DISPLAY THE STATUS OF SENSORS UNTILL A KEY IS PRESSED keypad.getKey(); while (NO_KEY)//THIS DOES NOT WORK { lcd.print("hello");// EXAMPLE STATUS } } void keypadEvent(KeypadEvent eKey) { switch (keypad.getState()) { case PRESSED: Serial.println(eKey); delay(10); switch (eKey) { // though i am able to get in this part case 'A': lcd.clear(); // WANT USER TO ENTER A 4 DIGIT NUMBER WHICH CAN BE MADE AS SETPOINT OR UPDATES THE CURRENT VALUE lcd.setCursor(0, 0); lcd.print("Enter Desired"); lcd.setCursor(0, 1); lcd.print("HUMIDITY:");// THE USER SHOLD BE ABLE TO ENTER THE VALUE HERE WHICH WOULD BE UPDATED break; case 'B': lcd.clear(); lcd.setCursor(0, 0); lcd.print("Enter Desired"); lcd.setCursor(0, 1); lcd.print("TEMPRATURE:"); break; case 'C': lcd.clear(); lcd.setCursor(0, 0); lcd.print("Enter Desired"); lcd.setCursor(0, 1); lcd.print("MOISTURE:"); break; case 'D': lcd.clear(); lcd.setCursor(0, 0); lcd.print("LIGHT"); lcd.setCursor(0, 1); lcd.print("ON/OFF"); //BOOLEAN TRUE/FALSE break; } } } pease help

Thank you. Excellent tutorial. I'm going to check your other videos since this one was so clear.

Thanks!!!!!!!

lolz

Mr. Philo,I just came across your latching relay videos regarding relays and transistors in latching circuits. I will be building these on my breadboards soon. I just wanted you to know your explanations are very clear and informative......I'm a plumber so some of this stuff is 'Greek' to me. ... These electronic You Tube videos you have made are greatly appreciated......Thank You

nice explanation of schematic.

hey there!! i"ve got 8ohm, 30 watt speaker will this schematic do it perfect or i will need some improvements?? Thanx for help :) & offcoarse the Video

Hi, can you explain or chematic how to connect the mini microphone to Arduino? Thank you.

what arduino is this?

I have a bluetooth chip as my audio source. Could I connect that directly to pin 3 instead of the Potentiometer? If so, would I still need the 470pf capacitor from pin 3 to ground to isolate rf noise?

Great vid. I hope you don't feel I am missing the point of this great tutorial but do you know if it is possible to buy a selectable latching relay board such as this for multiple switches? I am seeking 12 switch circuit if possible. I am dealing with limited space so creating one myself is problematic. Thank you.

if it draws over 20A, or whatver your meter is marked as, will it damage the meter?

Thank you very much.

thanks.....It's help me much

very useful

Hello, I just finished the amplifier. It sounds better than other layouts. Very clear explanation and I could build it although I didn’t know anything about electronics. Thank you so much for your effort and teaching. I'd appreciate if you could teach us how to make it stereo.

Good tutorial, really clear and exhaustive. But I have a question. What do you think about making a request at the beginning of the loop, waiting for the answer whitout performing the first loop? If the request will be satisfied the first loop will be executed, if not, the loop is stopped. In my case: .... void loop() { // Wait for the user to press button A. buttonA.waitForButton(); // function to be performed } It works, but my question is, which of these methods requires less memory and power? Thanks,

hello,, what if i use a 12 volts for power supply,, is there any problem with that,, or there is a part or materials that need to replace?

Hi , you did great job here ,thank you . I have one question , how can I use number with minus sign. Thank you . Petr

That was an easy and effective method for me to understand the badly written concepts in my text book. Nicely done. Thank you.

Nice video, what is the your output pulse amplitude if 5V vcc is used?

i replace the 470uF cap with one 4700uF cap at the outpout and its sounds a lot of better and that at the possitive and negative with at 470pF

can we connect condenser mic as a audio source instead of any other source ?

Amazingly helpful. Thank you!

If this thing it's going to work, you have no idea of what a massive weight you just pulled off from my poor brain! Absolute masterpiece, thanks!

Great tutorial, thank for making it ! I have a question, what happen when you press multiple buttons at once? There is a way to make pressing multiple buttons all together null, or just achieve a similar result as to reset the circuit ? Thanks. Edit: I think i got my answer already on the middle of your other video, 2D, cheers ;)

Tho my amp didnt work id like to say this was a great tutorial, with simple to follow schematic

heey is there a way to count the steps ? I have stepper motors but no specifications , and these are also not online probably too old

Hi Philo Mech, I learned from JohnAudioTech on CZcams, that having separate ground paths for input, output & power that junction right at pin 4, ground, will greatly reduce if not eliminate pops, crackles, etc.. I have had good success using this method. C.

Great Job. Thnx Man