Iqbal Samin

Awesome! I just learned so many cardboard modeling techniques.Thank you.

Very well done. Feels really good to see Bengalis making such cool projects.I have a little suggestion. You could PID control for the line following. You'll be able learn PID control through it and your robot will follow the line much faster and accurately.

I don't have a 3D printer. Is it possible to make this without 3D printing? I think I will give it a try with plastic sheets.

That will let too much current flow through the resistor and damage it, may also damage your battery if it can't handle the current 4.2/3 = 1.4Amps

It will work much better with logic level MOSFETs such as:N-channel MOSFET: IRLZ44nP-channel MOSFET: IRLZ24n

Tried it on Aerofly RC Simulator, works like a charm.

Here's a code for 8 channels (not mine)https://gist.github.com/drtrigon/0458d5d3bb55c841c669dd02333c63dd

Please add more channels, and is it compatible with RealFlight and Aerofly?

I did on one of my modules. and the range got halfed! I didn't change my code. What did I do wrong? I cut the old antenna connection, I did solder it properly. I checked with ohm meter and it shows that the 2 antennas are shorted. It shows the same on the unmodified one.

122mm length PCB costs a lot more than a 100mm length PCB. Is it possible to make the PCB 100mm?

1. R9 is the load, not a resistor.2. There are two 100nF capacitors in the schematic. look closely. They are C1 and C2 on the top left corner, next to the voltage regulator.3. Where do you get these options? When burning fuse? If so, you don't need to burn fuse, you just need to burn the Arduino bootloader.

Remove this line too:#define F_CPU 8000000

I can not find MCP602. Can I use NE5532 or LM358?

As he said in the video, the output is inverted and not referenced to ground. So you can't just use a voltage divider (unless you want wrong results)A differential amplifier will make sure that the Arduino always reads the voltage potential between the positive and the negative output. That op amp is being used as an differential amplifier.Hope you get the point.Pirthul.

Can I use a NE5532 instead of NE5534?

This will work for DVI to HDMI converters because you are not cutting the digital pins and HDMI is digital.But this will not work for DVI to VGA converters because you are cutting the analog pins and VGA is analog.

This will work for DVI to HDMI converters because you are not cutting the digital pins and HDMI is digital.But this will not work for DVI to VGA converters because you are cutting the analog pins and VGA is analog.

Those capacitors looks like they're at the end of their life, I think you should change them, just to be safe.

The voltage of those capacitors should be higher than the supply voltage.

How did you get those big characters on your LCD?

I checked the R7. Its resistance "increased"! I guess this is because of overheating. I changed it and now my power supply works fine.Thanks you very much!

Hey, nice instructables!I made a similar power supply with the same 30V 3A linear power supply kit as yours. After assembly it worked just fine, I used it for about a month to power my circuits, charge batteries etc. But since yesterday, the current control is acting weird. Normally it used to go up to 3 amps, but now it goes up to 8 AMPS! It blew the fuse that was connected on the secondary side of my 24V AC transformer. Can you please help me? I don't why it's happening.BTW, my voltage control is working. Current control is also working just fine, but it goes up to 8 amps instead of 3 amps, that's the only problem.Thanks you.- Prithul

It doesn't matter, it determines which way you have to rotate (clockwise/counter clockwise) to increase your voltage/current.You can swap them to change the direction.

Datasheet says 15 voltsThanks

It will work, but it will get very hot since it has a high drain-to-source resistance. It will also cause some voltage drop, so the amount of current calculated by the op amp might not be equal to actual current flow, so use an ammeter to measure the current flow (I might be wrong about it)

Oh, sorry. Pin 1 isn't a PWM pin. Please change it to 5/6. (Pin 5 and 6 can provide higher PWM frequency)

Yeah!

Sure, but the sound will ne same as a small speaker

You can increase the discharging current by increasing the supply voltage and using a MOSFET with a lower Gate-threshold voltage (Vgs).But remember, more discharge current = more heat = more danger! BE CAREFUL!!

It might be possible, but, I don't think you should discharge a battery at 70A ?

Sorry, this code is not mine. It's written by GreatScott. I just changed it a little bit to make it compatible with ATmega328P.

This code is for ATmega328, not ATtiny13. If you want to use it on ATtiny13, you'll have to study its datasheet.

I found a solution. If you want to make it with Arduino UNO, or any other Arduino with ATmega328, use this code:int pwm = 1;int potinput = A2;int feedbackinput = A3;int potinputval;int feedbackinputval;int pwmval;void setup() { TCCR0B = TCCR0B & 0b11111000 | 0x01; pinMode(pwm, OUTPUT); pinMode(potinput, INPUT); pinMode(feedbackinput, INPUT); digitalWrite(pwm, LOW); pwmval = 0;}void loop() { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); while (potinputval > feedbackinputval) { if (pwmval == 230) { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(...

I found a solution. If you want to make it with Arduino UNO, or any other Arduino with ATmega328, use this code:int pwm = 1;int potinput = A2;int feedbackinput = A3;int potinputval;int feedbackinputval;int pwmval;void setup() { TCCR0B = TCCR0B & 0b11111000 | 0x01; pinMode(pwm, OUTPUT); pinMode(potinput, INPUT); pinMode(feedbackinput, INPUT); digitalWrite(pwm, LOW); pwmval = 0;}void loop() { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); while (potinputval > feedbackinputval) { if (pwmval == 230) { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } else { pwmval = pwmval + 1; analogWrite(pwm, pwmval); potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } } while (potinputval < feedbackinputval) { if (pwmval == 0) { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } else { pwmval = pwmval - 1; analogWrite(pwm, pwmval); potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } }}

Here's the code for Arduino UNO or any other Arduino with ATmega328 chip:int pwm = 1;int potinput = A2;int feedbackinput = A3;int potinputval;int feedbackinputval;int pwmval;void setup() { TCCR0B = TCCR0B & 0b11111000 | 0x01; pinMode(pwm, OUTPUT); pinMode(potinput, INPUT); pinMode(feedbackinput, INPUT); digitalWrite(pwm, LOW); pwmval = 0;}void loop() { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); while (potinputval > feedbackinputval) { if (pwmval == 230) { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval =...

Here's the code for Arduino UNO or any other Arduino with ATmega328 chip:int pwm = 1;int potinput = A2;int feedbackinput = A3;int potinputval;int feedbackinputval;int pwmval;void setup() { TCCR0B = TCCR0B & 0b11111000 | 0x01; pinMode(pwm, OUTPUT); pinMode(potinput, INPUT); pinMode(feedbackinput, INPUT); digitalWrite(pwm, LOW); pwmval = 0;}void loop() { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); while (potinputval > feedbackinputval) { if (pwmval == 230) { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } else { pwmval = pwmval + 1; analogWrite(pwm, pwmval); potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } } while (potinputval < feedbackinputval) { if (pwmval == 0) { potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } else { pwmval = pwmval - 1; analogWrite(pwm, pwmval); potinputval = analogRead(potinput); potinputval = map(potinputval, 1023, 0, 255, 0); feedbackinputval = analogRead(feedbackinput); feedbackinputval = map(feedbackinputval, 1023, 0, 255, 0); } }}

It should work, but be careful!

That "Huzzah" is not a typo.See this: https://www.adafruit.com/product/2471

That "Huzzah" is not a typo https://www.adafruit.com/product/2471

Very nice! How about adding alarm functions to it?

I wanna use it with my Arduino UNO. However, I was able to set the right registers to get a high frequency of 62.5 KHz. Thanks!

I wanna use it with my Arduino NANO. However, I was able to set the right registers to get a high frequency of 62.5 KHz. Thanks!

I get this error when I try to compile for Arduino UNO:ATtiny85BoostConverter:12: error: 'TCCR1' was not declared in this scopeTCCR1 = 0 << PWM1A | 0 << COM1A0 | 1 << CS10;^ATtiny85BoostConverter:12: error: 'PWM1A' was not declared in this scopeTCCR1 = 0 << PWM1A | 0 << COM1A0 | 1 << CS10;^ATtiny85BoostConverter:13: error: 'PWM1B' was not declared in this scopeGTCCR = 1 << PWM1B | 2 << COM1B0;^exit status 1'TCCR1' was not declared in this scopeCan you modify the code for Arduino UNO Please?

Hey ARK4579!Really cool instructable! I've tried to do this with NodeMCU flasher. I spent 4 hours on it, but I couldn't flash it. Then I found your instructables and it worked like a charm! Thanks a lot. But I don't understand what this line means:"cannot open init.lua"Is this a problem?

Hey Nilesh,I'm glad you asked. You can use a microphone at the input. But you have to use a transistor at the input.Greetings,Prithul