Arduino Traffic Light Tutorial

[@Beni-c4b]

thanks man you really are a life saver I am going to have an exam in my embedded class at 8:30 and watch this video at 7:00 I've got a lot from this. Now my exam will be well done!

[@wag-on]

I remember doing this in primary school in 1985 on a C64 computer with some external device attached.I had to add up the binary values to have the lights switched on/off. I had it how you've got with 2 lights immediately swapping but the teacher got me to modify it so both lights were red before either set proceeded to green. Loved it - just wish I knew what that gadget was called?

[@wannarockful]

a microcontroller SDK

[@shmurga]

I’m sorry but you didn’t #ratio

[@AKGaming-sr5qm]

Where u belong to means which country 😅

[@reinsaris]

8:10 when i compile changeLights()" on line 22 gives an error 'expected ')' before ';' token'. does anyone knows how to fix this?

[@MakeUseOf]

Have you ended all lines with ; ?

[@reinsaris]

MakeUseOf I found out what i was doing wrong, after an earlier ‘{‘ I didn’t close it. Thank you for your reply!

[@AviationMaker]

red and yellow not turning on on sametime

[@christiancasasos2771]

yellow and red turn on before the green turns on

[@hadireg]

nice video. for the dual traffic light as done so far, a simple wiring G1 with R2 ; O1 with O2 ; R1 with G2. the ports can still handle the current I guess.

[@MakeUseOf]

Nice. Yeh, you can easily drive quite a few LEDs from a basic Arduino. Check out our ancient LED cube project: kzbin.info/www/bejne/qqK6cnZqndpqpM0

[@guruprasadkulkarni635]

how can i add another 4 led to make traffic signal?

[@brotherandsisterA.K]

I don;t know but it is not working with switch

[@AKGaming-sr5qm]

Very good ur good teacher bhudau 😂

[@IOTmug]

here I am it is me: ) Thanks for creating video about me :)

[@davidd2661]

i made it myself and it worked :)

[@ahmedkahie6009]

Nice Video, but do you know how to make a junction with four traffic lights. I have suceed with two lights but i don't know how to make with four.

[@MakeUseOf]

Wouldn't that just be another set of each lights? Just a case of adding more LEDs to the same pins, you wouldn't need to adjust the coding, unless you wanted specific code for turning left/right stages?

[@ahmedkahie6009]

Thank you for the reply. Two are in a row and two in the bottom. I need to know how to make right left stages

[@ahmedkahie6009]

@MakeUseOf The code only works for two traffic Lights

[@louisferreira1012]

how does the arduino board know to start with only the green pin at high and then all other pins low for 15s???

[@That_0ne_Guy]

because of magic

[@pranabdeka209]

Can I buy this kit online

[@habibsaliu6208]

my red and green come up at d same time how do i fix dis

[@galileib08icasiamcyruzstev45]

You said 10 kohm resistor at 6:07 but the color band in the picture diagram show only 1 kohm resistor (brown,black,red)... 10 k ohm resistor should be brown, black, yellow

[@darwinbelliard9664]

does the code work on Matlab?

[@onnio7998]

You can make a counter feom 1 to 4, one up every 5 seconds for example. Then say that green is on when counter is 1, yellow is on when counter is 2 or 4 and red is on when counter is 3.

[@MakeUseOf]

That's a good approach!

[@stephanfouche7374]

Can you pls do a fading light video

[@alifsaifuddin6192]

why use 6 resistor 220 when u just use 4 resistor in the video

[@funasfriend150]

Could we extend the time duration of light

[@AnthonyGoodley]

I just bought a real traffic light. As in a full size real stoplight. Could code like this be used to control the lights so that it doea more than just display all the lights on all the time?

[@MakeUseOf]

In theory, yes, but it depends on how your traffic light is wired up. If it designed to show them all at once, it could be that there's only a single light source in there, with three different colored lenses. Alternatively, you could wire up your own LED light sources behind each section?

[@AnthonyGoodley]

@@MakeUseOf I'll be picking it up in a few hours. I'll dig in and explore it more soon. I'm guessing it has 3 different light sources and that someone did a bit of rewiring so that all 3 lights stay on constantly.

[@luomnguyenvan1479]

Code ??

[@flowerdefknows]

i remember doing this back in year 7

[@dane7205]

I followed your video & your written version. The Traffic Lights worked, until I installed the button & modified the sketch. Getting an Error Message "Error compiling for board Arduino Nano". I'm using a Arduino Nano. Any thoughts? Please

[@josevaldivia9908]

Could you connect this to an actual set of light bulbs and have it do the same thing?

[@MakeUseOf]

Sure, but you'd need a relay if the lightbulbs are running on AC power, and I wouldn't suggest playing with AC power if this is your first Arduino project!

[@BrianJennings-e8r]

I manage to write the code for the two traffic lights and a single button to control them, took me a while to sort the code out though...

[@irinaktersnigdha5083]

Please provide the source code

[@MakeUseOf]

Apologies, our theme broke the source code. Please check the link in the description in a few days, it should be working again soon.

[@nickhale2900]

I would love to create something along those line for a model railway signal triggered by an IR obstacle sensor but I have not got a clue how to modify the code.

[@MakeUseOf]

This was my first project, having never touched an Arduino before. It's easy once you dive in!

[@MelinyanisoMapi]

Question, can the same logic work for an station indicator e.g Indicator light change to Red, green or yellow based on a on a DB field, my db is MSSQL, i want to do this project and looking for some inspirations

[@official_prxalloteyezhpdsi6009]

Thank you very much

[@enzo991_]

I know this is probably unrelated, but I've been trying to find a tutorial for a Verilog code that does this exact same thing, simulate a single traffic light using the LEDs on the FPGA board. Do you have any idea where I can find such a tutorial ?

[@thad4342]

AllInTheManual I’m looking for that as well

[@JerryKillian]

I have the Elegoo Uno R3 starter it as well. However, I had some issues with the code. For some strange reason, the lights were not operating as described in the code. I ended up having to put the OPPOSITE values for on and off. example: void changeLights(){ // green off, yellow on for 3 seconds digitalWrite(yellow, LOW); digitalWrite(red, HIGH); digitalWrite(green, HIGH); delay(3000); If I did not enter the values of each pin, the LED would stay on if I wanted it off. I had hand-typed the code as you have it on your website, copied/pasted as well. but only got the desired results when I changed the values as given.Also, this always starts with yellow every time. I know, right? Strange, but true.

[@shehnazmasarweh1526]

I use the switch button for it And for code the “if” statement method

[@BlessingMaripita-vu7tv]

I need help people please

[@monstrousdemon4565]

👍🏼

[@monstrousdemon4565]

👍🏼😡

[@dlegendarypro]

lmao copyright