Great little project, simple and very effective. so many others similar but none work as easy as this, nice one!
@darktherapy
12 жыл бұрын
Very nice work :0)
@CarlosFilmagem2008
6 жыл бұрын
Show!!! Muito bom!!!!
@deshraj9633
6 жыл бұрын
thanx man
@bestimmaa
11 жыл бұрын
Hey Michael, What do you mean by "you don't see the emitter"? The laser diode (taken from a cheap laserpointer) is connected to PIN13 (laserPin). The code for enabling the laser and reading the brightness from the photoresistor: //switch laser on digitalWrite(laserPin,HIGH); //mesasure light lightLevel = analogRead(0); // read from PINA0 lightLevel = map(lightLevel, 0, 900, 0, 255); lightLevel = constrain(lightLevel, 0, 255); Hope this helps!
@TheNathanolder
7 жыл бұрын
back again. is there a simple change to the code so the lap time displays a decimal point ?? so it would display e.g 1.500 instead of 1500 ?
@michaelnrbo3038
11 жыл бұрын
Wow, sweet work! I downloaded the source code and datasheet, but I don't see the infrared emitter and reciever, only the display and a potentiometer - how can that be? And I also wondering about the source code - is the pin you have defined as "laserPin" the emitter? and where have you defined the reciever pin? Anyway, nice job! :D
@bestimmaa
11 жыл бұрын
You can! I will post a link when I get home...
@aGGreSSiv
8 жыл бұрын
this is great idea, you shouldnt stop develop this project. i tryed with your code but didnt work for me. I will try to fix.. Thaks for the idea man
@Frankiistein
11 жыл бұрын
Hey man! Awesome build. I was wondering if I could get the source code for school stuff :-)
@bestimmaa
11 жыл бұрын
It will take about 6 hours! Just arrived in the office ;)
@mucahitkahraman4666
6 жыл бұрын
hi me again. i have successfully made the circuit and modified(for the lcd that use is different-i2c-) and upload the code on arduino. but either when pressed the button the timer starts even the laser light is going on photoresistor or stack on standby mode even the light from laser doesnt go to photoresistor. Can you help me please?
@mucahitkahraman4666
6 жыл бұрын
Is the code working? my photoresistor is not responding? I have tried different photoresistors that both of them are not starting the timer or they start the timer when the button pressed.
@michaelnrbo3038
11 жыл бұрын
Oh, I thought that you used an infrared emitter and receiver :D I get it know ;-)
@bestimmaa
11 жыл бұрын
hey, download link is posted in the description. post some results if you have built something :)
@mucahitkahraman4666
6 жыл бұрын
hi. can someone explain the schematic of circuit please? i cannot figure out where to connect some resistors. Thanks.
@bestimmaa
6 жыл бұрын
Hi there.. A sketch of the circuit is posted at GitHub github.com/bestimmaa/arduino-laser-lap-timer/blob/master/circuit.png ... you can also find the Arduino Sketch there.
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