Components and supplies
1N4007 – High Voltage, High Current Rated Diode
Resistor 100k ohm
Grove - RTC
Arduino Nano R3
LED (generic)
Resistor 10k ohm
Project description
Comments
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Anonymous user
2 years ago
Nice project, congratulations. I wonder how you control so many leds regarding the number of available digital ports in Arduino. Perhaps you could share the connection diagram with us, it would be very useful. A tip: if you could use PWM, you can control the brightness of the leds without additional hardware. I did not understand how you use different resistors between active and inactive leds, once they switch their state over the time.
pdio
2 years ago
I used digital pins 0-13 (14), and analog 0-3 (4). That's 18, and I needed 18 LEDs. I can not use PWM on all these pins, so that's a no go. I will upload a picture of how I connected the LEDs, so they shine dim when inactive.
dani_ggarrigo
3 years ago
Hey man, I really like your project! I want to make something similar, so it would help if you could share the code that you used. I know this post is from a couple of years ago and the code may be deep in your computer, but it would be a great help! Thank you!
Anonymous user
6 years ago
Nice project, congratulations. I wonder how you control so many leds regarding the number of available digital ports in Arduino. Perhaps you could share the connection diagram with us, it would be very useful. A tip: if you could use PWM, you can control the brightness of the leds without additional hardware. I did not understand how you use different resistors between active and inactive leds, once they switch their state over the time.
pdio
2 years ago
I used digital pins 0-13 (14), and analog 0-3 (4). That's 18, and I needed 18 LEDs. I can not use PWM on all these pins, so that's a no go. I will upload a picture of how I connected the LEDs, so they shine dim when inactive.
Anonymous user
6 years ago
I like how you used the old jewelry box. It's useful, and a great conversation piece.
pdio
2 years ago
I bought the wooden box in an arts and crafts store and used some wood glaze on it.
Anonymous user
2 years ago
Hey man, I really like your project! I want to make something similar, so it would help if you could share the code that you used. I know this post is from a couple of years ago and the code may be deep in your computer, but it would be a great help! Thank you!