DO NOT ENTER: Arduino Leonardo LED Photo-resistance Reminder Light
by Enyalin in Circuits > Arduino
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DO NOT ENTER: Arduino Leonardo LED Photo-resistance Reminder Light
![截圖 2021-05-12 20.55.51.png](/proxy/?url=https://content.instructables.com/FTO/W7ZU/KOK1NBRO/FTOW7ZUKOK1NBRO.png&filename=截圖 2021-05-12 20.55.51.png)
![截圖 2021-05-12 21.12.30.png](/proxy/?url=https://content.instructables.com/FB7/4CDI/KOLH2AMX/FB74CDIKOLH2AMX.png&filename=截圖 2021-05-12 21.12.30.png)
The light is for reminding people from enter in dangerous or place shouldn't go in. People have the need can DIY the light. Every like Family, student, teenagers who have a interest can start to make it!!!
The project is alter from: https://www.instructables.com/Arduino-Leonardo-Ch...
The original project are making a Christmas decoration light, In my project I add a photo-resistance to detect there are people coming or not. The use of it are totally different.
Supplies
carbon film resistor x 1
metallic resistance x 1
Arduino Leonardo circuit board x 1
breadboard x 1
LED light x 1
Wire x 7
USB 20 cable 1.5m x 1
transparent box x 1
marker
paper
Step 1: Assembly Resistor on Arduino Leonardo
![截圖 2021-05-12 20.51.51.png](/proxy/?url=https://content.instructables.com/FOC/2M94/KOK1NBMU/FOC2M94KOK1NBMU.png&filename=截圖 2021-05-12 20.51.51.png)
![截圖 2021-05-12 20.52.00.png](/proxy/?url=https://content.instructables.com/F91/B7PO/KOK1NBMV/F91B7POKOK1NBMV.png&filename=截圖 2021-05-12 20.52.00.png)
![截圖 2021-05-12 21.23.19.png](/proxy/?url=https://content.instructables.com/F39/JRMB/KOLH2ARK/F39JRMBKOLH2ARK.png&filename=截圖 2021-05-12 21.23.19.png)
Follow the picture and place the materials on the right place.
Step 2: Start Write Down the Arduino Code
![截圖 2021-05-12 20.52.44.png](/proxy/?url=https://content.instructables.com/FWB/812Q/KOK1NBMW/FWB812QKOK1NBMW.png&filename=截圖 2021-05-12 20.52.44.png)
![截圖 2021-05-12 20.53.12.png](/proxy/?url=https://content.instructables.com/FZS/609M/KOK1NBMX/FZS609MKOK1NBMX.png&filename=截圖 2021-05-12 20.53.12.png)
copy down the code
code link: https://create.arduino.cc/editor/enyalin11/9d1ef1...
If you don't know how to type a code, you can also use ArduBlock. here is a link of how to download ArduBlock : https://www.davidhuanglab.com/ardublock
Step 3: Write Down Your Own Reminder
![截圖 2021-05-12 21.31.35.png](/proxy/?url=https://content.instructables.com/FJF/RE8G/KOLH2AXK/FJFRE8GKOLH2AXK.png&filename=截圖 2021-05-12 21.31.35.png)
Using paper and marker, design your word, structure... everything you want.
Step 4: Upload the Code
![截圖 2021-05-12 20.53.12.png](/proxy/?url=https://content.instructables.com/F9A/IBVJ/KOLH2B39/F9AIBVJKOLH2B39.png&filename=截圖 2021-05-12 20.53.12.png)
connect USB cable on the computer, click upload on the computer.
Step 5: Final Result
![Instructables sum 2 light](/proxy/?url=https://content.instructables.com/FA2/EN26/KOLH2B9H/FA2EN26KOLH2B9H.jpg&filename=Instructables sum 2 light)
Put the transparent box on the top of the LED light and place the product at a place people will go through before they went to your room or "the place"