Kids Night light - on at dusk

297

03:34:54

The 1 meg resistor is a LDR
R1 470 ohm can be between 470 - 1k ohm
Experiment with different resistance till the lights light.
R3 10 ohm can be more or less depending on the brightness you want.
 I have used slow flashing rgb diodes for this and covered with hot glue so the color blend's to 16 color scale. My wife and kids liked the project. It's cheep and battery operated with a 18650 lipo. 

published 2 years ago

Kristrife

2 years ago

Your circuit is poorly polarized, on the other hand... both transistors are necessary, 1 is enough to meet the objective you are trying to teach.

yra

2 years ago

Thanks Kris, cheep simple quick anyone can complete. I'm glad you get it.

Kristrife

2 years ago

Más bien me alegra que lo entiendas querido amigo, es obvio que una buena empresa de electrónica se preocuparía por ese detalle, las grandes empresas fabricantes lo hacen, por qué no entender este detalle tan valioso. También existen otros detalles muy importantes en el diseño de cualquier circuito, uno de ellos es; Cuanto menor consumo energético tenga el circuito cumpliendo su objetivo podremos decir que es un circuito bueno y eficiente. Pruébalo amigo. Sea lo que sea, espero poder ayudarte con lo que sé. ¡Saludos!

yra

2 years ago

Sorry Kris I don't speak Spanish

yra

2 years ago

Thanks for your good advice and good wishes, sure your helpful, I just wanted to make things easier for the beginners as you noticed.

yra

2 years ago

Please copy me and fix and repost so we all can share the knowledge.

yra

2 years ago

That's what the site is about sharing and learning, I've been here for years and have to thank many people here. Share with us your knowledge, and experience. I'm a technician some of us are master design engineer and some are students, we all learn from each other.

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