MartinFowler

6 photosensitive boxes (bottom + side)

Overview

The photosensitive circuit of the photosensitive box

does not light up when the ambient light is strong, but lights up when the ambient light is weak. The R2 photoresistor has small light intensity resistance and large light weak resistance to achieve a voltage division on the base stage of the triode, thereby achieving the effect of controlling the on and off of the triode. The R1 test uses 24k brightness for best results.

The feasibility of the circuit has been tested and the results are good.

The entire circuit is on the bottom PCB.

The second version has a window at the board edge connection, and uses tin to connect the five boards together, which is stronger and more beautiful. At the same time, the circuit is guided to the four boards on the side, realizing multi-board connection. , so that the side lights can also be lit.

Bilibili video address click to eat: https://www.bilibili.com/video/BV1ge41157QZ/?spm_id_from=333.999.list.card_archive.click&vd_source=efc8351bbf5e855ebbaee0f1e0636727

Design Files

Related Devices

Devices	Class	introduce	Datasheet
2N3904	Discrete semiconductor;triode	Rated power: 625mW Collector current Ic: 200mA Collector-emitter breakdown voltage Vce: 40V Transistor type: NPN	Download

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Update:2024-11-22 14:28:06

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