Enhancing a Magnifying Headband with Auto Sensing Light -- Episode 585

Do you often use a illuminated magnification headband? Do you get annoyed that you need to turn it off and on when looking away from your work? This project contains 2 solutions, a basic tilt sensor option that can be added in minutes, and a more complex distance detecting circuit which will change the illumination depending on how far away the object you are looking at is.

Watch the Video:

Bonus Content:

Download Code and Schematics

Bill of Material:

Product Name	Manufacturer	Quantity	Buy Kit
LC1780USB Magnifier, Spectacles & Headband, 1x, 1.5x, 2x, 2.5x & 3.5x	LIGHTCRAFT	1	Buy Now
102010328 Arduino Microcontroller Board, SAMD21G18, ARM Cortex-M0+	SEEED STUDIO	1	Buy Now
STMICROELECTRONICS Daughter Board, VL53L0X Gesture and Ranging Sensor, FlightSense	STMICROELECTRONICS	1	Buy Now
MICROCHIP Power MOSFET, N Channel, 60 V, 200 mA, 5 ohm, TO-92, Through Hole	MICROCHIP	1	Buy Now
COMUS (ASSEMTECH) Tilt Switch, 15 °, 60 Vac, 0.25 A, Nickel	COMUS (ASSEMTECH)	1	Buy Now

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hifromkatie over 2 years ago in reply to DAB +1

Thanks, it hard to find the culprit further than "something under the epoxy blob", by bypassing the switch circuit which has the auto power off and other stuff hidden under expoxy, the problem is resolved…

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DAB over 2 years ago

Nice build Katie.

You are probably going to have to search through you circuit and get some accurate current readings to trace down the culprit.
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DAB over 2 years ago

Nice build Katie.

You are probably going to have to search through you circuit and get some accurate current readings to trace down the culprit.
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hifromkatie over 2 years ago in reply to DAB

Thanks, it hard to find the culprit further than "something under the epoxy blob", by bypassing the switch circuit which has the auto power off and other stuff hidden under expoxy, the problem is resolved. Its a pain to not use the nice moulded switch, but I may see if I can do the same circuit in the same shape and size myself to fit in there, or if I can get a very similar latching switch to sit in the same gap.
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dougw over 2 years ago in reply to hifromkatie

Would a FET on the output of the "COB blob" create a low impedance switch under control of the blob?
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