Category: Electronics

Best Easy Phone Upgrade Ever!

Best Easy Phone Upgrade Ever!

My USB-C charging and headphone socket had become unreliable. I look after my phones and have never broken, loosened or otherwise adversely affected a charging socket before but had to assume that’s what had happened because it was difficult to charge (long leads that put a bit of weight on the connection would fail part …

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How to Read Resistor Colour Codes Right First Time

How to Read Resistor Colour Codes Right First Time

Is it just me or are resistors (especially 5-band variety) hard to orientate (left-to-right) so that reading the right code is straightforward? For years I’ve been throwing resistors into a pot on my bench when I remove them from a breadboard because, at the price, it’s easier to take a known value from a drawer …

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House DC Power

House DC Power

Make a board as per these PDFs Make aluminium bits to secure PSU. Mount the PSU in the wooden board. 3D Print fuse holders as per this STL Mark copper strips as per this DWG and these photos Drill 1.5mm holes from the marked side Drill 3mm holes in the 12mm pieces – slowly so …

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WiFi-enabled AC Light Switch

WiFi-enabled AC Light Switch

A light switch that can be incorporated into a 2-way household switching circuit to add WiFi control while leaving the existing switching working in a way that requires the user to have no knowledge of the WiFi switch and allows installation using wiring conventions that are recognisable to anyone familiar with traditional 2-way switches. Troubleshooting …

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How To: Install Bluetooth Adapter on MX-5 NC

How To: Install Bluetooth Adapter on MX-5 NC

The adapter I used was one of these Start by removing the side panels from either side of the radio. Insert a pry tool and pull towards yourself as it goes in The panel will pop off forwards Then unscrew two side screws from within the plastic mount for the radio unit And the same …

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Opto-isolator (SFH628)

Opto-isolator (SFH628)

Definitely had it working with smooth output using 100nF & 100kΩ and with 10µF & 10kΩ but those are not equivalent RC values so also try 1kΩ if needed for other reasons, eg below Also now need to try with Vout feeding a microcontroller. Which will need its input pin pulling low (so 10kΩ might …

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