Author Archives: techydiy
How to Make a Modern LED Infinity Illusion Mirror
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4 Digit LED Clock Kit with Temperature – Full Build Instructions
How to make a DIY Batman LED Fidget Spinner
How to make a diy led finger fidget spinner
Opto isolated dual relay module (Arduino)
Keyes SR1y Relay module circuit
The Keyes SR1y relay module is an active high relay module with an SPDT relay.
Maximum 10A 250V AC
Maximum 10A 30V DC
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How does an Electric Relay work?
Relays are electrically operated switches, which allow a low-level electrical signal to control a separate larger electrical voltage or current.
Several types of relays are available to suit different applications, including reed relays, automotive power relays
, latching relays
, contactors
& coaxial relays.
Relay Construction
A relay is an electromechanical device that consists of a number of parts, including the Coil, core, armature, yoke, contacts, spring and the push-rod.
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How to Make a 3D LED Acrylic Edge Lit Xmas Tree Lamp
Corner dowel drilling jig
This is a 45 degree drilling jig that I knocked up for making holes through corners. This makes the process of installing dowels in box corners much easier.






