This RF EMF Strength Meter monitors high frequency radiation in the 50MHz to 3.5GHz range. Ideal for mobile phones, cell phones, base stations, locating RF hotspots, wireless network (Wi-Fi) RF detection, RF”Electrosmog” detection, and microwave leakage. It features non-directional measurement with 3-channel (triaxial) measurement probe, Max Hold and Average functions,… Read more
A motion detection alarm circuit using a PIR.SENSOR motion detection, if the move is a positive light from the PIR sensor, triggered by a delay circuit, Q1 and relay it to work and hold for about 20 seconds. to apply to the siren to signal a warning to stop, or discarded by the switch S1 [...]
This is just the CNC machine with motors. You will need a 3 Axis Stepper Motor Driver to manage each motor, a spindle/cutter(a Dremel would work) and a DC power supply for the driver. You will also need a computer with a standard printer port and CNC software. You will also need a way to [...]
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