piezo buzzer – Experimental Engineering

A 5 megapixel digital camera from Vivitar. Visible here is the lens, viewfinder & flash.

Rear of the unit showing the LCD & user control buttons.

Front frame removed showing some of the internals. Shutter assembly & lens in centre, battery compartment at left.

Rear frame removede, showing the LCD module & tactile switches.

LCD module removed from the PCB

Flash PCB removed. Transformer is fed with the 4.5v from the 3 AA cells & steps it up to ~300v DC for the flash capacitor. A pulse transformer energizes an electrode next to the Xenon flash tube with ~5kV to ionize the gas.

Main PCB removed. Internal flash ROM & RAM IC visible above the SD card socket. USB connector is at the top right, next to the piezo buzzer.

Main processor on reverse side of the PCB.

Closeup of the CMOS image sensor with the lens assembly removed.

An early speed radar detector from the early 90’s. Pictures showing the front of the unit with the option buttons.

Bottom of the unit showing label. Unlike the newer plastic detectors, the whole casing of this unit is cast aluminium.
Model Uniden Stalker RD-6000W.

PCB removed from the casing. Volume/power control on the left. Option tactile switches on the edge of the PCB, with the indicator LEDs. Power input jack on the right hand side of the PCB. Large aluminium can is the detector assembly, containing the detector diodes. Waveguide horn is at the top.

Shot down the waveguide, showing the detector diodes at the end.

Indicators on the front of the unit, X, K & Ka band detection LEDs on the left, Power & detection level (1-4) LEDs in centre. City (C) (Audio (A) & Mute (M) LEDs on the right.

Bottom of the PCB, showing detection logic. Piezo buzzer top left.

Custom Uniden CPU. Marking UC1465.

Tag: piezo buzzer

Vivicam 5190

Uniden Stalker Radar Detector