Analog panel meter [50uA]

A large, elegant analog panel meter with a 0–50 µA full-scale deflection. The front cover opens with two screws for easy gauge replacement, and a zero-adjust dial ensures accurate readings. Four 3mm mounting screws on the back make it simple to attach to any box or enclosure.

With a 50 µA sensitivity, this meter can be driven from any microcontroller's PWM output through a series resistor. Connect the black wire to ground, add a resistor in series with the red wire, and sweep the PWM from 0–100% to swing the needle. Use R = (Supply Voltage) × 20,000 — so 100K for 5V or 66K for 3.3V.

Key Features

• 50 µA Full Scale – High sensitivity, usable with any power supply voltage
• Replaceable Gauge Face – Front opens with two screws for custom scales
• Zero Adjust – Calibration dial for accurate needle positioning
• Easy Panel Mounting – Four 3mm screws, 6.5cm apart on the back
• PWM Compatible – Drive directly from Arduino or microcontroller PWM output

Specifications

• Measurement Range – 0 to 50 µA
• Face Dimensions – 80 × 80mm (3.125" square)
• Depth – 32mm total (13mm panel + 19mm coil)
• Mounting – Four 3mm (4-40) screws, 65mm apart

PWM Resistor Guide

• 5V supply – Use 100K ohm series resistor
• 3.3V supply – Use 66K ohm series resistor
• Formula – R = Supply Voltage × 20,000

Ideal For

• Retro-style project displays and enclosures
• Arduino and microcontroller visual output
• Custom instrumentation panels
• VU meters and signal level indicators

Package Contents

• 1× Analog Panel Meter (0–50 µA)