85C1-A DC Current Panel Meter Ammeter

Description

What it is

L’85C1-A Analog Panel Meter Current DC 100mA It is a device designed for measuring direct current (DC) up to 100mA. This analog ammeter offers a clear display of current values on a panel display, making it useful in various electronic applications.

Features

• Accuracy: Class 2.5
• Measurement Range: DC 0-100mA
• Net Weight: 65g
• Dimensions: 64 * 56mm

What it is for

The ammeter is ideal for projects requiring the monitoring of electrical current in DC circuits up to 100mA. It can be used with Arduino or other microcontrollers like ESP, allowing for easy integration into control and monitoring systems.

Tutorial: How to Use Analog Ammeter 85C1-A

The 85C1-A analog ammeter is a useful component for monitoring electrical current in DC circuits up to 100mA. Ideal for Arduino projects, sensor systems, and control systems.

What you need

• Arduino Uno
• USB connection from PC to Arduino
• Jumper cable
• Battery or external power supply

Steps

1. Connect the 85C1-A ammeter to the Arduino using jumper cables to A0 (analog) and GND.
2. Configure pin A0 as an analog input in the Arduino code.
3. Write a sketch that reads the value from pin A0 and converts it to current.
4. Calculate the internal sensor resistance of the ammeter (check the datasheet) to convert the readings to milliamps.
5. Display the data on the serial monitor or an external display.
6. Test the accuracy of the meter with a stable current source.
7. Adjust the code if necessary to improve the reading accuracy.
8. Document the tests and experiments conducted.

Example code

void setup() {
  Serial.begin(9600);
}

void loop() {
  int val = analogRead(A0);
  float current_mA = (val * verifica sul datasheet) / 1024.0;
  Serial.println(current_mA);
}

Mini project

Create a current monitoring system for a small DC motor, displaying the data on an LCD screen.

Common mistakes

• Incorrect connection between Arduino and ammeter
• Ignore the internal resistance of the ammeter during calculation
• Do not test with stable currents to check accuracy
• Use an input voltage higher than the allowed limit

Recommended accessories

• 16×2 LCD Display
• RTC DS3231 Module
• 3.7V LiPo Battery
• 5V Optocoupled Relay

Frequently asked questions

What is the accuracy of the ammeter?
Accuracy depends on the internal resistance and usage conditions, check the datasheet for details.

Can I connect the ammeter to a circuit with current higher than 100mA?
No, it would risk damaging the device. Use more powerful ammeters for high current measurements.