Voltmeter Ammeter Kit - Blue Backlight LCD

Voltmeter Ammeter is a great kit to measure voltage and current at the same time. It measures 0-70V or 0-500V voltage with 100mV resolution and current from 0 to 10A. It's a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. Kit uses PIC16F876A microcontroller with built-in ADC (Analog to Digital Converter) to sample voltage with current and display it on 16 x 2 backlighted LCD display. It comes with all the parts required to build high quality kit, including double-sided PCB with beautiful red solder mask and plated through holes. With slight modification it is possible to measure higher voltage and current. To measure voltage that is higher than 70 Volts simply replace R3 6.8K resistor with included 1K resistor. This will allow to measure up to 500 Volts. To measure current that is higher than 10A simply replace 0.1 Ohm 5W power resistor with higher wattage resistor. For example 20W 0.1 Ohm resistor will allow to measure up to 20 Amperes. Kit can also measure AC voltage if rectifier bridge is added to voltage input as well as measure and be supplied by the same power source.

Specifications

Voltage Input: 0 - 70V / 0 - 500V

Current Input: 0 - 10A

Voltage Supply: 6 - 30V

Current Consumption: 30mA

Component List
   1x 16 x 2 LCD Display with Blue Backlight
   1x PIC16F876A - Programmed microcontroller
   1x High Quality PCB with red solder mask and plated through holes
   1x 28-DIP IC Socket
   1x 4MHz Resonator
   1x 16 x 1 Gold Plated Male Header
   1x 16 x 1 Gold Plated Female Header
   1x 4 x 1 Gold Plated Header
   1x LM7805 5V Voltage Regulator
   1x 10K Trimmer Potentiometer
   1x 4 x 10K Network Resistor
   2x 100K 1% Metal Film Resistor
   2x 6.8K 1% Metal Film Resistor
   1x 1K 1% Metal Film Resistor
   1x 33 1% Metal Film Resistor
   1x 0.1 Ohm 5W Power Resistor
   1x 100uF Panasonic Capacitor
   1x 100nF Multilayer Ceramic Capacitor
   1x Manual with Schematic