MetroMik is a Digital Metronome I built for my son Michele, hence the name. It's based around a PIC16F1825. Project is made for MPLAB X Ide using XC8 compiler and MPLAB Code Configurator.

Characteristics:

• Powered by a 18650 LiPo Cell
• Charging circuit
• BPM selection from 10 to 999
• Tempo selections: 2/4, ¾, 4/4
• Menù navigation using a rotary encoder
• 3 digits, 7-Segments led display
• Beating led
• Low battery indication on display

Full project specs are listed here.

Here is a video showing how it works:

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• TP4056 Lipo Charging module with protection
• 18650 LiPo cell
• SX1308 DC-DC Booster module
• LM386 amplifier module
• 74HC595 Static Driving 3-digits 7-segments led display
• PIC16F1825
• Rotary Encoder with pushbutton
• LM1117-3.3 or LD33 Voltage regulator
• 4Ω 0.5W Speaker
• a bunch or resistors and capacitors see schematic
• Bahar Enclosures BMC-70012 enclosure