Quantity   Component name
1 × 0.96" 128X64 OLED LED Display Module IIC I2C White or Blue. VCC-GND-SCL-SDA pin configuration
1 × Battery Holder CR2032/2025 Through-hole Mount Manufacturers No: BAT-HLD-001-THM
1 × 4 Pin Single Row 2.54mm Pitch Straight Pin Male Headers
1 × CR2032 Battery
1 × PCBs & 3D printed case - see "files" for the downloads
2 × 5 Pin Single Row 2.54mm Pitch Right Angle Male Headers
1 × Thick Film Resistor - SMD 10 kOhms Case Code - in: 0805
2 × Thick Film Resistors - SMD 22 kOhms Case Code - in: 0805
2 × Thick Film Resistors - SMD 33 kOhms Case Code - in: 0805
2 × Thick Film Resistors - SMD 88 kOhms Case Code - in: 0805 (I actually used 88.7K.... nearest available value)
1 × PUI Audio Speaker 3V 2730Hz 85dBA Manufacturers No: AT-0927-TT-6-R
1 × SparkFun Switch Manufacturers No: COM-10860
7 × M2 - 12mm Allen Bolt Socket Cap Screws
1 × SparkFun Joystick (5-way Tactile Switch ) Manufacturers No: COM-10063
1 × 6x6mm Momentary Tactile Switch - Height: 9.5mm Termination Style Gull Wing if possible. You could also use a shorter switch. The button protrudes from the case 3mm, which might be high for some.
1 × 5 Pin Single Row 2.54mm Pitch Right Angle Female Header Socket
4 × 4 Pin Single Row 2.54mm Pitch Straight Female Header Socket
4 × 2 Pin x 2 Row 2.54mm Pitch Straight Female Header Socket
1 × 2 Pin x 2 Row 2.54mm Pitch Straight Pin Male Headers
4 × ATTINY85-20SH Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers