This log entry will be focused only on all running costs. I will show all components needed per stage (tools are omitted) and the corresponding spreadsheet will be uploaded at the end of this entry.

Power Generation Stage

• 1 x Stepper Motor (17HS4417)
• 1 x JSP XPH-4 male + female + inserts
• 4 x M3 screws
• 1 x Aluminium U channel for the Motor Bracket
• 1 x 3D-printed Spur Gear
• 1 x 3D-printed Pinion Gear
• 6 x M6 stainless steel washer
• 2 x Full-wave rectifier (2W08M)
• 1 x Electrolytic capacitor (25V, 100uF)
• 1 x DC-DC step-down converter (MP2315)
• 1 x M3 Allen Grub Screw

Data Logging Stage

• 1 x FireBeetle (ESP32)
• 1 x Current sensor (ACS712-30A)
• 1 x 1 kOhm resistor
• 1 x 120 Ohm resistor

Smart Lighting System Stage

• 1 x 10x10 RGB LED Matrix (WS2812B)
• 3 x Light Dependant Resistor (LDR)
• 1 x 3D-printed Front Light assembly
• 1 x 3D-printed Rear Light assembly
• 5 x M3 screws + nuts for the headlight and rear light
• 3 x JSP 2.54mm XPH-3 housing (male + female + inserts)

eBox Stage

• 1 x 3D-printed eBox assembly
• 2 x 3D-printed Power Bank Housing
• 1 x 3D-printed eBox Mounting Bracket 
• 1 x Strip Board
• 1 x Relay (SRD-05VDC-SL-C)
• 2 x Diodes (1N4007)
• 2 x USB 2.0 to Micro USB cable (1m)
• 2 x Power bank
• 1 x Single Solid Core (SSC) Black wire (0.6mmx1m)
• 1 x SSC Red wire (0.6mmx1m)
• 1 x SSC Green wire (0.6mmx1m)
• 1 x SSC Yellow wire (0.6mmx1m)
• 1 x SSC Orange wire (0.6mmx1m)
• 1 x SSC Purple wire (0.6mmx1m)
• 2 x M3 screw
• 1 x Rubber Sheet (250x250x1.5mm)
• 2 x M3 Threaded brass insert 
• 8 x Neodynium Magnet Disc (3x20mm)
• 1 x Stainless Steel Rod Bar (200x2mm)
• 2 x Blue LED
• 2 x 220Ohm Resistor
• 1 x DPDT Switch

Wiring Harness Stage

• Black Heat Shrink Tube 3:1 (1m x 10mm)
• Black Heat Shrink Tube 3:1 (2m x 5mm)
• 1 x Blue Silicon AWG 22 wire (5m)
• 1 x Red Silicon AWG 22 wire (10m)
• 1 x Black Silicon AWG 22 wire (10m)
• Cable ties (200mm, 100pcs)
• Cable ties (100mm, 100pcs)

I already had some of these components, so prices will be based on current suppliers. Please, find the corresponding spreadsheet here.