![]() ![]() ![]() Total cost: € 74.00 (if I had to buy all the components on Ebay/Amazon). Cables, screws and other minor components (€ 5.00). ![]() One 5V and 12V dual output power supply: You can use 2 separated PSUs or a 12V with a step down converter to 5V (€ 15.00) One LAN cable coupler: to easilly disconnect the main assembly to the display panel (€ 2.50).Three momentary push buttons, 1 is for reset (€ 2.00).One 8 digit 7-segment MAX7219 display module (€ 2.00).One relay board: to switch off the fans when they're not needed (€ 1.50).One Pro Micro: Any ATMega 32u4 powered board should work fine with my code (€ 4.00).Four 120mm PWM fans: I went for Arctic F12 PWM PST because of the ability to stack them in parallel (4x € 8.00).One aluminum panel: cut at 19" in width (€ 3.00).Four 3.6x1cm L shaped PVC profiles (€ 4.00).One acrylic panel: used as the base (€ 1.50).Note: I tried to realize this project with things I had lying in the house, so not everything can be ideal. ![]()
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