【RA】Renesas small fan +688101C

--- Minimalist materials realize stepless speed regulation of the fan potentiometer, manual cutting of PCB, production of brackets, gear-shaped buckle design to realize multi-directional blowing --- Detachable chip, reducing the number of chip welding times, realizing multiple chip projects (via holes) More, suitable for ordinary personal projects, not suitable for high-precision tasks) utilization, reducing costs --- --- --- PCB slicing and welding + program software writing · Practice summary --- 1. PCB should be more empty groove for easy cutting 2. There should be a larger space (>3mm) between the two PCB blocks that need to be cut, and the cut gear is about 1-2mm thick 3. The width of the pad on the bracket should be larger (2mm), pcb The thickness of the double-layer board is 1.6mm. 4. The size of the gear and bracket cannot be too suitable. Enlarge it appropriately, otherwise it will not fit in. 5. The direction of the chip in this project is wrong and cannot be welded according to the dots on the PCB. It must be rotated 90 degrees counterclockwise. ° 6. Use e2studio for software and save a lot of work. 7. Basically learned to use Renesas chips. Remarks: Killing a chicken with a sledgehammer, a potentiometer can solve the problem, but the level is limited, and Renesas finally paid the price. Actual consumable price: 0 yuan (RMB) --- Final acknowledgments: Thank you to all the bosses in the group, teachers from Renesas and Lichuang, and thank them for their guidance! Thank you Lichuang! Boot camp yyds! Lichuang is awesome! I wish Lichuang will get stronger and stronger! --- ![IMG_20220421_141826.jpg] ![IMG_20220421_141820.jpg] ![IMG_20220421_141814.jpg]