Solder Wire Spool (1mm/50g – Yihua) mechanic solder paste the lower quad will see

the lower quad will see surface features appear to move further and this will result in a higher optical flow values

It can be used as repairing tool for small cracks of furniture

This low-cost RF transmitter can be used to transmit signals up to  50-100 meters (the antenna design

no special USB controller is needed

Plant dissection/examination

Solder Wire Spool (1mm/50g – Yihua) mechanic solder paste the lower quad will seeIntroduction : High quality solder wire with rosin core in spool (roll) pack Yihua brand. YIHUA Tin Lead Solder 37Pb 63Sn 50g 1mm Soldering Specifications Brand: Yihua Diameter: 1 mm Weight: 50 gram Melting Point: 183C