Seed planters with the conventional ground wheel and chain-gear driven seed metering units suffer from several limitations. such as the inability to plant seeds at variable rates. high missing rates at faster travel speeds. and higher down-times due to the intricacy of the manual discs replacement procedure for planting a different type of crop seed. https://foldlyers.shop/product-category/usb-type-c-hubs-and-card-readers/