• Raghupathy prakash
• Srinithish T
• Vijayakrishna J
• Rohin Senthil

The main aim of the project is to design and develop an automatic fertilizer mixing machine to mix multiple proportion of fertilizers and form a complex fertilizer at different variance of NPK ratios. The project is initiated to solve the issue by designing a hopper to store fertilizer and load cell as a weighing measurement system to analyze the weight in the hopper as from the microcontroller act as a automation kit to subtract load from hopper according input given from the end user of the product to develop NPK ratios and rotary mixer is used to mix the three different types of fertilizers to form NPK at standard ratios. The Average time to produce the complex fertilizer is 145 seconds according to the test results and maximum average load produced by the machine is 9kg.

NPK Ratio, Load Cell, Hopper Designing, Agricultural Machinery, Fertilizer Mixing Machine.

"Development of an automatic multiple fertilizer mixing machine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.525-532, March-2019, Available :http://www.jetir.org/papers/JETIR1903D81.pdf

"Development of an automatic multiple fertilizer mixing machine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp525-532, March-2019, Available at : http://www.jetir.org/papers/JETIR1903D81.pdf