Transferring money from Personal Account to Business Account Via business equity

Hello everyone, I was not sure where to post this question. I own a single-member LLC, and it's doing decently well, but I would like to transfer money from my personal checking account to my business checking account and claim it as equity. The reason for doing this is that I would like to buy a camera in the future for my business and claim it as a business expense, but I don't have enough money from my business to purchase the camera in full. The first question is, would this pierce my Piercing the corporate veil by transferring the money with QuickBooks and then using it? Second question: Could I use part of the personal money I put into the business account and a portion of my business profits to buy the camera and then write off part of the camera on my taxes at the end of the year? Thank you