Do Son 
Designing any hardware is a complicated process to complete, but not impossible. With anything, it all starts with an idea. Then you should proceed with learning how the electronic works and creating schematics. You would have to simulate your hardware to ensure that it is able to function properly on paper. Create a prototype, test it, and then go through the process again if you want to make improvements. It’s an endless cycle until you create that perfect product with your hardware.
Materials
Once you have your idea, then you would have to select the material which will house your electronics product. Materials such as plastics, metal, silicon, and other electronic components will help protect your product. A fully enclosed design will keep your electronic product safe from movement and outside elements. Also, the enclosed design will make your product look nice and clean from the consumer’s point of view. Make sure the design of your electronic hardware doesn’t shock anyone in your final product.
Simulate
Make sure that all your electronic components are calculated and simulated on a piece of paper. Ensure the math equations of your electronic physics don’t overload the system or under power the device. You should use a circuit board with POC or Proof of Concept before moving onto your actual PCB layout. This will save you money and time. It is important to run the simulations first.
Firmware/Software
This is where you create the software/firmware for your device you just have created. Creating software requires a person to understand programming languages such as Python, C++, and many others. This will enable you to program the device using the computer language to do anything. An example would be to set up an auto-feed for your garden depending on the soil hydration, acid/alkaline levels, and even alert you if any of the systems go offline. The possibility of programming anything is endless. Lastly, make sure you do a test run before you start mass-producing the product. Never know what you need to fix beforehand.
Budgeting and Time
Everyone knows that time equals money, and that money never sleeps. Although this is all true, you must find the quickest way and within your budget to create an excellent product for your consumers. As you can see above, there is a list of things you have to complete before you get to your final product for productions. There is always an electronic development service that can always alleviate your time so that you can focus on your business. Usually, it is a good way to outsource a design concept to an outside organization, and could even make it better. Time is money and it would be beneficial to you by double the effect by outsourcing to an outside organization.
Conclusion
In conclusion, the development of an electronic device requires time to produce something great. Designing, developing, testing, and redesign will take a lot of your time. Sometimes outsourcing the design/software development part could be beneficial to you through time, and able to complete your final product faster.