So, I am a relatively young EE (26, italy) and I already work as a teacher in an high school. Several times I was requested to design and develop some circuits, mainly digital based on ESP32, nothing particularly difficult. For the first I did the full design and prototiping, even designing a pretty 3d enclosure. It worked fine. I charged the guys for a ridicolusly small amount of money, but I was happy just because I proved to myself I was capable of doing it.
Jobs like this keep coming, and I am finding myself in a very akward position: I do not know how much my job is
For small repair stuff I charge partially on the working time (something like 20€/h) plus a fee that takes into account the actual trubbleshooting and the importance of the item i am fixing.
But for designing and prototiping? Full developement of a custom board based only on the customer needs, prototiping, testing and delivery of a couple sample + all the files for ordering pcb online?
What guidelines do you guys follow?
Also, for next project, i am seriously considering delegating small pieces of circuit to be designed by other EEs, and I just put everything together. How much should THEM be payed?
Hope this is the right forum section for my question.