As a professional, Guide in straight forward direction about your concern. And also working as your requirement and my work style that priority of relation is greater then money making. I can provide a Solution base on C, C++, data structure on Various Controller and development board like as 8051 ,Arduino board,PIC , Renesas, Texas, Atmel, Nordic e.t.c. Also provide solution for different kind of protocols like I2C, SPI, UART, ADC, PWM, RS232, RS485 And Also Working on many sensors and modules like Also, Complex PCB Designing Based on “Proteus”,”KICAD", “ALTIUM” and “Eagle”.