I will develop embedded system using arduino,esp32,avr,nrf52 series,stm32,

what I can do for you:

(1 ) Electronic components selection,Schematic , PCBA design, output production files

(2) Help you to review schematic , pcb files, and test hardware

(3) quickly assist in making pcba samples, functional verification and abnormal problem analysis

(4) Embedded software development from 0 to 1.

(5) Help you to add new function or module to your embedded software system

(6) Help you to review code ,test , fix bug in softeware

(7) Based on the prototype of your needs, convert it into an actual embedded system design

(8), Help you to translate English technical documents into Chinese

Microcontrollers that I used:

(1) 8 bit : 89C51, atmega16, atmega128, atmega32u4

(2) 32bit: stm32f103, stm32f107, stm32f407

IOT Soc that I am using:

(1) RSL10 , RSL15----On Semiconductor

(2) EFR32BG27-----Siliconlabs

(3) NRF52832------Nordic

(4) ESP32-S3------Espressif

The development platform I used:

(1) Keil .stm32cube, Micochip studio

(2) on semiconductor IDE, Simplicity studio,

(3) Altium designer, Kicad

(4) Qt designer

(5) esp32-idf, Arduino