Hi
I can design only Simple Prototype Processor Board with schematic using " 1.5" RGB OLED Display" "Analogue and digital VU meter for communicating via SPI interface.
I have seen the link and attached documents you shared.
I have humungous experience in RGB OLED Display based "Prototype Processor board" design and would make the solution cost effective, robust, and efficient.
If you are looking for reliable design partner please message me now
I provide services of PCB Design, Circuit Design, Circuit Review, PCB review, Circuit simulation, IOT products development and Sensor conditioning product development.
The expertise of mine is in the following fields:
1. Wireless Products – BLE, Wi-Fi, NFC, Lora etc.
2. Power Electronics
3. IOT sensors interfacing
4. Microcontrollers- ESP32, STM32, STM8S, RL78 etc.
5. GSM, GPS, GPRS, NBIOT
6. Digital VU Meter
7. RGB OLED Display
8. Digital VU meter
After reading your project details, I have certain queries and suggestions:
1. What is the application of this product?
2. What will be ambient temperature of this product?
3. What are the mechanical constraints to be taken care of?
4. What are the standards that the product would be complying to?
Please try to answer these questions based on which I would be providing free of cost consultation.
Waiting for your message,
Regards
Hari Mohan
Engineering for one is a magic for others