II. Mother Board : Project for Honglong C.

The project has to be done only whith Eagle CAD software ([login to view URL]). Components should be on one side of the pcb. The purpose of this project is to design a PCB board with a Rasperry Pi 2/3 witch include the UPS Hat Board : - board has to fit Standard DIN rail mounting enclosure - 12v/24v power supply with surge and reverse polarity protection, - External battery connector, - On-board LED for battery operations status, - File Safe Shutdown Functionality, - On-board LEDs for power supply (24v, 12v, 5v, 3V3, battery, UPS) and serial line activity, - Lcd connector (16x2), - external ADC (Analog Digital Converter) connected via SPI to Raspberry Pi, - Real time clock (RTC) with on-board lithium back-up battery, - PWM FAN control, - Buzzer, - 8 Relays + leds (8-Channel Relay Module with Optocoupler H/L Level Triger 12V/5V ?, relays that can be configured as ACTIVE-HI and ACTIVE-LOW) - I2C Eeprom - Reset Button - 40 pins female connector to interface to the Rasperry Pi 3, - Power supply, connections ( serial, can bus...), digital and analog I/O on screw terminal block - Headers connectors: (Standard RS-232 and RS-485 interfaces to the Raspberry Pi serial line, with opto-isolator and electrostatic discharge protection) 1 x Protected RS232 Port 1 x Protected RS485 Port 1 x Protected 1-wire port 1 x Protected I2C port 1 x Protected SPI port 1x Protected CAN bus to connect additional board - Stackable Header for breadboard Both projects will have to be made, they cannot be dissociate.