Build software for raspberry pi3 for level control

Software will need to be built to check for updates on a webserver every day. Web server location to be advised. Software will need to authenticate its self to be able to download updates. Software required for Raspberry Pi3 (R-PI) which will control level via ultrasonic sensor and temperature via an infrared sensor. Interface from R-PI & inputs and outputs: We have a custom built PCB which has a number of digital outputs which we will be using: we are also using an ultrasonic distance sensor (similar to [login to view URL]) and also an infrared temperature sensor. Infrared temperature sensor data to be provided. Level control: - Level control to be set in measurement of mm (20mm to 3000mm) - Low level set point (in mm) - High level set point (in mm) - Warning high level set point (in mm) - Ultra-low level set point (in mm) Temperature control: - Temperature control to be set in ˚C - High level set point in ˚C Key: - Relay 1: MW Inlet - Relay 2: LW Inv Lockout - Relay 3: HT flush valve - Relay 4: High level alarm Control method: Relay 1 opens and ultrasonic sensors monitors’ level and when level reaches high level set point relay 1 closes. As fluid level drops and reaches low level set point relay 1 will open and close when high level set point has been reached. This process continues unless stopped by user. If the fluid level reaches the Ultra-low level set point then relay 2 will need to open and remain open until the level reaches the high level set point. Once the level has reached the high level set point then the relay can then close. A warning on the GUI will need to be displayed with the message “LOW WATER” The temperature sensor is monitoring the temperature of the fluid. If the fluid reaches the level set point then relay 3 will need to open until ultra-low level has been reached. Relay 3 will then close once ultra-low level has been reached. During this time relay 1 must remain closed and only open once relay 3 has closed. If temperature is below set point then unit returns to normal operating. If high temperature is activated then run this process again. During this process a message needs to be displayed on the screen “HIGH TEMPERATURE – TANK FLUSH IN PROGRESS” If warning high level set point is reached then display a message on the display “CRITICAL HIGH LEVEL – CHECK INLET VALVE” and activate relay 4. Any questions please message me. An NDA will need to be signed before project starts.