Android Phone App - Bluetooth Sensor Based Controller -- 2

Firstly, thanks to the freelancers who showed interest to our previous post for the same project. New freelancers are also welcomed to bid on this project. We delayed in replying to the freelancers because we were still updating the requirements. Now instead of 4 sensors (as in the previous post) we need 6 sensors to be part of this application. Please revisit the updated list of sensors below and provide estimation. Project Description: I am looking for a Android based smart phone application to control electronic sensors / home appliances. The connectivity between smart phone and sensor/hardware appliance is via Bluetooth. The project consists of parts - 1. Mobile User Interface (UI) 2. Underlying Sensor Specific Code and Bluetooth Packet Generator 3. Sensor Device As a first step, I would like to develop/create the Sensor Specific Code and Bluetooth Packet Generator. For instance let us take that user wants to determine room temperature using a temperature sensor. From UI user requests for temperature. Command from UI is processed by corresponding sensor code (temperature sensor code in this instance) and is then converted into a bluetooth packet which is ready to be transmitted (done by "Underlying Sensor Specific Code and Bluetooth Packet Generator" module). The format of bluetooth packet needs to be defined, so that at receiving end Sensor Device can interpret users command. Sensor Device responds back with temperature determined by the temperature sensor, via bluetooth packet and then to the UI. Attached high level flow diagram for reference. The code must incorporate following updated six sensors: 1. Temperature 2. humidity 3. Light 4. UV 5. pm2.5 6. PIR Please Note: Each sensor specific code should be independent and should be extendable.