What we seek is that a small gadget, I will provide sizes later on, which has an ultrasonic sensor and checks the liquid level of a tank and sends the data by connecting to the internet via Wi-Fi to a specific web server.
The project comprises 2 parts.
1st part is electronic component selection, schematic design, and simple layout. -----There should be one button for on/off and Bluetooth synchronization.
-Battery-powered, preferred 3V coin cell battery.
-Ultrasonic sensor range is between 0.05 to 2 meters.
-I will provide websites for component selection.
2nd part is firmware based on chosen micro-controller.
-On/Off by pressing the button for 5 seconds.
-Bluetooth will be activated only for a minute after pushing the button 5 times.
-We will use Bluetooth only for sending SSID and Password of the Wi-Fi that gadget will connect.
-Implement a simple GATT protocol
-Create a simple minimalistic iOS and Android to show working communication
-After the device connecting to Wi-Fi, it will send the liquid level of the tank once an hour with the id of the device and time.
I'm expecting a calculation of battery life.
38 freelancers estão ofertando em média $515 nesse trabalho
Hello I have been working for more than 10 years in the field of Sch, PCB design and firmware programming. I have experience in the areas including Wifi device. I'm flexible with my working hours. Cheers Srdan