Easy way to drink more water every day.
How much water do you drink a day
You will be aware of the importance of The habit of drinking water without mentioning.
We need to drink more water. So, I wanted to know how much drinking water.
WIZwiki W7500(Wiznet) —— 2
Xbee(Digi) —————————— 2
SD card ———————————— 1
OLED Display(SeeedStudio) —— 1
Load Cell + HX711 —————— 1
LED ————————————— 2
Tact Switch ————————— 2
When I drink water, a Client send amount of water to Host.
Host can store the amount of water and Real time(using NTP) to SD card.
How to check the amount of water you drink.
- Make a chart and tick it off each time you drink a glass.
- Automatic sensing
- Ultrasonic sensor to check the amount of water
- Measure weight of the water.
Weight of water?
Pure water has its highest density of 1000 kg/m3 at temperature 4C(39.2F)
Load cell + HX711
The force being sensed deforms a strain gauge. The strain gauge measures the deformation (strain) as a change in electrical resistance, which is a measure of the strain and hence the applied forces.
Make Cup holder(3D modeling)
used 123D Design tool
Calibration & Measurement
This 9V battery is 44g and I made sure that the measurements.
(W:43g -> Current weight, B:43g -> Temporary value for comparison)
For Calibration, You have to change the value of scale in source code.
Client send the data to Host.
send 134: data type(Store at SD card: 1) + amount of water(34ml)
Access and request to NTP server for realtime.
Save realtime and a amount of water in SD card.
Put up a cup of water on top of the Load cell weight sensor
Client sensed 264ml of water.
When I was drinking water, W:0(Current weight:0, because of holding the hand), B:264(saved weight:264)
Put up a cup of water again. send data type(1) + 84ml of water.
Logged data on SD card
But, you don’t have to think about is do a few liters of water a day
You just have to set the target amount of water. Then you can see the percentage of data like below.