arduino/rc-gateway
1
0
Fork 0
Code Issues Pull Requests Actions Projects Releases Wiki Activity
rc-gateway/devices/oil_sensor
History
Nicu Hodos feee8c2fe0 update mode of operation documentation for oil sensor
2025-10-17 09:06:18 +02:00
..
docs
use LFS for images and Fritzing files
2025-09-20 10:29:08 +02:00
include
re-organize:
2025-09-20 10:00:42 +02:00
lib
re-organize:
2025-09-20 10:00:42 +02:00
src
re-organize:
2025-09-20 10:00:42 +02:00
test
re-organize:
2025-09-20 10:00:42 +02:00
.gitignore
re-organize:
2025-09-20 10:00:42 +02:00
platformio.ini
move libraries into lib folder which is platformio specific
2025-09-20 10:38:53 +02:00
README.md
update mode of operation documentation for oil sensor
2025-10-17 09:06:18 +02:00

README.md

Oil sensor

Using an ultra sonic sensor, it detects the amount of oil used for heating.

For optimization purposes, it uses 2 microcontrollers:

Arduino Pro Mini

It offers a precise quartz clock, required by the ultra sonic sensor to accurately determine the level of oil in the tank. But because it has a high consumption, it is not suited for battery powered devices.

ATTiny85

It has an inaccurate quartz clock that cannot be used for the sonar sensor, but it is more than enough to be used as a wake-up device for Arduino Pro Mini. Due to the very low power consumption, it is ideal for battery powered devices.

Mode of operation

ATTiny85 is connected directly to the battery and acts as a power switch:

  1. on regular intervals, ~6 hours, it powers on the Arduino Pro Mini
  2. Arduino Pro Mini will:
    • read the oil tank level
    • send the information to the RC Gateway
    • signal the ATTiny85 that it has finished
  3. turns off the Arduino Pro Mini

Schematics