Similiar - https://www.amazon.co.uk/ELEGOO-Ultrasonic-Raspberry-Datasheet-Available/dp/B01M0QL1F1/ref=sr_1_3?ie=UTF8&qid=1538926939&sr=8-3&keywords=hc-sr04
Accuracy from memory is +/- 3cm. However their is significant jitter. This is managed in Lua by -
local LDistance_MaxChange = tonumber ...
Search found 3 matches
- Sunday 07 October 2018 18:01
- Forum: Show your projects
- Topic: Central Heating Monitoring with graph and TV, email notification.
- Replies: 4
- Views: 1710
- Saturday 06 October 2018 20:47
- Forum: Show your projects
- Topic: Central Heating Monitoring with graph and TV, email notification.
- Replies: 4
- Views: 1710
Re: Central Heating Monitoring with graph and TV, email notification.
attached tv message, HC-sr04 US Sensor
- Friday 05 October 2018 17:52
- Forum: Show your projects
- Topic: Central Heating Monitoring with graph and TV, email notification.
- Replies: 4
- Views: 1710
Central Heating Monitoring with graph and TV, email notification.
Hello,
If anyone is interested I will post the code for the following requirement -
1 - Monitor time/hr a central heating burner is on.
2 - Monitor the external temperature/hr.
3 - Monitor the used oil/hr.
4 - Output 1-3 in graphical form each day.
5 - Output predefined minimum oil alarm via Samsung ...
If anyone is interested I will post the code for the following requirement -
1 - Monitor time/hr a central heating burner is on.
2 - Monitor the external temperature/hr.
3 - Monitor the used oil/hr.
4 - Output 1-3 in graphical form each day.
5 - Output predefined minimum oil alarm via Samsung ...