If you want a reliable connection, you should mount an external antenna. How far from the control point is the box?It is possible to use arduino LoRa modules for controlling solenoid lock inside safety box ?
About 8 meters, also there is some sensor inside safety box, that detect's when vibrate, puched, rotated, and similar actionIf you want a reliable connection, you should mount an external antenna. How far from the control point is the box?
For 8m LoRa is overkill. I would recommend you use the nRF24L01+PA+LNA module for the box since it have facilities for an external antenna and you can use the ordinary version for the control or the +PA+LNA version if you prefer.About 8 meters, also there is some sensor inside safety box, that detect's when vibrate, puched, rotated, and similar action
Yes... that linked is supervised, arduino is always monitored by raspberry Pi using ethernet, and arduino have unique response, so if response is tampered or arduino or lora inside safety box disconnected they triggered alarms, also make face recognition scan to hidden surveillance camera, if person is detected, siren can be triggerFor 8m LoRa is overkill. I would recommend you use the nRF24L01+PA+LNA module for the box since it have facilities for an external antenna and you can use the ordinary version for the control or the +PA+LNA version if you prefer.
I would also make the link supervised. That is, I would poll the box end from the control periodically to check that it is still operating. If it doesn't respond, you know you have a problem before you need the link to work and find out it is down.
But... how to prevent someone from break antenna ?, that safety box is contains many many copper, and copper theft rate is very highYes... that linked is supervised, arduino is always monitored by raspberry Pi using ethernet, and arduino have unique response, so if response is tampered or arduino or lora inside safety box disconnected they triggered alarms, also make face recognition scan to hidden surveillance camera, if person is detected, siren can be trigger
If you supervise the link, as I mentioned, if the antenna is broken you will get an alert when the poll fails.But... how to prevent someone from break antenna ?, that safety box is contains many many copper, and copper theft rate is very high
In my opinion the proper way to do this is with an external antenna, protected as well as possible, and a supervised link.Any case when expected box-made attenuation is ca 80-120 dB the LORA (7.30 USD) is much better choice than NRFL (0.99 USD). Lora is working in urban obstacles up to 3 km afar whilst NRFL may harvest the 1 km only at clear sight countryside obstacles.
Ok... if there is about 25kilograms of copper inside box, can RF modules be affected or distracted ?In my opinion the proper way to do this is with an external antenna, protected as well as possible, and a supervised link.
It makes no sense to me to put it inside an RF tight box and hope it gets enough signal to operate.
If there is an external antenna, the nRF24L01+ is completely adequate and cheaper.
If the antenna is mounted externally, and is fed with the proper coaxial cable, you will have no problem.Ok... if there is about 25kilograms of copper inside box, can RF modules be affected or distracted ?
All very abstract this, interesting,Ok... if there is about 25kilograms of copper inside box, can RF modules be affected or distracted ?
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