RS485 Sensors Iot

[HarshaX]

Machanla mama uni eke project eka kata level monitoring system ekak design karanava godak level measurement sensors use karanne me protocol eka mn electronics vadiya danne na mata ona me sensor eken ena data tika Firebase vage dB ekakata daganna danna aya help ekak denna.
Jaya Veva!

 

[Persiaus]

loku deyak nam danna machan. nodeMCU + firebase + android smart home app ekak nam karala thiyenawa.

use karana sensor eke link ekak ewanna balanna.

 

[FREEZZEER]

BUMP

 

[imhotep]

RS-485 is just another serial comms interface , like the RS-232. Normal serial ports in computers and devices are RS-232. The main difference between the RS-232 and RS-485 are...
RS-232 topology is a point to point protocol with a max distance of about 15m at 9600bps
whereas the RS-485 is a multi-point topology - You can connect several receivers and transmitters, usually up to 32 devices in a segment and can cover 1200m distance. Also RS-485 with 2 contacts operated in half duplex, with 4 contacts operate in full duplex.

Usually these sensors are Modbus compatible, a very old protocol used in the PLC devices, originally developed by Modicon.
Your sensor hardware manufacturer will possibly provide the comms software to read the data.