Ruieqing Platform: RK3506 Industrial Data Acquisition with RS485 + Modbus RTU Temperature/Humidity Sensors
This practical guide extends an RK3506 data-acquisition chain from local ADC channels to RS485 bus devices, reading temperature and humidity sensors over Modbus RTU.
Full article
This practical guide extends an RK3506 data-acquisition chain from local ADC channels to RS485 bus devices, reading temperature and humidity sensors over Modbus RTU.
Industrial sensors are often tens of metres away, beyond the reach of local ADCs, so bus-based acquisition becomes necessary — and with it, noise immunity and protection questions.
These designs use RS485 transceivers, isolation devices, ESD protection and the sensors themselves. Interface protection determines whether the system survives in the field. Kewei Technology recommends TVS diodes and resettable fuses on every RS485 port — a small cost that cuts field returns.
Kewei's take: what this means for procurement
These parts demand consistency, so substitution means checking range, accuracy and interface — an identical package is not enough.
Related component categories
For the component categories covered by this story we keep the common part numbers in stock. Browse by category, or send us your part list and we will quote the whole BOM.
Related parts in stock
All part numbers above are in stock or in transit. Order directly, or submit a BOM and we will match and quote it.
Authentic parts · Same-day shipping · Prototype and volume quantities