Sub-GHz Wireless Serial Integration | Obeita
Delivered project. The completed hardware and software met the customer’s agreed requirements in testing. Specifications for a new project must be agreed separately.
Obeita completed a sub-GHz wireless serial integration project, developing the agreed hardware and software for a serial-to-radio connection. The project covered customer requirements, contract confirmation, design, physical testing and delivery.
Defining what crosses the wireless link
The technical objective was to carry selected low-rate serial traffic over a radio path while defining how a message reaches its destination. Obeita completed the customer’s agreed integration scope. The documented architecture includes transparent, addressed and master-node routing patterns, each with different expectations for host framing and node behavior.
Transparent peers exchange data using shared address/channel settings. Addressed traffic specifies a destination address and channel. In a master-node arrangement, the master selects the destination node, and node reports return to the master on the shared channel. These are architecture choices; a project needs one coherent rule for message ownership, transmission timing, collisions and missing responses.
Host signals and power behavior
UART RX/TX forms the host data path. The documented signal set also includes direction control for an RS485 interface design, reset and TX/RX status. The RF antenna connection is separate from the serial interface, so host wiring and radio placement belong to different parts of the integration.
Normal and low-power variants remain qualified design choices. A sleep or air-wake behavior needs to match the reporting interval, acceptable wake delay and host sleep state. A standalone module current figure cannot describe the energy use of the complete connected device.
Keeping the frequency scope explicit
The public material identifies a 470 MHz/sub-GHz direction, but its labels and parameter tables do not establish one consistent operating range. Exact tuning range, output power and permitted channels therefore remain selection items for the destination market. The serial-radio architecture also does not by itself establish LoRaWAN joining, security or network-server compatibility.
Documented architecture and configuration
This table records the project’s documented architecture and selection boundaries. Options, variants and design inputs remain qualified as shown; their inclusion here is not an independent guarantee that every option formed part of the delivered configuration.
| Item | Configuration |
|---|---|
| Link type | Sub-GHz serial radio |
| Routing modes | Transparent / addressed / master-node |
| Host signals | UART RX/TX, direction, reset, TX/RX status |
| Antenna | External RF antenna connection |
| Power modes | Normal / low-power variant evaluation |
| Frequency decision | 470 MHz direction; exact range and market suitability to confirm |
Delivered serial-radio integration
Obeita delivered the agreed hardware and software implementation after physical testing. The tested functions met the customer’s requirements. This result applies to the project’s agreed link configuration; it does not publish a distance, packet-loss, sensitivity or battery-life guarantee, or resolve every market-specific frequency option in the public material.
For a similar link, payload size, update interval and node roles should drive mode selection and test planning. Frequency suitability and antenna installation need to be defined for the new deployment rather than inherited from the platform description.
Plan a similar sub-GHz serial link
Send Obeita the destination country, host interface, node topology, packet size, reporting interval and power budget. These inputs define the routing, firmware and physical-test scope for your wireless serial connection.