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HT-Edge Standard

HT-Edge Standard

The reference edge gateway for unattended sites: multi-drop RS485 sensing, independent 12 V power rails for pumps/valves/cameras, and remote reboot when Linux or peripherals hang.

Why it exists

  • Field crews cost more than a scheduled power cycle — switch loads remotely.
  • Sensors often need 12 V bias on the same 4-wire run — provide it from the gateway.
  • Store-and-forward is built into the edge agent: history survives network gaps.
  • Open files (BOM, Gerber, BSP) let you fork the design under NRE.

System overview

[ RS485 sensors / meters ] —> 4× RS485 · CAN · GPIO · USB
                                 |
                                 v
            NUC980 (Linux / OpenWrt) — edge agent · MQTT · OTA · store-and-forward
                                 |
                                 +– Ethernet / Wi-Fi / optional 4G · LoRa –> Cloud & App
                                 +– 3× 12V relay outputs –> pumps · valves · cameras · USB power

Specifications

SoC Nuvoton NUC980DK61YC (ARM9 @ 300 MHz, SiP 64 MB DDR2, LQFP-128)
Storage SPI NAND / flash (W29N02G or compatible) + optional SD
RS485 4 channels, 4-pin (A, B, +, −) with sensor bias power
CAN 1× CANbus (CANH / CANL / 12 V / GND)
Relay 3× 12 V power-control outputs (HF46F class); motor / USB rail control on reference design
Ethernet 100M RJ45 (LAN8720 + HR911105A)
Wireless Wi-Fi + BT module on board; 4G / LoRa optional miniPCIe
GPIO / USB 1× GPIO input; USB host for collection & peripherals
Power 12 V DC full function · 5 V low-power collection mode
PCB FR4 4-layer, 1.6 mm, 130×81 mm (reference Edge rev.)
OS Linux / OpenWrt BSP (open releases) · RTOS optional path
Sampling ≈10 ms class real-time acquisition (configurable)
Environment TBD — confirm operating temp / EMC with sales before order

Downloads & custom