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WiFi is convenient but not always reliable or even available - a workshop with metal shielding, an industrial floor with RF interference, or a permanent installation wanting guaranteed uptime often calls for a plain wired Ethernet connection instead. This module gives any SPI-capable microcontroller exactly that, using the Microchip ENC28J60 controller to handle the entire Ethernet MAC and 10Base-T physical layer, converting raw Ethernet frames into a simple SPI interface the host reads and writes.
Running its SPI interface at up to 20MHz keeps data throughput reasonable despite Ethernet's higher overhead compared to a simple UART link, and built-in automatic collision retransmission plus faulty-packet rejection are handled entirely in hardware rather than needing to be reimplemented in microcontroller firmware. A 25MHz crystal and the industry-standard HanRun HR911105A magnetics-integrated RJ45 jack round out a complete, self-contained networking solution on one small board.
Common uses are industrial or workshop IoT nodes needing a reliable wired connection immune to WiFi interference, permanent server-style embedded projects wanting guaranteed network uptime, and legacy or education projects specifically teaching raw Ethernet/TCP-IP stack implementation on a microcontroller.
| Brand | Generic |
|---|---|
| Driver IC | ENC28J60 |
| Selling unit | PCS |
