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* Adapters [[USB-RS-232]]. Up to two cables without using an external USB hub. Possible programmatic [[LAN951x port power control/en|power supply reboot ]] | * Adapters [[USB-RS-232]]. Up to two cables without using an external USB hub. Possible programmatic [[LAN951x port power control/en|power supply reboot ]] | ||
=== = RS-485==== | ==== RS-485==== | ||
* https://www.olimex.com/Products/Modules/Interface/MOD-RS485-ISO/ galvanically isolated, full/half duplex, I2C interface, can be used in conjunction with [[Debug UART]] and [[RS-485]]. It is possible to connect more than two devices. | * https://www.olimex.com/Products/Modules/Interface/MOD-RS485-ISO/ galvanically isolated, full/half duplex, I2C interface, can be used in conjunction with [[Debug UART]] and [[RS-485]]. It is possible to connect more than two devices. | ||
* https://www.olimex.com/Products/Modules/Interface/MOD-RS485 - half duplex, uses UART. Up to two modules. | * https://www.olimex.com/Products/Modules/Interface/MOD-RS485 - half duplex, uses UART. Up to two modules. | ||
=== | === Contactless card readers and keyboards=== | ||
====Wiegand==== | ==== Wiegand==== | ||
* | * Connect the lines D0 and D1 of the readers to the GPIO through a resistor 1-20 kom! (on Wiren Board 2.8) | ||
* | * See https://github.com/contactless/wirenboard/tree/master/examples/wiegand | ||
* | * See https://github.com/contactless/wiegand-linux | ||
=== | ===Meters === | ||
[[Приборы учёта с импульсным выходом]] | [[Приборы учёта с импульсным выходом/en| Metering devices with pulse output]] | ||
===Modbus | ===Modbus devices=== | ||
[[Устройства с интерфейсом Modbus]] | [[Устройства с интерфейсом Modbus/en |Devices with Modbus interface]] | ||
=== | === Buttons and dry contacts === | ||
See [[Приборы учёта с импульсным выходом/en| Metering devices with pulse output]] | |||