{"id":6387,"date":"2026-01-31T23:36:53","date_gmt":"2026-01-31T22:36:53","guid":{"rendered":"https:\/\/mumio.dev\/produkt\/serial-interface-board-gpio-usb-uart-i2c-mumio-dev-03\/"},"modified":"2026-01-31T23:36:53","modified_gmt":"2026-01-31T22:36:53","slug":"serial-interface-board-gpio-usb-uart-i2c-mumio-dev-03","status":"publish","type":"product","link":"https:\/\/mumio.dev\/en\/shop\/serial-interface-board-gpio-usb-uart-i2c-mumio-dev-03\/","title":{"rendered":"Serial Interface Board (GPIO, USB, UART, I2C) &#8211; MUMIO dev. #03"},"content":{"rendered":"<p class=\"def\">Serial communication interface for ZX Spectrum computers. It allows your ZX Spectrum computer to communicate via: <\/p>\n<ul class=\"def\">\n<li class=\"def\"><strong class=\"def\">USB<\/strong> &#8211; as a virtual COM port installed on PCs<\/li>\n<li class=\"def\"><strong class=\"def\">UART<\/strong> &#8211; (RS-232 equivalent on TTL signals), with speeds up to 57600 baud<\/li>\n<li class=\"def\"><strong class=\"def\">I2C <\/strong>&#8211; for communication with small Arduino accessories<\/li>\n<li class=\"def\"><strong class=\"def\">GPIO<\/strong> &#8211; parallel communication and I\/O ports &#8211; located on the I\/O board (<a class=\"def\" href=\"https:\/\/mumio.dev\/sklep\/Karta-portu-wejscia-wyjscia-8-x-GPIO-MUMIO-dev-00-p64\" rel=\"nofollow\">MUMIO #00<\/a>)<\/li>\n<\/ul>\n<p class=\"def\">This interface allows communication with external peripherals using the most popular communication protocols in automation: UART (RS-232), I2C, and USB. Thanks to this interface, you can connect most Arduino-dedicated devices and accessories to your ZX Spectrum computer: <\/p>\n<ul class=\"def\">\n<li class=\"def\"><strong class=\"def\">temperature, pressure sensors<\/strong> (e.g., LPS331AP, BMP280), <strong class=\"def\">pollution sensors<\/strong><\/li>\n<li class=\"def\"><strong class=\"def\">RTC clocks<\/strong> (e.g., DS1307)<\/li>\n<li class=\"def\"><strong class=\"def\">LCD displays<\/strong><\/li>\n<li class=\"def\"><strong class=\"def\">relays<\/strong><\/li>\n<li class=\"def\"><strong class=\"def\">I\/O port expanders<\/strong> (GPIO)<\/li>\n<li class=\"def\"><strong class=\"def\">stepper motor drivers<\/strong><\/li>\n<li class=\"def\"><strong class=\"def\">electric motor drivers<\/strong> with speed control (e.g., DRV8830)<\/li>\n<li class=\"def\"><strong class=\"def\">model servo drivers<\/strong> (e.g., PCA9685 &#8211; 16 servos)<\/li>\n<li class=\"def\"><strong class=\"def\">LED drivers<\/strong> (e.g., PCA9685)<\/li>\n<li class=\"def\"><strong class=\"def\">EPROM memories<\/strong> (e.g., AT24Cxx)<\/li>\n<li class=\"def\">and many, many more&#8230;<\/li>\n<\/ul>\n<p class=\"def\">An 8-page user manual is included with the device. The example robotic arm set with servos shown in the last two photos is not part of the offer. <\/p>\n<p class=\"def\"><strong class=\"def\">Note!<br class=\"def\"><\/strong>For proper operation, the serial interface board (MUMIO dev. #03) must be mounted on the I\/O Port board &#8211; <a class=\"def\" href=\"https:\/\/mumio.dev\/sklep\/Karta-portu-wejscia-wyjscia-8-x-GPIO-MUMIO-dev-00-p64\" rel=\"nofollow\">MUMIO dev. #00<\/a>.<\/p>\n<p class=\"def\"><strong class=\"def\">WHAT IS MUMIO?<\/strong><br class=\"def\">MUMIO is the equivalent of Arduino peripherals, adapted for control from a ZX Spectrum computer. These can include sensors, displays, motors, servos, relays, joystick interfaces, clocks, UART, USB, I2C, SPI interfaces, and many, many more\u2026 MUMIO devices are installed on the I\/O board (dev. #00), connected to the ZX Spectrum edge connector. <\/p>\n<p class=\"def\">Read more about MUMIO on the website: <a class=\"def\" href=\"https:\/\/mumio.dev\/en\/\" rel=\"nofollow\">https:\/\/mumio.dev<\/a><\/p>\n<p class=\"def\"><strong class=\"def\">PDF DOCUMENTATION (English only):<\/strong><br class=\"def\"><a class=\"def\" href=\"https:\/\/mumio.dev\/wp-content\/uploads\/2023\/10\/03_Serial_EN.pdf\" rel=\"nofollow\">https:\/\/mumio.dev\/wp-content\/uploads\/2023\/10\/03_Serial_EN.pdf<\/a><br class=\"def\"> <br class=\"def\"><strong class=\"def\">MORE INFORMATION ABOUT THE DEVICE:<\/strong><br class=\"def\"><a class=\"def\" href=\"https:\/\/mumio.dev\/en\/serial-interface-dev-03\/\" rel=\"nofollow\">https:\/\/mumio.dev\/?p=207<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Serial Interface Board (GPIO, USB, UART, I2C) &#8211; MUMIO dev. #03<\/p>\n","protected":false},"featured_media":5761,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[37],"product_tag":[],"class_list":{"0":"post-6387","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-expansion-cards","8":"first","9":"outofstock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/product\/6387","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/comments?post=6387"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/media\/5761"}],"wp:attachment":[{"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/media?parent=6387"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/product_brand?post=6387"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/product_cat?post=6387"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mumio.dev\/en\/wp-json\/wp\/v2\/product_tag?post=6387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}