{"product_id":"m5stack-byte-switch-8-toggle-i2c-unit","title":"M5Stack Byte Switch Unit with 8x Switches (STM32G031)","description":"\u003cp\u003e\u003cvideo controls playsinline muted style=\"width:100%;height:auto;\"\u003e\u003csource type=\"video\/mp4\" src=\"https:\/\/m5stack.oss-cn-shenzhen.aliyuncs.com\/resource\/docs\/products\/unit\/Unit%20ByteSwitch\/U191%20BYTESWITCH%20UNIT%20Video.mp4\"\u003e\u003c\/video\u003e\u003c\/p\u003e\u003ch2\u003eM5Stack Byte Switch Unit for 8-Channel Physical Input\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eM5Stack Byte Switch\u003c\/strong\u003e Unit combines eight independent DPDT toggle switches, nine addressable RGB LEDs, and an STM32G031G8U6 controller in one compact input panel. It is designed for applications that need persistent physical switch states with immediate visual feedback.\u003c\/p\u003e\u003cp\u003eThe unit communicates through I2C at address 0x46 and provides two Grove I2C ports for bus expansion. This reduces host GPIO usage and makes it easier to add a bank of physical controls to an M5Stack controller or another compatible embedded host.\u003c\/p\u003e\u003ch2\u003eRead 8 Toggle States Through One I2C Device\u003c\/h2\u003e\u003cp\u003eEach switch can represent an enable flag, mode selection, channel state, scene selection, test condition, or other binary control. Because a mechanical toggle retains its position, the physical panel can show the commanded state even before a display is read. Design the firmware so startup behavior clearly defines whether hardware position overrides stored software state.\u003c\/p\u003e\u003ch3\u003eUse RGB LEDs for Status Feedback\u003c\/h3\u003e\u003cp\u003eNine WS2812C-2020 RGB LEDs can indicate channel state, warnings, active modes, or interaction feedback. Keep color meanings consistent across the interface and include a non-color cue when the state is critical, since color alone may not be sufficient for every operator.\u003c\/p\u003e\u003ch3\u003eCascade I2C Devices Carefully\u003c\/h3\u003e\u003cp\u003eThe two Grove ports support I2C bus expansion. Before combining multiple units or sensors, check address conflicts, total pull-up resistance, cable length, bus capacitance, and power distribution. I2C is best suited to local embedded connections rather than long industrial cable runs.\u003c\/p\u003e\u003ch2\u003eBuild Clear Control Panels\u003c\/h2\u003e\u003cp\u003eThe Byte Switch Unit fits smart-home panels, game controllers, education platforms, laboratory fixtures, interactive exhibits, instrument interfaces, and portable debugging tools. Label each switch according to the real function and avoid assigning safety-critical emergency functions to a general-purpose I2C input device.\u003c\/p\u003e\u003cp\u003eTechnical setup details are available in the \u003ca href=\"https:\/\/docs.m5stack.com\/en\/products\/sku\/U191\" target=\"_blank\" rel=\"noopener\"\u003eM5Stack ByteSwitch documentation\u003c\/a\u003e.\u003c\/p\u003e","brand":"LogicBoundless","offers":[{"title":"Default Title","offer_id":49240562303191,"sku":"LB-M5-U191","price":29.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/8952\/2135\/files\/1_d57add0c-cf30-49d2-a88f-925e92a106f4.webp?v=1783243373","url":"https:\/\/logicboundless.com\/products\/m5stack-byte-switch-8-toggle-i2c-unit","provider":"LogicBoundless","version":"1.0","type":"link"}