{ "format": "evn-blocks", "version": 3, "title": "LED matrix: every block", "needs": "the 8x8 LED matrix on I2C port 1", "description": "Every LED matrix block once: icons, numbers, scrolling text, one letter, single pixels and the brightness, ending with a blank matrix at full brightness.", "workspace": { "blocks": { "languageVersion": 0, "blocks": [ { "type": "evn_setup_start", "x": 30, "y": 30, "next": { "block": { "type": "evn_matrix_setup", "fields": { "PORT": "1" } } } }, { "type": "evn_program_start", "x": 30, "y": 115, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "pictures: a few of the built-in icons" }, "next": { "block": { "type": "evn_matrix_icon", "fields": { "PORT": "1", "ICON": "HAPPY" }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 1000 } } } }, "next": { "block": { "type": "evn_matrix_icon", "fields": { "PORT": "1", "ICON": "ARROW_UP" }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 1000 } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "brightness 1 (dim) .. 16 (bright, where it starts); the whole matrix at once" }, "next": { "block": { "type": "controls_for", "fields": { "VAR": { "id": "v_level" } }, "inputs": { "FROM": { "shadow": { "type": "math_number", "fields": { "NUM": 1 } } }, "TO": { "shadow": { "type": "math_number", "fields": { "NUM": 16 } } }, "BY": { "shadow": { "type": "math_number", "fields": { "NUM": 1 } } }, "DO": { "block": { "type": "evn_matrix_brightness", "fields": { "PORT": "1" }, "inputs": { "LEVEL": { "block": { "type": "variables_get", "fields": { "VAR": { "id": "v_level" } } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 100 } } } } } } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "numbers -99 .. 99" }, "next": { "block": { "type": "controls_for", "fields": { "VAR": { "id": "v_n" } }, "inputs": { "FROM": { "shadow": { "type": "math_number", "fields": { "NUM": -3 } } }, "TO": { "shadow": { "type": "math_number", "fields": { "NUM": 3 } } }, "BY": { "shadow": { "type": "math_number", "fields": { "NUM": 1 } } }, "DO": { "block": { "type": "evn_matrix_number", "fields": { "PORT": "1" }, "inputs": { "NUMBER": { "block": { "type": "variables_get", "fields": { "VAR": { "id": "v_n" } } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 500 } } } } } } } } }, "next": { "block": { "type": "evn_matrix_number", "fields": { "PORT": "1" }, "inputs": { "NUMBER": { "shadow": { "type": "math_number", "fields": { "NUM": 42 } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 1000 } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "text: one letter at a time; the program waits until it is over" }, "next": { "block": { "type": "evn_matrix_text", "fields": { "PORT": "1" }, "inputs": { "TEXT": { "shadow": { "type": "text", "fields": { "TEXT": "EVN" } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "one letter that stays" }, "next": { "block": { "type": "evn_matrix_char", "fields": { "PORT": "1" }, "inputs": { "CHAR": { "shadow": { "type": "text", "fields": { "TEXT": "A" } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 1000 } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "single pixels: row from the top, column from the left, 0 .. 7" }, "next": { "block": { "type": "evn_matrix_clear", "fields": { "PORT": "1" }, "next": { "block": { "type": "controls_for", "fields": { "VAR": { "id": "v_i" } }, "inputs": { "FROM": { "shadow": { "type": "math_number", "fields": { "NUM": 0 } } }, "TO": { "shadow": { "type": "math_number", "fields": { "NUM": 7 } } }, "BY": { "shadow": { "type": "math_number", "fields": { "NUM": 1 } } }, "DO": { "block": { "type": "evn_matrix_pixel", "fields": { "PORT": "1", "ON": "TRUE" }, "inputs": { "ROW": { "block": { "type": "variables_get", "fields": { "VAR": { "id": "v_i" } } } }, "COL": { "block": { "type": "variables_get", "fields": { "VAR": { "id": "v_i" } } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 150 } } } } } } } } }, "next": { "block": { "type": "controls_for", "fields": { "VAR": { "id": "v_i" } }, "inputs": { "FROM": { "shadow": { "type": "math_number", "fields": { "NUM": 0 } } }, "TO": { "shadow": { "type": "math_number", "fields": { "NUM": 7 } } }, "BY": { "shadow": { "type": "math_number", "fields": { "NUM": 1 } } }, "DO": { "block": { "type": "evn_matrix_pixel", "fields": { "PORT": "1", "ON": "FALSE" }, "inputs": { "ROW": { "block": { "type": "variables_get", "fields": { "VAR": { "id": "v_i" } } } }, "COL": { "block": { "type": "variables_get", "fields": { "VAR": { "id": "v_i" } } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 150 } } } } } } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "the end: a blank matrix" }, "next": { "block": { "type": "evn_matrix_clear", "fields": { "PORT": "1" } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } ] }, "variables": [ { "name": "level", "id": "v_level" }, { "name": "n", "id": "v_n" }, { "name": "i", "id": "v_i" } ] } }