{ "format": "evn-blocks", "version": 3, "title": "Colour sensor: every block", "needs": "the colour sensor on I2C port 1, a white sheet, and something blue to hold under it", "description": "Every colour sensor block once: the colour it sees, its light level, the numbers behind the colour (hue, saturation, brightness, red, green, blue), and a shorter list of colours to choose from, after a black / white calibration the board keeps for the port.", "workspace": { "blocks": { "languageVersion": 0, "blocks": [ { "type": "evn_setup_start", "x": 30, "y": 30, "next": { "block": { "type": "evn_colorsensor_setup", "fields": { "PORT": "1" } } } }, { "type": "evn_program_start", "x": 30, "y": 115, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "calibrate once (the board keeps it for this port): black with nothing in front, then white" }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "shadow": { "type": "text", "fields": { "TEXT": "nothing in front of the sensor" } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 3000 } } } }, "next": { "block": { "type": "evn_colorsensor_calibrate", "fields": { "PORT": "1", "WHAT": "black" }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "shadow": { "type": "text", "fields": { "TEXT": "hold a white sheet in front of the sensor" } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 3000 } } } }, "next": { "block": { "type": "evn_colorsensor_calibrate", "fields": { "PORT": "1", "WHAT": "white" }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "the colour it sees, ten times: move coloured things under the sensor" }, "next": { "block": { "type": "controls_repeat_ext", "inputs": { "TIMES": { "shadow": { "type": "math_number", "fields": { "NUM": 10 } } }, "DO": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "evn_colorsensor_color", "fields": { "PORT": "1" } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 300 } } } } } } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "how bright it is (% of full scale), and the numbers behind the colour" }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "light level % " } } }, "ADD1": { "block": { "type": "evn_colorsensor_ambient", "fields": { "PORT": "1" } } } } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "hue " } } }, "ADD1": { "block": { "type": "evn_colorsensor_channel", "fields": { "PORT": "1", "WHAT": "hsv().h" } } } } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "saturation " } } }, "ADD1": { "block": { "type": "evn_colorsensor_channel", "fields": { "PORT": "1", "WHAT": "hsv().s" } } } } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "brightness " } } }, "ADD1": { "block": { "type": "evn_colorsensor_channel", "fields": { "PORT": "1", "WHAT": "hsv().v" } } } } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "red " } } }, "ADD1": { "block": { "type": "evn_colorsensor_channel", "fields": { "PORT": "1", "WHAT": "rgb()[0]" } } } } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "green " } } }, "ADD1": { "block": { "type": "evn_colorsensor_channel", "fields": { "PORT": "1", "WHAT": "rgb()[1]" } } } } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "blue " } } }, "ADD1": { "block": { "type": "evn_colorsensor_channel", "fields": { "PORT": "1", "WHAT": "rgb()[2]" } } } } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "choose only from blue, white and nothing: then look for blue for 5 s" }, "next": { "block": { "type": "evn_colorsensor_detect", "fields": { "PORT": "1", "RED": "FALSE", "YELLOW": "FALSE", "GREEN": "FALSE", "BLUE": "TRUE", "WHITE": "TRUE", "NONE": "TRUE" }, "next": { "block": { "type": "controls_repeat_ext", "inputs": { "TIMES": { "shadow": { "type": "math_number", "fields": { "NUM": 25 } } }, "DO": { "block": { "type": "controls_if", "inputs": { "IF0": { "block": { "type": "evn_colorsensor_sees", "fields": { "PORT": "1", "COLOR": "BLUE" } } }, "DO0": { "block": { "type": "text_print", "inputs": { "TEXT": { "shadow": { "type": "text", "fields": { "TEXT": "blue!" } } } } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 200 } } } } } } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "back to all six colours" }, "next": { "block": { "type": "evn_colorsensor_detect", "fields": { "PORT": "1", "RED": "TRUE", "YELLOW": "TRUE", "GREEN": "TRUE", "BLUE": "TRUE", "WHITE": "TRUE", "NONE": "TRUE" } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } ] } } }