{ "format": "evn-blocks", "version": 3, "title": "Board: every block", "needs": "nothing but the board; you press the user button when it asks", "description": "Every board and timing block once: the battery, the user button, the LED, waiting and the stopwatch. After the tour the LED follows the button until 20 s have gone by, then the program waits forever: press Stop to end it.", "workspace": { "blocks": { "languageVersion": 0, "blocks": [ { "type": "evn_setup_start", "x": 30, "y": 30 }, { "type": "evn_program_start", "x": 30, "y": 115, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "the battery pack, in millivolts (0 without a pack), and whether it is low" }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "battery (mV): " } } }, "ADD1": { "block": { "type": "evn_battery_voltage" } }, "ADD2": { "shadow": { "type": "text", "fields": { "TEXT": ", low (below 6.6 V: about 30 min of driving left): " } } }, "ADD3": { "block": { "type": "evn_battery_low", "inputs": { "THRESHOLD": { "shadow": { "type": "math_number", "fields": { "NUM": 6600 } } } } } } }, "extraState": { "itemCount": 4 } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "start from the board: wait for a press and release of the user button" }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "shadow": { "type": "text", "fields": { "TEXT": "press the user button to start" } } } }, "next": { "block": { "type": "evn_wait_for_button", "next": { "block": { "type": "evn_stopwatch_reset", "fields": { "ACTION": "reset" }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "the LED: on, off, toggle, or set from a true/false value" }, "next": { "block": { "type": "evn_led", "fields": { "ACTION": "on" }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 500 } } } }, "next": { "block": { "type": "evn_led", "fields": { "ACTION": "off" }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 500 } } } }, "next": { "block": { "type": "controls_repeat_ext", "inputs": { "TIMES": { "shadow": { "type": "math_number", "fields": { "NUM": 6 } } }, "DO": { "block": { "type": "evn_led", "fields": { "ACTION": "toggle" }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 200 } } } } } } } } }, "next": { "block": { "type": "evn_led_set", "inputs": { "ON": { "block": { "type": "logic_boolean", "fields": { "BOOL": "FALSE" } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "stopwatch (ms): " } } }, "ADD1": { "block": { "type": "evn_stopwatch_time" } } } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "a paused stopwatch does not count: this wait is left out" }, "next": { "block": { "type": "evn_stopwatch_reset", "fields": { "ACTION": "pause" }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 1000 } } } }, "next": { "block": { "type": "evn_stopwatch_reset", "fields": { "ACTION": "resume" }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "block": { "type": "text_join", "inputs": { "ADD0": { "shadow": { "type": "text", "fields": { "TEXT": "stopwatch (ms), still about the same: " } } }, "ADD1": { "block": { "type": "evn_stopwatch_time" } } } } } }, "next": { "block": { "type": "evn_comment", "fields": { "TEXT": "wait until a condition is true: here, 5 s on the stopwatch" }, "next": { "block": { "type": "evn_wait_until", "inputs": { "COND": { "block": { "type": "logic_compare", "fields": { "OP": "GT" }, "inputs": { "A": { "block": { "type": "evn_stopwatch_time" } }, "B": { "shadow": { "type": "math_number", "fields": { "NUM": 5000 } } } } } } }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "shadow": { "type": "text", "fields": { "TEXT": "now the LED follows the button for 20 s" } } } }, "next": { "block": { "type": "evn_forever", "inputs": { "DO": { "block": { "type": "evn_led_set", "inputs": { "ON": { "block": { "type": "evn_button_pressed" } } }, "next": { "block": { "type": "controls_if", "inputs": { "IF0": { "block": { "type": "logic_compare", "fields": { "OP": "GT" }, "inputs": { "A": { "block": { "type": "evn_stopwatch_time" } }, "B": { "shadow": { "type": "math_number", "fields": { "NUM": 25000 } } } } } }, "DO0": { "block": { "type": "evn_led", "fields": { "ACTION": "off" }, "next": { "block": { "type": "text_print", "inputs": { "TEXT": { "shadow": { "type": "text", "fields": { "TEXT": "done: press Stop to end the program" } } } }, "next": { "block": { "type": "evn_wait_forever" } } } } } } }, "next": { "block": { "type": "evn_wait", "inputs": { "TIME": { "shadow": { "type": "math_number", "fields": { "NUM": 20 } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } ] } } }