Arduino based device acting as:

• metronome, for exercises that require timing,
• countdown timer, for rest between exercises,
• thermometer / hygrometer - when not uses for exercises.

Part list:

• Arduino MKR 1010 (ABX00023)
• Arduino MKR Connector Carrier, Grove compatible (ASX00007)
• BME280 sensor (Seeed Studio SEE-11355)
• quad, alphanumeric (14-segment), HT16K33 based display (SeedStudio SEE-14733)
• push button with backlight (Seeed Studio SEE-13660)
• passive buzzer (Seeed Studio SEE-17268)
• I2C 6 port hub (Seeed Studio SEE-15856)
• cables - as required All modules based on Grove connections and cables.

All modules are connected to Arduino through Connector Carrier:

• buzzer - port D0,
• button - port D5,
• I2C hub - port TWI,
• sensor and display - to hub (any port)