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a PCB & 3D-printed clementine-themed clock for alarms & timers s

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themagicfrog/clementine-clock

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clementine clock

this is an orange/mandarin-themed clock to set timers & alarms for my room. I decided to make a clock because I usually don't have access to my phone when I go to sleep at school, and I needed an easy way to know the time and to wake up at the right time. I chose a clementine theme because I like oranges.ges.s.

on the main PCB board, there is a 4-digit 7-segment LCD display (showing the time), a small button, and a speaker. there is also wires on the main PCB board connecting a rotary encoder (adjusting the time) on the top of the orange, a 3 AA battery case, and a big button (snooze & stop) at the "stem" of the clementine. the case is a 3D-printed cylindrical clementine case.ase.e.

3dfront 3dback

pcb schematic

bill of materials

Reference Item Description Qty Unit Price (USD) Total (USD) URL
U1 Microcontroller Seeed XIAO RP2040 1 4.68 4.68 https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/102010428/14672129
J1_DISPLAY LCD Display Grove LCD Screen (104030003) 1 6.50 6.50 https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/104030003/5488009
U2 Voltage Regulator MIC5219-3.3YM5 3.3V LDO 1 1.19 1.19 https://www.digikey.com/en/products/detail/microchip-technology/MIC5219-3-3YM5-TR/771750
U3 Audio Amplifier PAM8302AAD 1 0.48 0.48 https://www.digikey.com/en/products/detail/diodes-incorporated/pam8302aadcr/4033280
LS1 Speaker SC250708-1 8Ω Speaker 1 2.96 2.96 https://www.digikey.com/en/products/detail/db-unlimited/SC250708-1/9990569
SW1 Rotary Encoder ACZ11BR4E-15FD1-20C 1 3.22 3.22 https://www.digikey.com/en/products/detail/same-sky-formerly-cui-devices/acz11br4e-15fd1-20c/1923364
SW2 Pushbutton (Big) RP3502ARED 1 2.29 2.29 https://www.digikey.com/en/products/detail/e-switch/RP3502ARED/280448
SW3 Pushbutton (Small) Y97HT21A2FAFP 1 0.24 0.24 https://www.digikey.com/en/products/detail/c-k/Y97HT21A2FAFP/3861375
SW4 Power Switch PCM12SMTR slide SPST 1 1.14 1.14 https://www.digikey.com/en/products/detail/c-k/PCM12SMTR/1640112
BT1_HOLDER Battery Holder Kitronik 2273 3×AAA w/ JST 1 1.87 1.87 https://www.digikey.com/en/products/detail/kitronik-ltd/2273/8635437
BT1 Battery Connector B2B-PH-K-S JST-PH 2-pin header 1 0.10 0.10 https://www.digikey.com/en/products/detail/jst-sales-america-inc/B2B-PH-K-S/926611
J1 LCD Header PRPC004SAAN-RC 1×4 2.54mm 1 0.34 0.34 https://www.digikey.com/en/products/detail/adam-tech/RS1-04-G/9829303
C1 Capacitor 10µF 10V X7R 0805 1 1.02 1.02 https://www.digikey.com/en/products/detail/kemet/c0805x106j8rac7210/7423434
C2 Capacitor 22µF 10V X5R 0805 1 0.15 0.15 https://www.digikey.com/en/products/detail/yageo/CC0805MKX5R7BB226/5195308
C3 Capacitor 0.22µF 50V X7R 0805 1 0.15 0.15 https://www.digikey.com/en/products/detail/kemet/c0805c224k5ractu/754753
C4 Capacitor 1µF 50V X7R 0805 1 0.81 0.81 https://www.digikey.com/en/products/detail/kemet/C0805C105K5RACTU/3317615
C5 Capacitor 10nF 250V 0805 1 0.08 0.08 https://www.digikey.com/en/products/detail/kemet/C0805C103F5GECAUTO/8647276
C6 Capacitor 4.7µF 50V X5R 0805 1 0.19 0.19 https://www.digikey.com/en/products/detail/murata-electronics/grm21br61h475ke51l/4905540
R1 Resistor 100kΩ 1% 0805 1 0.10 0.10 https://www.digikey.com/en/products/detail/stackpole-electronics-inc/rmcf0805ft100k/1760712
R2 Resistor 1kΩ 1% 0805 1 0.10 0.10 https://www.digikey.com/en/products/detail/stackpole-electronics-inc/rmcf0805ft1k00/1760090
D1 LED Red 0805 LED 1 0.19 0.19 https://www.digikey.com/en/products/detail/würth-elektronik/150080RS75000/4489918
TOTAL — — — Tax + Shipping = 3.12 44.26

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a PCB & 3D-printed clementine-themed clock for alarms & timers s

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