Digitálne Hodinky s Alarmom

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Clarifying component details.

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Analyzing user intents.

Searching for components and fixing errors.

Using Knowledge Base Tool.

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Adding components and instructions.

Áno, bude to fungovať – stačí opraviť tieto chyby. Nižšie máš jednoduchý návod „A -> B“ a odkazy na diely z Techfun. Opravy sú krátke.

Čo teraz hlási kontrola v projekte

Chýba napájanie pre MCU, U1, RTC.
Net SCL má len jeden pin (SCL z RTC nie je pripojený na MCU).
Generické súčiastky bez MPN: R1, R2, R3, R4, C1.

Ako opraviť (jednoduché kroky)

Napájanie 3× AA

bat -> D1 Anóda.
D1 Katóda -> SW1 stredný pin.
SW1 výstupný pin -> Net „VCC“ (u teba je to RTC).
bat- -> Ground.
C1 10uF: P1 -> VCC, P2 -> Ground.
Pozn.: Schottky dióda je OK kvôli ochrane polarity.

I2C SCL chýba

MCU PC5 (SCL) -> RTC SCL.
MCU PC4 (SDA) už ide -> RTC SDA (nechaj).
Pull‑upy:
- R1 4.7k: P1 -> SDA, P2 -> VCC.
- R2 4.7k: P1 -> SCL, P2 -> VCC.
Tip pre batérie: môžeš dať 10k namiesto 4.7k (nižší trvalý odber). Limit kapacity zbernice je 400 pF.

Decoupling (100 nF)

C2 100nF: P1 -> VCC MCU, P2 -> Ground. Umiestni blízko pinov.
C3 100nF: P1 -> VCC RTC, P2 -> Ground.
C4: nechaj AREF -> Ground (je OK).

Tlačidlá (použiješ 3 kusy)

SW2 -> MODE: Pin1 -> Ground, Pin2 -> MCU PB0.
SW5 -> +1: Pin1 -> Ground, Pin2 -> MCU PB1.
SW6 -> −1: Pin1 -> Ground, Pin2 -> MCU PB2.
V MCU zapni interné pull‑upy na PB0, PB1, PB2.

Displej TM1637

U1 VCC -> VCC. GND -> Ground.
U1 DIO -> MCU PD4.
U1 CLK -> MCU PD3.

Vymeň „Generic“ diely za reálne (zmiznú MPN chyby)

R1 4.7kΩ -> vymeň za: RC0805FR-074K7L alebo 4.7kΩ 0603 Resistor
R2 4.7kΩ -> vymeň rovnako ako R1.
R3 1kΩ -> CRCW08051K00FKEA
R4 10kΩ -> zvoľ z knižnice: 10k Resistor
C1 10uF -> 10uF 0603 Capacitor (Murata GRM188R61E106MA73D) alebo C1206X106K016T (10uF 16V 1206)

Nakúpiš na Techfun (čo potrebné reálne nájdeš)

2N2222 NPN tranzistor (ak chceš bzučiak s tranzistorom): https://techfun.sk/produkt/bjt-npn-tranzistor-2n2222-800ma/?utm_source=openai
Bzučiak 5 V (vyber si jeden):
- Pasívny buzzer 5 V: https://techfun.sk/produkt/pasivny-bzuciak-1740/?utm_source=openai
- Aktívny buzzer 5 V: https://techfun.sk/produkt/aktivny-buzzer/?utm_source=openai
Rezistory a kondenzátory (Techfun má hlavne sady):
- Kniha SMD súčiastok – aj rezistory/kondenzátory 0603: https://techfun.sk/produkt/kniha-smd-suciastok-rozne-verzie/?utm_source=openai
- Zostavy/kity s 4.7k, 10k, 1k, 100nF:
Schottky dióda, ak by si nemal SS14:
- SR260 (alternatíva): https://techfun.sk/produkt/schottkyho-dioda-sr260-2a-60v/?utm_source=openai
Držiak batérií:
- Techfun momentálne neukazuje 3×AA ako samostatný produkt. Môžeš použiť svoj vlastný 3×AA držiak a pripojiť ho na bat/bat-, alebo zobrať 2×AA držiak + jeden článok zvlášť, prípadne iný 3×AA držiak od iného predajcu.

Voliteľné zapojenie bzučiaka (ak ho pridáš)

Buzzer „+“ -> VCC.
Buzzer „−“ -> Kolektor 2N2222.
2N2222 Emitter -> Ground.
MCU pin -> 1k -> Báza 2N2222.
10k -> Báza 2N2222 -> Ground.
(Ak pasívny magnetický buzzer) dióda paralelne cez buzzer: Katóda -> „+“, Anóda -> „−“.

Po tomto by mali zmiznúť chyby

„Missing Power“ zmizne po pripojení [+bat] a [bat-] tak, ako je hore.
„Single pin net“ zmizne po spojení PC5 (SCL) -> SCL [RTC].
„Manufacturer Part Number“ zmizne po výmene [R1]–[R4] a [C1] za reálne diely z knižnice.

Chceš, aby som tieto úpravy spravil priamo v projekte (pripojiť SCL, dopojiť napájanie, nastaviť pull‑upy a nahradiť generiky za diely s MPN)? Stačí napísať „Áno“ a idem na to.

Chcem opraviť napájanie

Chcem pridať I2C pull-upy

Chcem vyriešiť generické diely

Skontroluj DS3231 napájanie

Upresním batériový držiak

43 days

Ready to start.

Show Plan

MCU

Not Recommended for New Designs

Capacitance

10uF

Reviews

Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
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Power Net Portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
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11.4M
Generic Resistor
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
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Generic Inductor
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jharwinbarrozo
15.5k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
jharwinbarrozo
1.2M
875105359001
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1.2M
CTL1206FYW1T
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1.1M

Project Name

Spare Indigo Power Laces

Description

digital clock

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Arrow	$10.27–$17.26
Digi-Key	$21.23–$27.12
LCSC	$17.05–$18.75
Mouser	$27.07–$27.13
TME	$3.53
Verical	$9.96–$20.19

Assets

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Controls

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martinmlady / Spare Indigo Power Laces

Schematic