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U2
74hc595 7 segment display

@copilot 74hc595 7 segment display
2y
Your project is using an SN74HC595N (designator U1) which is an 8-bit shift register, and a HDSP-5503 (designator U2), a 7-segment LED display, in your Flux project. It seems you want to connect the 74HC595 to the display and use it to control the display.
The SN74HC595N has 8 output pins (Q0 to Q7) and these can be used to drive the segments of your display. From your project, it seems you have already connected the 74HC595 outputs to the HDSP-5503 as follows:
  • Q0 to ANODE_A (Segment A)
  • Q1 to ANODE_B (Segment B)
  • Q2 to ANODE_C (Segment C)
  • Q3 to ANODE_D (Segment D)
  • Q4 to ANODE_E (Segment E)
  • Q5 to ANODE_F (Segment F)
  • Q6 to ANODE_G (Segment G)
This connection allows you to control each individual segment of the display directly from the shift register.
It's important to ensure proper current limiting to each segment to prevent damaging the device. This could be done at the output of each pin of the 74HC595 using a current limiting resistor. However, I see no resistors mentioned in your current schematic- you may need to add them.
One thing to note: your schematic doesn't seem to control the decimal point as one of the output (Q7) from the 74HC595 seems to be unconnected. If you want to have control over the decimal point (ANODE_DP) of your display, you should connect it to the remaining output pin of the shift register.
Make sure to connect VCC and GND of both U1 and U2 to respective power and ground rails.
Also, ensure the other pins on the SN74HC595N are appropriately configured:
  • The shift register clock pin (SH_CP) and the storage register clock pin (ST_CP) require a clock signal to shift and latch data.
  • The data pin (DS) is the data input for your register.
  • The master reset pin (~MR) should be held high (connected to VCC) during normal operation. If you momentarily pull it low, it clears all the outputs to low.
  • The output enable pin (~OE) if your 74HC595 has one, is active low - meaning when it's low, the outputs are enabled. To ensure the outputs are always enabled, you can connect ~OE directly to GND.
These considerations should assist you in connecting a 74HC595 to a 7-segment display in a Flux project.
Please remember to confirm the correctness of my assumptions about your control and connectivities before proceeding. I am basing my advice on your provided project information.
2y
3
make a pcb for 7 segment display connected to 74hc595

@copilot make a pcb for 7 segment display connected to 74hc595
2y
Given the text description of your project, it appears that you already have the necessary schematic in place for a 7-segment display (HDSP-5503) connected to a 74HC595 shift register (SN74HC595N). The next step will be to arrange and connect these components in a suitable PCB layout.
Follow these broad steps in the Flux PCB layout editor:
Step 1: Placement Place your components on the board in an appropriate and compact configuration. You'll want to place the 7-segment display (U2) in a location where it can be easily seen, and other components like the SN74HC595N shift register (U1) and the capacitor (C2) nearby.
Step 2: Ground Plane Establish a ground plane on both the top and bottom layers of the board, connecting it to all GND pins.
Step 3: Connections Start creating traces between your components according to your schematic:
  • Connect all eight output pins Q0–Q7 from the shift register (U1) to the corresponding anodes A-G and DP of the 7-segment display.
  • Connect the voltage output pin (VO) of the voltage regulator (U3) to the power pin (VCC) of your shift register (U1) and also to one terminal (P1) of the capacitor (C2).
  • The other terminal (P2) of the capacitor (C2) should be connected to ground.
  • The common cathode pins (COMMON_CATHODE_1 and COMMON_CATHODE_2) of the 7-segment display (U2) should connect to ground.
Step 4: Clearance & Checks Ensure that there's sufficient clearance between all components to abide by DRC rules.
Also, do a connectivity check to verify that all connections have been made as per the schematic and there are no unconnected pins left.
Remember these are high-level guidelines. The actual positioning and routing could vary based on the size and shape of the PCB you are designing.
Please note that all designators are derived from the provided project description. They might vary if the actual schematic designators have been modified.
If you're unclear about any part of this process or need further assistance on a specific step, don't hesitate to ask!
2y
1
C2
Capacitance
Capacitance
C1
Capacitance
Capacitance
U1
U3


  • Ground
    A common return path for electric current. Commonly known as ground.
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    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
  • 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
  • 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
  • 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
  • Generic Inductor
    A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
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    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
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    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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