ee:schematic
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ee:schematic [2025/10/09 12:12] FKR@staff.hsrw |
ee:schematic [2025/10/09 12:21] (current) FKR@staff.hsrw |
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| * Minimize net names — connect with lines where possible. | * Minimize net names — connect with lines where possible. | ||
| * Group and organize components where they belong: | * Group and organize components where they belong: | ||
| - | * power,processing,analog,digital,outputs,inputs,electromechanical, and so on. | + | * power,processing,analog,digital,outputs,inputs,electromechanical, and so on. |
| + | * Decoupling capacitors should be next to and connected to the component they are decoupling. | ||
| + | * Do **NOT** overlap symbols, lines, reference designators, values, notes or any other text. | ||
| + | * Keep part symbols and lines spaced clearly. | ||
| + | * Keep the text horizontal so whoever is reading the schematic doesn't have to hurt their neck. | ||
| + | * Follow conventions for power rails (positive up, ground down). | ||
| + | * Include **board/project name, author, date, revision** in the **Title Block** | ||
| + | * Leave any critical notes and design choices that others reviewing the schematic or your future self should know about without having to dive deep into the topic again and invest significant time. | ||
| - | Appearance | ||
| - | Part Symbols & Part Values Formats | ||
| + | ===== Part Symbols & Part Values Formats ===== | ||
| - | Minimize net names — connect with lines where possible. | + | * Use **standardized symbols** (consistent IEC/IEEE style). Resistor example: IEC elongated rectangle, IEEE zig-zag |
| - | Group and organize components where they belong: | + | * Label components with correct reference prefixes (R, C, L, D, Q, U, S, etc.). |
| - | power,processing,analog,digital,outputs,inputs,electromechanical, and so on. | + | * Use logical numbering schemes (by page or by block). |
| - | Decoupling capacitors should be next to and connected to the component they are | + | * Use **standard, orderable values** (E-series). |
| - | decoupling. | + | * Stick to one consistent naming format (e.g., 4.7k or 4K7, not both). 4K7 is preferred because its possible to not see the little dot and place a wrong value during assembly. |
| - | Do NOT overlap symbols, lines, reference designators, values, notes or any other text. | + | * Stick to one consistent value format (e.g., 100n or 0.1u, not both). |
| - | Keep part symbols and lines spaced clearly. | + | |
| - | Keep the text horizontal so whoever is reading the schematic doesn't have to hurt their | + | |
| - | neck. | + | |
| - | Follow conventions for power rails (positive up, ground down). | + | |
| - | Include board/project name, author, date, revision in the Title Block | + | |
| - | Leave any critical notes and design choices that others reviewing the schematic or your | + | |
| - | future self should know about without having to dive deep into the topic again and invest | + | |
| - | significant time. | + | |
| - | Use standardized symbols (consistent IEC/IEEE style). Resistor example: IEC elongated | + | |
| - | rectangle , IEEE zig-zag | + | |
| - | Label components with correct reference prefixes (R, C, L, D, Q, U, S, etc.). | + | |
| - | Use logical numbering schemes (by page or by block). | + | |
| - | Use standard, orderable values (E-series). | + | |
| - | Stick to one consistent naming format (e.g., 4.7k or 4K7, not both). 4K7 is preferred | + | |
| - | because its possible to not see the little dot and place a wrong value during assembly. | + | |
| - | Unused Pins | + | ===== Unused Pins ===== |
| - | Other Checks | + | * **Terminate unused inputs** properly to avoid oscillation/power issues. (see course Low power design) |
| + | * Provide access pads/connectors if you may repurpose unused I/O later. | ||
| + | * Check datasheets for special handling of unused pins/outputs. | ||
| + | ===== Other checks ===== | ||
| + | * Verify symbol-to-footprint pin mapping. | ||
| + | * Add debouncing circuits for buttons/switches where needed. | ||
| + | |||
| + | ===== Additional tips ===== | ||
| + | |||
| + | * Rectangles and titles can be added in the schematic around different functional parts i.e. Power, MCU, Outputs, Electromechanical and so on. | ||
| + | * **Do Not Place** components can be added, ex. after the board is manufactured and assembled maybe voltage divider output need to be tuned. | ||
| - | Additional Tips | ||
| - | Stick to one consistent value format (e.g., 100n or 0.1u, not both). | ||
| - | Terminate unused inputs properly to avoid oscillation/power issues.(Low power design) | ||
| - | Provide access pads/connectors if you may repurpose unused I/O later. | ||
| - | Check datasheets for special handling of unused pins/outputs. | ||
| - | Verify symbol-to-footprint pin mapping. | ||
| - | Add debouncing circuits for buttons/switches where needed. | ||
| - | Rectangles and titles can be added in the schematic around different functional parts i.e. | ||
| - | Power, MCU, Outputs, Electromechanical and so on. | ||
| - | Do Not Place components can be added, ex. after the board is manufactured and | ||
| - | assembled maybe voltage divider output need to be tuned. | ||
ee/schematic.txt · Last modified: 2025/10/09 12:21 by FKR@staff.hsrw
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