3.5 KiB
3.5 KiB
[DIY Kit Name] — Build Guide
Version: [v1.0]
Date: [YYYY-MM-DD]
Author: [Name / Contact]
1. Introduction
- What this kit does (short description).
- Skill level required (Beginner / Intermediate / Advanced).
- Estimated build time: [X hours].
- Tools required: [Soldering iron, multimeter, etc.].
2. Circuit Description
2.1 General Idea
- Short explanation of the concept.
- Example: The kit demonstrates low-power control using an ATtiny85 microcontroller. It blinks an LED in Morse code and sleeps when ambient light is detected.
2.2 Annotated Schematic
(Insert schematic image exported from KiCad, e.g., as PNG or PDF)
Use numbered blocks for explanation. Example:
Figure 1: Schematic with annotation numbers
| Block | Circuit Section | Description |
|---|---|---|
| 1 | Power Supply | 2×AA batteries → DC/DC regulator (U1) → 5 V rail. Decoupling capacitors (C1, C2) smooth the voltage. |
| 2 | Controller | ATtiny85 (U2) running firmware. Pull-up resistors (R1, R2) ensure stable inputs. |
| 3 | LED Output | LED D1 driven by PB0. Current limited by R3 (330 Ω). |
| 4 | Light Sensor | LED D2 reverse biased → generates photocurrent. Read on PB2. |
| 5 | Programming Header | ISP 6-pin header for flashing firmware. |
| 6 | Test Points | Labeled pads J1–J3 for debugging with a multimeter. |
(Link to the KiCad schematic file in Git repo, e.g.: [GitHub/Gitea link])
2.3 Functional Flow
- Add a block diagram showing logic signal flow (KiCad → export block diagram or draw in Mermaid).
- Example: Battery → DC/DC → ATtiny85 → LED driver → LED.
3. Mechanical Parts
3.1 2D CAD Files
- Mechanical drawings in DXF for front panel / housing.
- Dimensions, hole positions, and cut-outs for connectors.
3.2 3D Models
- STL/STEP files for 3D printing, if available.
- Assembly orientation, support recommendations.
(Link to repo with mechanical CAD files.)
4. Kit Contents
(BOM table)
5. Safety Notes
⚠️ Soldering involves heat. Work on a non-flammable surface.
⚠️ Observe polarity on diodes, electrolytic capacitors, and ICs.
6. Assembly Instructions
(step-by-step with images/photos)
7. First Power-Up
(preconditions + test steps)
8. Adjustments / Calibration
(potentiometer trim, jumper setting, firmware config)
9. Troubleshooting
(table with symptoms and remedies)
10. Next Steps / Modifications
(extensions, software mods, hardware mods)
11. Resources
- Git Repository: [link]
- KiCad Project Files: [link]
- DXF Mechanical Files: [link]
- STL/3D Models: [link]
- Firmware Source Code: [link]
- Datasheets: [links]
12. Document Control
| Version | Date | Author | Changes |
|---|---|---|---|
| 1.0 | YYYY-MM-DD | [Name] | Initial release |