generated from CubeCraft-Creations/Tracehound
179 lines
8.1 KiB
Markdown
179 lines
8.1 KiB
Markdown
# RemoteRig — Camera Node Hardware Design
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> **Version:** 0.3.0 | **Status:** v4 CAD prototype ready for measurement/print validation
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> **Target:** GoPro Hero 3 Black/Silver + ESP32-C3 Super Mini + ESP-01S + USB power bank
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## Overview
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Each camera node is two ESP boards in a small stand-mounted case. The case **does not attach to the camera**; it straps to a tripod/lighting stand with reusable cloth zip ties / Velcro straps. Powered by a standard USB power bank.
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```
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┌─────────────────┐
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│ USB Power Bank │── USB ──→ GoPro (power only)
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│ (off-the-shelf)│── USB ──→ Camera Node Case
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└─────────────────┘
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│
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┌────────┴────────────────────────────┐
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│ Camera Node Case v4 │ ← Velcro/cloth straps to stand
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│ ┌──────────────────────────────┐ │
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│ │ Flush/recessed service lid │ │
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│ │ 1.3 OLED: CAM/REC/BAT/LINK │ │
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│ │ PWR LED + RGB STAT LED │ │
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│ │ Small rocker power switch │ │
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│ └──────────────────────────────┘ │
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│ ESP-01S camera bridge ↔ ESP32-C3 │
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└─────────────────────────────────────┘
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```
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## Bill of Materials
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| Item | Qty | Cost | Notes |
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|------|-----|------|-------|
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| ESP32-C3 Super Mini | 1 | ~$4–$6 | MQTT / hub-side bridge; known board envelope 22.5 × 18 mm |
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| ESP-01S / ESP8266 module | 1 | ~$2–$3 | Camera-side GoPro Wi-Fi bridge; known envelope ~24.7 × 14.3 × 12 mm |
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| 1.3-inch OLED/status screen | 1 | ~$4–$8 | Prototype CAD assumes ~31 × 16 mm visible window / ~35 × 19 mm panel clearance; confirm exact module |
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| 3 mm power LED | 1 | <$1 | Separate always-power/5V indicator |
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| 3 mm RGB status LED | 1 | <$1 | Replaces separate red/green status LEDs; firmware can map node states to color |
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| Small rocker switch | 1 | ~$1–$3 | On/off switch; prototype CAD assumes 13 × 19 mm snap-in opening |
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| USB power bank (5000 mAh+) | 1 | ~$10 | Powers camera node and GoPro |
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| Short USB cables / wiring | as needed | ~$2–$5 | Power bank → node + GoPro; internal power/signal wiring |
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| M2 or small self-tapping screws | 4 | <$1 | Front service lid screws; pilot holes are parametric |
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| PETG filament | ~35–50 g | ~$1 | 3D printed case body + lid |
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| Reusable cloth zip ties / Velcro straps | 2 | ~$1 | Primary stand mount through rear strap channels |
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**Total per node:** roughly ~$25–$35 plus GoPro and power bank, depending on display/switch choice.
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## 3D Printed Case
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**Current source:** `hardware/case/camera-node-case-v4.scad`
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**Pipeline:** `hardware/DESIGN_PIPELINE.md`
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The v4 case replaces the v3 clamp/dovetail concept with a simpler strap-mounted field enclosure:
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1. **Case body** — shell sized around ESP32-C3 Super Mini + ESP-01S with service/wiring clearance.
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2. **Flush/recessed front service lid** — screw-on front status panel with locating lip.
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3. **Front panel controls/indicators**:
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- 1.3-inch OLED/status screen window.
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- 3 mm **PWR** LED.
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- single 3 mm **RGB STAT** LED for state-dependent colors.
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- small rectangular rocker switch cutout.
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- lower vent/style slots.
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4. **Rear strap channels** — two raised horizontal cloth zip-tie / Velcro strap paths to reduce rotation on a tripod/stand.
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5. **Bottom cable exit** — cable/strain-relief notch for USB/power wiring.
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### Export wrappers
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Simple per-part OpenSCAD wrappers are included:
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- `hardware/case/camera-node-case-v4-body.scad`
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- `hardware/case/camera-node-case-v4-lid.scad`
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- `hardware/case/camera-node-case-v4-preview.scad`
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Example CLI exports, if OpenSCAD is installed:
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```bash
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openscad -o hardware/case/camera-node-case-v4-body.stl hardware/case/camera-node-case-v4-body.scad
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openscad -o hardware/case/camera-node-case-v4-lid.stl hardware/case/camera-node-case-v4-lid.scad
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openscad -o hardware/case/camera-node-case-v4-preview.stl hardware/case/camera-node-case-v4-preview.scad
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```
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Or render the main file directly:
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```bash
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openscad -D 'part="body"' -o hardware/case/camera-node-case-v4-body.stl hardware/case/camera-node-case-v4.scad
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openscad -D 'part="lid"' -o hardware/case/camera-node-case-v4-lid.stl hardware/case/camera-node-case-v4.scad
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openscad -D 'part="preview"' -o hardware/case/camera-node-case-v4-preview.stl hardware/case/camera-node-case-v4.scad
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```
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### Print Settings
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- **Material:** PETG preferred for heat/outdoor use and strap-tab durability.
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- **Layer:** 0.2 mm typical.
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- **Infill:** 20% gyroid minimum; 30%+ recommended around rear strap bridges.
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- **Supports:** likely minimal/none depending on orientation; verify rear strap bridge spans and cable notch in slicer.
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- **Post-processing:** fit 4 lid screws; deburr OLED/LED/switch cutouts; soften strap-channel edges if the printed radius is too sharp for cloth ties.
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## Expected Status Screen Content
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Preferred 1.3-inch OLED layout/content style:
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```text
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CAM 03 REC ●
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BAT 87% LINK OK
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00:12:34
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```
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Suggested fields:
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- `CAM` / node ID.
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- `REC` state with a clear recording indicator.
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- Battery percentage or supply estimate.
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- `LINK OK` / degraded / disconnected state.
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- Recording/session timer.
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## Wiring
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```text
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USB Power Bank
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├── USB-A → Camera Node Case
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│ ├── rocker switch → node power rail
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│ ├── PWR LED indicator
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│ ├── ESP32-C3 Super Mini
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│ ├── ESP-01S / ESP8266
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│ ├── 1.3-inch OLED display
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│ └── RGB status LED
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│
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└── USB-A → GoPro USB port
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(power only — no data)
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UART / control inside case:
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ESP-01S TX ──→ ESP32-C3 RX
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ESP-01S RX ←── ESP32-C3 TX
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ESP-01S GND ─── ESP32-C3 GND
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```
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**Power note:** exact wiring depends on the regulator/power board used. Confirm OLED voltage, LED current limiting, and whether the rocker switches USB 5 V input or a regulated node rail.
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## Wi-Fi Topology
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```text
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GoPro Hero 3 ──(AP @ 10.5.5.1)──→ ESP-01S / ESP8266 camera bridge
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│
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UART │ (inside case)
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│
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Travel Router ──(AP)────────────────────→ ESP32-C3 MQTT bridge
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(10.60.1.1) │
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│
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MQTT │
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▼
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Pi Hub (10.60.1.56)
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```
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The ESP8266/ESP-01S and GoPro talk over Wi-Fi. The only cable to the GoPro is USB power from the battery pack.
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## Field Setup
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1. Mount GoPro on tripod/stand.
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2. Route two reusable cloth zip ties / Velcro straps through the rear v4 case channels.
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3. Strap the case to a tripod/stand leg; use both strap paths to resist rotation.
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4. Connect power bank to case and GoPro.
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5. Toggle rocker switch on.
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6. Verify PWR LED, RGB status LED, and OLED status: camera ID, REC state, battery, link, timer.
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7. Monitor from `http://10.60.1.56:8080`.
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## Case Dimensions
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Prototype v4 nominal CAD dimensions:
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| Part / feature | W × D × H (mm) |
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| Case shell external | ~68 × 42 × 32 |
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| Case with rear strap bridges | ~68 × 45.2 × 32 |
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| Front recessed lid | visible panel ~60 × 2 × 26; total with locating lip ~60 × 3 × 26 |
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| OLED visible window assumption | ~31 × 16 |
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| Rocker cutout assumption | ~13 × 19 |
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| Rear strap channels | two horizontal pass-through paths, ~48 mm usable slot width, ~4.2 mm strap-thickness clearance |
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| Board clearance targets | ESP32-C3 22.5 × 18 mm + ESP-01S 24.7 × 14.3 × 12 mm plus wiring/service clearance |
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These dimensions are placeholders for the first CAD prototype. Measure the actual OLED module, rocker switch, LEDs, screws, USB cable bend radius, and strap width/thickness before committing to production prints.
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