5.6 KiB
5.6 KiB
| tags | project | author | date | status | ||||
|---|---|---|---|---|---|---|---|---|
|
Project Drogheda | Helgen CTO | 2026-06-20 | Active |
BOM Maestro — HBOX + Gabinete (24 V)
Updated master BOM for the 24 V Drogheda unit (the dominant ICAVE variant). Costs in MXN, from
Selección de componentes para gabinete2.xlsxand the H-BOX BOM sheet. This supersedes the older loose BOM. For 12/48/110/230 V variants only the cabinet power/protection parts change (see source sheet).
Why this exists: the earlier BOM drifted from reality. This pins the as-built parts (so diagnosis/PCB work targets the right hardware) and flags the change-list for the production fix.
1. HBOX — internal unit (per unit, 24 V)
| # | Item | Marca / Modelo | Qty | MXN | Notes |
|---|---|---|---|---|---|
| 1 | H-BOX Case | Helgen Series1 (ASA print) | 1 | 100 | UV-stable, ~95–100 °C — adequate |
| 2 | H-BOX Top | Helgen Series1 (ASA) | 1 | 50 | |
| 3 | DC PSU bracket | Helgen Series1 (ASA) | 1 | 20 | |
| 4 | Battery Case | Helgen Series1 (ASA) | 1 | 30 | houses 18650 |
| 5 | SIM | Telcel micro | 1 | 100 | per-unit data plan |
| 6 | GNSS RTK | Ardusimple simpleRTK2B Pro (AS-RTK2B-PROF9P-L1L2-NH-00) | 1 | 3,340 | ZED-F9P |
| 7 | 4G/NTRIP | Ardusimple 4G NTRIP Master (AS-XBEE-4G-NA-UFL-00) | 1 | 2,440 | XBee LTE |
| 8 | MCU watchdog | DFRobot STM32F411 Blackpill | 1 | 104 | runs blackpillrtkcode_v2 |
| 9 | GNSS antenna | Ardusimple AS-ANT2B-ANN-L1L2-50SMA | 1 | 700 | multiband |
| 10 | LTE antenna | Unit Electronics AR1582 (SMA→IPEX) | 2 | 42 | 4G diversity |
| 11 | Headers F 6/8/10-pin | 2.54 mm | 1ea | 10 | board interconnect |
| 12 | 5 V supply | Mean Well SD-15B-05 (18–36 V→5 V, 3 A) | 1 | 300 | ✅ industrial — keep |
| 13 | Boost / charger | Adafruit PowerBoost 1000C (2465) | 1 | 400 | battery path — review |
| 14 | Ignition cond. | DFRobot DFR1015 buck | 1 | 106 | 24 V ign → Blackpill PA5 |
| 15 | Battery | Hyvel 18650 1S4P (FG-0889, 3.6 V) | 1 | 204 | ⚠ charge ≤45 °C — decide |
| 16 | Status LED + holder | Steren 5 mm + bezel | 1 | 3 | PB0 path |
| 17 | Resistor | 1.5 kΩ (use TBC — see watchdog-schematic) | 1 | 1 | verify value |
| 18 | HBOX↔cabinet | GX16-5 macho/hembra | 1 | 22 | ✅ locking — keep |
| 19 | Watchdog discretes | 2N3904, IRF9540N, 2N7000, R (1k/10k/220Ω) | — | — | → consolidate on PCB |
| 20 | Dupont terminals | red + black | 2 | 4 | ⚠ vibration — eliminate |
| 21 | Wire, glands, screws, label, switch | genérico / Steren | — | ~110 | NPT 3/8 gland |
| HBOX subtotal | ≈ 8,041 |
2. Gabinete — cabinet (per unit, 24 V)
| Item | Marca / Modelo | Qty | MXN |
|---|---|---|---|
| Enclosure IP67 (ABS) | Yetlebox P3901 (39×29×16) | 1 | 1,435 |
| DIN rail | Weidmüller TS 35×7.5 | 1 | 50 |
| Neutral terminals | Weidmüller WDU 2.5 | 5 | 58 |
| Ground terminals | Weidmüller WPE4 | 4 | 154 |
| Fuse-holder terminal | Phoenix PT 6-FSI/C (3212166) | 3 | 900 |
| End stops | Wago 249-116 | 4 | 56 |
| Ignition SSR | Weidmüller TOS 24VDC 2A | 1 | 684 |
| Surge (SPD) | Phoenix TTC-6-TVSD-C-24DC-PT-I | 2 | 1,076 |
| Breaker | Phoenix TMC 81C 05A | 1 | 484 |
| Supply → 24 V | Mean Well DDR-60G-24 | 1 | 748 |
| Fuse (blade) | automotriz 2 A | 3 | 6 |
| Cable / ferrules / glands / labels | Indiana / Weidmüller / Helgen | — | ~110 |
| Shipping to port | — | 1 | 600 |
| Cabinet subtotal | ≈ 6,365 |
≈ Total per 24 V unit: ~14,400 MXN (HBOX ~8,041 + cabinet ~6,365). An
alternate supplier ("Israel" column in the sheet) shows ~1,284 MXN/cabinet
savings at 24 V — sourcing decision lives here in 09_.
3. ✅ What's already good (don't re-buy / don't duplicate)
- Cabinet is industrial-grade: SPD + breaker + isolated SSR ignition + Mean Well 24 V. The HBOX needn't re-implement input surge/protection.
- SD-15B-05 (24→5 V, 3 A) is a real industrial supply — keep.
- GX16-5 locking HBOX↔cabinet connector — keep (good vibration practice).
4. ⚠ Change-list for the production fix (feeds the PCB + hackathon)
| Change | From → To | Why | Ref |
|---|---|---|---|
| Inner case | ASA — keep (adequate); optional metal / plate-mount | conduction, not material, is the lever | RCA, hardware-brief §2b |
| Internal wiring | Dupont/hand-wire → PCB + locking connectors | vibration intermittents | hardware-brief §4 |
| Battery path | PowerBoost 1000C + 18650 → decide: drop / LiFePO4 / supercap | heat + safety; do we need parked tracking? | hardware-brief §6.1 |
| Fuse | verify the 2 A blade vs measured worst-case + inrush | client's "under-rated fuse" | RCA H5 |
| Watchdog discretes | 2N3904/IRF9540N/pull-ups → integrated load switch on PCB | fewer parts, defined turn-on | hardware-brief §4 |
| SIM | micro-SIM buried → front-panel SIM or MFF2 eSIM | maintainability | hardware-brief §6.2 |
| Thermal | conduct heat to metal plate / sunshade; NO internal fan | sealed-box physics | hardware-brief §2b |
Open Questions
- Confirm the installed blade-fuse value (2 A may be under-rated for LTE inrush).
- Battery decision (drop vs LiFePO4 vs supercap) — blocks the PCB power section.
- Lock supplier per line (Helgen vs alternate quote) for the August batch.