6.0 KiB
6.0 KiB
| title | project | date | tags | status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| HBOX Watchdog v3 PROD — Assembly BOM Split | Project Drogheda | 2026-07-05 |
|
Board routed, DRC fab-clean — assembly reference for JLCPCB PCBA order |
HBOX Watchdog v3 PROD — Assembly BOM Split
Audit of the routed board (kicad/hbox-watchdog-v3-PROD.kicad_pcb, 126 footprints)
for the JLCPCB assembly order. Three buckets: (A) what JLC solders onto the
board, (B) the plug-in modules that sit on top (you install), and (C) what
lives off-board and connects through the JST harness.
| Bucket | Count | JLC assembles? |
|---|---|---|
| A. On-board parts (SMD + THT) | 103 parts + 12 connectors + 5 sockets | Yes |
| B. Plug-in modules (on top) | 3 modules | No — you install |
| C. External via JST harness | wired to 12 connectors | No — off-board |
| Fab features (2 test points, 4 mounting holes) | 6 | n/a |
A. Assembled by JLC — on the PCB
A1 · SMD parts (standard PCBA — 98 parts)
| Qty | Value | Package | Refs |
|---|---|---|---|
| 10 | 10k | R0603 | R2, R5, R6, R7, R8, R41, Rigb, Rled, Rrp, Rtp |
| 8 | 100k | R0603 | R20, R56, R57, R58, Ren1, Rfreq, Rfreq2, Rgs |
| 7 | 100nF | C0603 | C5, C7, C9, C11, C24, Cu3, Cu4 |
| 5 | LED | LED0805 | D1, DB1, DB2, DB3, DB4 |
| 4 | 1k | R0603 | R1, R3, R40, Rts |
| 4 | 330R | R0603 | RB1, RB2, RB3, RB4 |
| 3 | SS34 | D_SMA | D2, Dbk, Dbk2 |
| 3 | 22uF | C0805 | C35, C40, C41 |
| 3 | 100k/1% | R0603 | R52, R54, R60 |
| 2 | MP1584EN | SOIC-8-EP | U2 (fan buck), U7 (modem buck) |
| 2 | 2.2nF | C0603 | Ccomp, Ccomp2 |
| 2 | 100R | R0603 | Rg, Rig |
| 2 | 10uF | C0805 | C30, C34 |
| 2 | 4.7k | R0603 | R30, R31 |
| 2 | 40.2k | R0603 | Rcomp, Rcomp2 |
| 2 | MMBT3904 | SOT-23 | Q5, Q6 |
| 2 | 10nF | C0603 | Cbst, Cbst2 |
| 2 | AO3400A | SOT-23 | Q2, Q4 |
| 2 | 10k/1% | R0603 | R42, R55 |
| 2 | 47uF | C1210 | C32, C33 |
| 1 | LTC4040EUFD | QFN-24 | U6 (backup-supply/charger) |
| 1 | AO4406A | SOIC-8 | Q7 |
| 1 | AO3401A | SOT-23 | Q1 |
| 1 | IRFR5305 | TO-252 | Q10 |
| 1 | BZX84C15 | SOT-23 | DzG |
| 1 | BAT54 | SOD-123 | D5 |
| 1 | 1N4148W | SOD-123 | D6 |
| 1 | SMBJ33A | D_SMB | D10 |
| 1 | SHT40-AD1B | DFN-4 | U3 (humidity/temp) |
| 1 | TMP102 | SOT-563 | U4 (temp) |
| 1 | 8mR/1% | R1206 | RS1 (current sense) |
| 1 | PPTC 3A | Fuse1812 | F1 |
| 3 | 2.2uH / 10uH / 10uH-2A | SRU8028 8×8 | L6, L2, L7 |
| 1 | 22uF/50V | C1210 | C22 |
| 1 | 22uF/16V | C0805 | C23 |
| 1 | 2.2uF | C0603 | C31 |
| — | (single-value R's) | R0603 | Ren2 20k, Rdfu 22k, R21 19.1k, R50 825R, R51 287k, R53 499k, R61 31.6k |
| 4 | jumpers | SolderJumper | JP1 (0R), JP2 (F2), JP3 (F1), JP4 (F0) |
A2 · Through-hole parts (THT — JLC "through-hole assembly" surcharge, or hand-solder)
| Ref | Part | Note |
|---|---|---|
| K1 | Omron G5V-1 DC5 relay | Modo-B fail-safe bypass |
| SW1 | 6 mm push (RESET) | |
| C3, C10, C43 | Radial electrolytics (47µF, 47µF/50V, 100µF) |
A3 · Connectors & module sockets (THT — soldered to board)
| Ref | Part | Purpose |
|---|---|---|
| P1 | Phoenix MKDS 1.5-5 (5-pos terminal) | GX16 machine power in |
| P2, P8, P10, P11, P12 | JST-XH 2-pin | see bucket C |
| P4, P13 | JST-XH 3-pin | |
| P3, P5, P6 | JST-XH 4-pin | |
| H3 | 1×3 pin header | USART1 reserved |
| J1, J2 | 1×20 female 2.54 | Blackpill socket |
| J7, J8 | 1×10 female 2.00 | 4G XBee socket |
| MOD1 | Arduino-UNO-form female headers | simpleRTK2B Pro socket |
⚠️ Confirm before ordering: engineering notes flag P3 / P13 / H3 as DNP (Modo-B + K1 NC bypass makes them redundant), but they are not marked DNP in the board file — so JLC would populate them. Decide per-connector.
B. Plug-in modules — mounted ON TOP (you install, NOT in the JLC order)
These are complete boards that seat into the sockets above. Do not add them to the JLC BOM — they're hand-fitted after the PCBA arrives.
| Module | Seats into | Notes |
|---|---|---|
| simpleRTK2B Pro (ZED-F9P) | MOD1 (Arduino headers) | GNSS RTK receiver |
| STM32F411 Blackpill | J1 + J2 (2×20) | watchdog MCU |
| 4G NTRIP Master (XBee LTE) | J7 + J8 (2×10, 2 mm) | modem, 3V3 socket |
C. External — connected via the JST harness (NOT on the board)
Everything that plugs into the edge connectors and lives outside the HBOX (or in the
cabinet). Wire per the harness pinout (harness-connector-pinout.md).
| Conn | Wires to (external) | Key pins |
|---|---|---|
| P1 GX16-5 | Machine power + ignition from the cabinet | 1 = 24V_IN ⚡, 3 = IGN_IN, 2 = GND |
| P2 5V-IN | Mean Well SD-15B-05 5 V supply (VEH5V rail) | 1 = VEH5V ⚡, 2 = GND |
| P3 RTK2B-UART1 | RTK2B UART1 tap (GNSS TX/RX) | 1 = SW_5V ⚡, 3 = GNSS_TX, 4 = GNSS_RX |
| P4 BATT | 1S4P 12 Ah pack + NTC | 1 = BAT_PLUS ⚡, 3 = NTC, 2 = GND |
| P5 TEMP_PROBE | External I²C temp/probe header | 1 = 3V3, 3 = SDA, 4 = SCL |
| P6 FAN | Cooling fan (5 V, tach) | 1 = 5V_FAN ⚡, 2 = FAN_RET, 4 = TACH |
| P8 PANEL_LED | Panel status LED | 1 = LED_A, 2 = LED_K |
| P10 RESET-EXT | External reset button | 1 = NRST, 2 = GND |
| P11 CUTOFF-SW | Power cutoff switch (SYS→MAIN 5 V) | 1 = MAIN5V ⚡, 2 = SYS5V ⚡ |
| P12 NTC-HOTSPOT | Cabinet hotspot NTC | 1 = NTC_TEMP, 2 = GND |
| P13 MODO-B-UPLINK | Modo-B uplink to 4G | 1 = USART1_RX, 2 = DIN_4G, 3 = GND |
Action items before the JLCPCB order
- Add LCSC part numbers to the BOM (
fab-jlcpcb/…-BOM.csv) — it exports value + footprint only; JLC PCBA matches on LCSC part #. Watch the odd ones: LTC4040EUFD, SHT40-AD1B, TMP102, MP1584EN, AO4406A, Bourns SRU8028 — verify JLC/LCSC stock. - Decide THT assembly — JLC charges extra for through-hole (K1, SW1, C3/C10/C43, all connectors/sockets). Common approach: JLC does SMD, you hand-solder the connectors + sockets (also avoids paying JLC for the big Phoenix/JST parts).
- Resolve the P3 / P13 / H3 DNP question above.
- Do not BOM the three plug-in modules (bucket B).