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Context: the project archive (KXKM_Batterie_Parallelator-main) had no git history locally; a fresh repository is needed to host it on git.saillant.cc (electron/KXKM_Batterie_Parallelator). Approach: initialize a new repo on branch main, stage the archive content, and harden .gitignore before the first commit. Changes: - Import the full project tree: firmware/, firmware-idf/, firmware-rs/, iosApp/, kxkm-bmu-app/, kxkm-api/, hardware/, docs/, specs/, scripts/, models/, tests/ - Keep project dotfiles tracked despite the trailing '.*' ignore rule: .github/, .claude/, .superpowers/, .gitattributes, .markdownlint.json - Extend .gitignore: firmware/src/credentials.h (local secrets, template kept), kxkm-bmu-app/**/build/ (66 MB compiled iOS framework), .remember/ (session data) Impact: the project can now be maintained on the self-hosted Gitea forge with a clean, secret-free initial history.
51 lines
1.5 KiB
Markdown
51 lines
1.5 KiB
Markdown
# Hardware (KiCad)
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Schémas et PCB du BMU. **2 révisions** :
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| Version | Status | Path |
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|---------|--------|------|
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| BMU v1 | Manufactured | `PCB/` |
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| BMU v2 | Production-ready (ERC 0, BOM 107 composants, Gerbers JLCPCB) | `pcb-bmu-v2/` |
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## KiCad CLI via Docker
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Le repo est en dehors de Kill_LIFE root, donc Docker direct :
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```bash
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docker run --rm --user $(id -u):$(id -g) -e HOME=/tmp \
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-v "$(pwd):/project" \
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-w /project kicad/kicad:10.0 kicad-cli sch erc \
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--format json --output "/project/hardware/pcb-bmu-v2/erc_report.json" \
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"/project/hardware/pcb-bmu-v2/BMU v2.kicad_sch"
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```
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## ICs clés
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| IC | Package | Rôle | I2C |
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|----|---------|------|-----|
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| INA237 | VSSOP-10 | Power monitor (V/I/P) | 0x40-0x4F (16 max) |
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| TCA9535PWR | TSSOP-24 | GPIO expander (MOSFETs + LEDs) | 0x20-0x27 (8 max) |
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| ISO1540 | SOIC-8 | Isolateur I²C galvanique | - |
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| IRF4905 | D2PAK | P-channel MOSFET (55V, 74A) | - |
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## I2C Mapping (typique)
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```
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TCA_0 (0x20) → INA 0x40-0x43 → Batteries 1-4
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TCA_1 (0x21) → INA 0x44-0x47 → Batteries 5-8
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TCA_2 (0x22) → INA 0x48-0x4B → Batteries 9-12
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TCA_3 (0x23) → INA 0x4C-0x4F → Batteries 13-16
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```
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Adressage via solder jumpers JP2-JP20.
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## TCA9535 Pinout
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Pins 0-3 = MOSFET switches (1 par batterie), pins 8-15 = LEDs paires rouge/verte (1 par batterie).
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## Anti-Patterns
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- Ne jamais modifier les fichiers KiCad sans le checker ERC après
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- Ne pas changer les jumpers d'adressage sans documenter dans `adresse_TCA_INA.xlsx`
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- BOM v2 : 107 composants, ne pas ajouter sans vérifier les substituts JLCPCB
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