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ArmSoM CM1 (RK3506J) system-on-module and CM1-IO carrier hardware reference. Pre-extracted schematic data so you never have to re-parse the ArmSoM PDFs: the J8001/J8002 board-to-board connector pinouts, power tree and rails, SoC voltage domains, boot-strap (SARADC_IN0) options, and per-peripheral net maps (FSPI flash, SDMMC/TF, MIPI-DSI panel, USB OTG0/1, RMII0/1, audio/SAI, FlexBUS). Use this whenever a task touches the ArmSoM CM1 module or CM1-IO board: pin assignment, "which connector pin is net X", device-tree pinmux, FlexBUS/QSPI external-bus wiring, display/backlight, power sequencing, GPIO offsets, or "what's on J8001/J8002". Trigger on "CM1", "CM1-IO", "ArmSoM", "RK3506", "J8001", "J8002", "FLEXBUS1", "core connector", or any question answerable from the CM1 schematic. Prefer this skill over opening the PDF.
How this skill is triggered — by the user, by Claude, or both
Slash command
/armsom:cm1The summary Claude sees in its skill listing — used to decide when to auto-load this skill
The ArmSoM **CM1** is an RK3506J (triple Cortex-A7 + Cortex-M0) system-on-module.
The ArmSoM CM1 is an RK3506J (triple Cortex-A7 + Cortex-M0) system-on-module.
It mates to a carrier (the CM1-IO board, or a custom carrier) through two
board-to-board connectors, J8001 (40-pin) and J8002 (44-pin). This skill
holds the schematic data extracted from ArmSoM-CM1-1V1_Sch.pdf (rev V1.1,
2025-06-10) so design questions can be answered without re-rendering the PDF.
When you cite a fact, name the source sheet (e.g. "CM1 sch sheet 16,
CORE-CONN-LED"). If the answer is not in these files, say so and only then
fall back to rendering the PDF with scripts/extract_schematic.py.
/-mux
label (e.g. DSMC_D5/FLEXBUS1_D8, UART2_RX/PWM0_CH3_IR_RX). The actual
function depends on the RK3506 pinmux in the device tree — the silk/net name
is not proof of how the pin is currently driven.[n] tag after a net is the schematic sheet cross-reference (the other
sheet the net appears on), not a pin number.The extractor that built these tables is reusable:
python3 scripts/extract_schematic.py <pdf> --text # dump per-page text
python3 scripts/extract_schematic.py <pdf> --render <page> out.png # render a page
python3 scripts/extract_schematic.py <pdf> --connectors <page> # reconstruct a 2-col connector
It needs only PyMuPDF (pip install pymupdf) — no poppler. The CM1-IO
carrier is covered by the sibling armsom:cm1-io skill.
| File | What it is | Rev |
|---|---|---|
ArmSoM-CM1-1V1_Sch.pdf | CM1 module schematic, 17 sheets | V1.1 (2025-06-10) |
ArmSoM-CM1-IO-1V1_Sch.pdf | CM1-IO carrier schematic (see armsom:cm1-io) | V1.1 (2025-06-10) |
CM1 sheet index: 1 Block Diagram · 2 Power Diagram · 3 SOC POWER/GND · 4 SOC OSC/PLL/PMUIO · 5 SOC DRAM Controller · 6 SOC Flash Controller · 7 SOC USB/ACODEC/SARADC · 8 SOC VOP/LCDC mux · 9 SOC RMII/SDMMC/GPIO · 10 DRAM DDR3/DDR3L · 11 SPI Flash · 12 TF Card · 13 VO MIPI-DSI · 14 USB OTG / RTC · 15 Power-Discrete · 16 CORE-CONN-LED (J8001/J8002) · 17 Revision History.
Searches MemPalace before answering questions about past work, people, projects, or prior decisions. Returns verbatim stored content instead of guessing from model memory.
Guides Payload CMS config (payload.config.ts), collections, fields, hooks, access control, APIs. Debugs validation errors, security, relationships, queries, transactions, hook behavior.
Implements vector databases with Pinecone, Weaviate, Qdrant, Milvus, pgvector for semantic search, RAG, recommendations, and similarity systems. Optimizes embeddings, indexing, and hybrid search.
npx claudepluginhub savaughn/armsom --plugin armsom