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amyleesterling
detailed specs to build a humanoid robot (with kids)
| Reference | Value | Description |
|---|---|---|
| UOBS1,UOBS2 | Texas Instruments ISO1212DBQ dual isolated digital-input receiver | Logic GND1 is COMPUTE_0V; field FGND is SAFETY_0V. SUB pins require separate floating copper and no connection. Device isolation is not system safety approval. |
| BOUNDARY1 | GALVANIC DOMAIN BOUNDARY - ZERO SAFETY CREDIT | The ISO1212 barriers separate these schematic domains. Cable, PCB, enclosure, PE, parasitic capacitance and fault paths determine the real system boundary. |
| CDEC1,CDEC2 | 100 nF 50 V X7R; Murata GRM21BR71H104KA01L | Place at UOBS1 within TI guidance; received capacitance and layout remain open.,Place at UOBS2 within TI guidance; received capacitance and layout remain open. |
| CFI1-CFI4 | 10 nF 50 V X7R; TDK CGA3E2X7R1H103K080AA | TYPE-3 INPUT FILTER; 10 nF nominal is not credited until bias/tolerance/temperature and installed EMC evidence exist. |
| H1EXT? | Existing IDEC HW1P-1FQD-A-24V load outside this board | Catalog screen is 7 mA DC, but exact received current and Y32 low-voltage brightness are not accepted. |
| JFIELD1,JLOGIC1 | Phoenix Contact MKDS 1/6-3,5 item 1751280 | Four positive status nets plus one field return and one deliberate no-connect. Position numbering is project-defined and not a harness release.,No Raspberry Pi GPIO or header pin is selected. Exact mating cable/contact system and external 3V3-load acceptance remain open. |
| K1AUX?,K2AUX? | Existing Schneider LC1D25BD NO auxiliary 13-14 | Minimum signalling application: 5 mA and 17 V. This NO contact is diagnostic only.,Same application boundary as K1AUX. |
| RPD1-RPD4 | 10.0 kohm 1% 0.125 W 0805; Panasonic ERJ6ENF1002V | FAIL-LOW PULLDOWN; exact component identity inherited from the controlled watchdog receiver network. No fabrication or connection release. |
| RSN1-RSN4 | 562 ohm 1% 0.125 W 0805; Panasonic ERJ6ENF5620V | CURRENT LIMIT; exact component identity inherited from the controlled watchdog receiver network. No fabrication or connection release. |
| RSO1-RSO4 | 1.00 kohm 1% 0.125 W 0805; Panasonic ERJ6ENF1001V | OUTPUT SERIES; exact component identity inherited from the controlled watchdog receiver network. No fabrication or connection release. |
| RTH1-RTH4 | 1.00 kohm 1% 0.4 W MELF; Vishay MMA02040C1001FB300 | TYPE-3 THRESHOLD/SURGE; exact component identity inherited from the controlled watchdog receiver network. No fabrication or connection release. |
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| RW2-RW4 | 2.70 kohm 1% 0.5 W 1210; Vishay CRCW12102K70FKEA | WETTING/BLEED SHUNT; exact component identity inherited from the controlled watchdog receiver network. No fabrication or connection release. |
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