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amyleesterling
detailed specs to build a humanoid robot (with kids)
| Reference | Value | Description |
|---|---|---|
| U1-U3 | TI TPS259461LRPWR latch-off bidirectional-on-state eFuse | Exact active TI orderable candidate. Forward overcurrent limiting only; no OUT-to-IN overcurrent protection while enabled. RPW land pattern, assembly process, thermal design and received validation remain open. |
| U1G? | U1 pin 8 GND cross-reference | Pin 8 belongs to the same TPS259461LRPWR represented by U1; do not count as another BOM device. |
| U2G? | U2 pin 8 GND cross-reference | Pin 8 belongs to the same TPS259461LRPWR represented by U2; do not count as another BOM device. |
| U3G? | U3 pin 8 GND cross-reference | Pin 8 belongs to the same TPS259461LRPWR represented by U3; do not count as another BOM device. |
| CDV1-CDV3 | 2.2 nF dVdt candidate | Slew-rate candidate; received actuator startup and thermal behavior remain open. |
| CIN1-CIN3 | 0.1 uF minimum 25 V X7R input bypass candidate | Locate at IN/GND; capacitance under bias, ripple and layout remain open. |
| COUT1-COUT3 | 1.0 uF minimum 25 V X7R output bypass candidate | Locate at OUT/GND; actuator input capacitance and transient loop remain open. |
| JIN1 | JST B2P-VH J1 SHOULDER fused input boundary | Input from the separately fused branch. Exact mating housing, contact, conductor, crimp, retention and thermal evidence remain open. |
| JIN2 | JST B2P-VH J2 ELBOW fused input boundary | Input from the separately fused branch. Exact mating housing, contact, conductor, crimp, retention and thermal evidence remain open. |
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| JIN3 | JST B2P-VH G1 GRIPPER fused input boundary | Input from the separately fused branch. Exact mating housing, contact, conductor, crimp, retention and thermal evidence remain open. |
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| JOUT1 | JST B2P-VH J1 SHOULDER limited output boundary | Output to the existing DXL-STAR protected-power input. Exact harness and physical integration remain open. |
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| JOUT2 | JST B2P-VH J2 ELBOW limited output boundary | Output to the existing DXL-STAR protected-power input. Exact harness and physical integration remain open. |
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| JOUT3 | JST B2P-VH G1 GRIPPER limited output boundary | Output to the existing DXL-STAR protected-power input. Exact harness and physical integration remain open. |
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| KCHAIN1 | K1/K2 redundant interruption output boundary | Represents the existing two-contactor series path only; no added safety credit. |
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| RILM1,RILM2 | 1.65 kOhm 1% | TI catalog basis: 1.8-2.2 A catalog threshold before resistor tolerance. The physical resistor order code and tolerance/temperature proof remain open. |
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| RILM3 | 3.32 kOhm 1% | TI catalog basis: 0.85-1.15 A catalog threshold before resistor tolerance. The physical resistor order code and tolerance/temperature proof remain open. |
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| ROVB1-ROVB3 | 44.2 kOhm 1% OVLO lower | TI 14 V application-divider example; project tolerance and transient validation remain open. |
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| ROVT1-ROVT3 | 470 kOhm 1% OVLO upper | TI 14 V application-divider example; project tolerance and transient validation remain open. |
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| RUVB1-RUVB3 | 49.9 kOhm 1% UVLO lower | Nominal 10 V turn-on divider lower resistor; tolerance screen only. |
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| RUVT1-RUVT3 | 365 kOhm 1% UVLO upper | Nominal 10 V turn-on divider upper resistor; tolerance screen only. |
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| SH1 | Pololu item 3771 13.2 V 1.50 Ohm 15 W shunt regulator | Install across the post-contactor bus for evaluation. Manufacturer warns continuous above-setpoint voltage can destroy the board in under one second. |
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| SRC1 | Mean Well GST280A12-C6P source boundary | 12 V ±5% catalog source; reverse-current sinking is not documented. |
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| TPBUS1 | Bus-voltage measurement point - SELECTION REQUIRED | Kelvin/probe method, category, spacing and fixture remain open. |
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| TPFLT1-TPFLT3 | Harwin S1751-46R FLT diagnostic test point | Open-drain diagnostic only. External pullup/interface is deliberately absent and SELECTION REQUIRED. |
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| TPILM1-TPILM3 | Harwin S1751-46R ILM test point | Probe only under a released test method; total ILM capacitance must remain below TI's 50 pF stability limit. |
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| TPRET1 | Return measurement point - SELECTION REQUIRED | Kelvin/probe method, category, spacing and fixture remain open. |
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