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ryanbjohnson
| Reference | Value | Description |
|---|---|---|
| Q1,Q2 | AO3400A | K1 low-side relay coil driver placeholder,K2 low-side relay coil driver placeholder |
| U1 | LM5164DDAR | Candidate 100 V input buck regulator; final support values TBD |
| U2 | AP63203WU-7 | Candidate 5 V to 3.3 V regulator; final part and values TBD |
| U3 | TPS3839G33DBZR | 3.3 V reset/brownout supervisor placeholder |
| U4 | TPS3823-33DBVR | External watchdog supervisor placeholder |
| U5 | ESP32-WROOM-32E-N16 | ESP32 control block placeholder |
| U6 |
| MCP23017 I2C GPIO expander; supply, I2C, address-low, and reset-high pins captured; GPIO assignment pending |
| U7 | ADS1115IDGSR | ADS1115 external ADC for thermistor, SFS, and rail monitoring |
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| U8 | NXE1S0505MC-R7 | Murata NXE1S0505MC isolated 5 V supply for remote dry-contact wetting |
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| U9 | H11AA1M_TH | TH monitor AC-input optocoupler; pins remain no-connected until input resistor/sense topology is captured |
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| U10 | H11AA1M_IND | IND monitor AC-input optocoupler; pins remain no-connected until input resistor/sense topology is captured |
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| U11 | H11AA1M_VAL | VAL monitor AC-input optocoupler; pins remain no-connected until input resistor/sense topology is captured |
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| U12 | H11AA1M_24VAC | 24 VAC monitor AC-input optocoupler; pins remain no-connected until input resistor/sense topology is captured |
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| U14 | THERMISTOR_AFE_TBD | Schematic-only thermistor divider/filter/protection review placeholder; footprint selected after AFE topology review |
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| U16 | TLV6700DDCR_THERM | Thermistor independent hardware window comparator |
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| U17 | TLV6700DDCR_SFS | SFS independent hardware window comparator |
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| U18 | OPA333AIDBVR | SFS excitation/filter/protection/buffer placeholder |
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| U19 | LTV-817S_SPA_CANDIDATE | Spa external-control dry-contact isolated sense optocoupler |
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| U20 | LTV-817S_POOL_CANDIDATE | Pool external-control dry-contact isolated sense optocoupler |
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| C1 | 470uF_63V | VRAW bulk capacitor candidate |
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| C2,C3 | 100nF_REMOTE_FILTER_TBD | Pool optocoupler logic-side debounce/filter capacitor,Spa optocoupler logic-side debounce/filter capacitor |
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| C4 | 2.2uF_100V_VRAW_IN_TBD | LM5164 local input bypass candidate |
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| C5 | 2.2nF_50V_BST_5V | LM5164 bootstrap capacitor candidate |
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| C6 | 100nF_BST_3V3 | AP63203 bootstrap capacitor candidate |
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| C7 | 10uF_50V_3V3_IN_TBD | AP63203 input capacitor candidate |
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| C8 | 22uF_10V_3V3_OUT_TBD | AP63203 output capacitor candidate |
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| C9 | THERM_ADC_FILTER_TBD | Water thermistor ADC low-pass filter placeholder; final capacitance/leakage TBD |
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| C10 | SFS_ADC_FILTER_TBD | SFS ADC low-pass filter placeholder; final capacitance/leakage TBD after SFS characterization |
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| C11 | VRAW_MON_FILTER_TBD | VRAW monitor ADC filter placeholder; final capacitance/leakage TBD |
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| D1 | MB10S | 24 VAC to VRAW bridge rectifier |
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| D2 | K1_FLYBACK_TBD | K1 relay coil flyback diode placeholder |
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| D3 | K2_FLYBACK_TBD | K2 relay coil flyback diode placeholder |
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| F1 | 0.5A_FUSE | 24 VAC input overcurrent protection |
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| J1 | 24VAC_IN | 24 VAC transformer secondary and optional shield reference |
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| J2 | OPERATING_CONTROL | Manual Rev. C Figure 24 operating-control terminal group |
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| J3 | SAFETY_STACK | Manual Rev. C Figure 24 safety stack terminals |
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| J4 | THERMISTOR | Manual-assumed two-pin water thermistor connector |
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| J5 | EXT_CONTROL | Pool/Common/Spa external-control dry-contact sense connector |
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| K1,K2 | G5Q-1A-DC5 | First normally-open relay contact in TH heat-request chain,Second normally-open relay contact in TH heat-request chain |
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| L1 | 68uH | 5 V buck inductor candidate |
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| L2 | 2.2uH | 3.3 V buck inductor candidate |
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| MOV1 | V47ZA1P | 24 VAC input MOV surge clamp candidate |
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| R1,R2 | 2.2k_REMOTE_WET_TBD | Pool dry-contact wetting current limiter; final value requires optocoupler/current review,Spa dry-contact wetting current limiter; final value requires optocoupler/current review |
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| R3,R4 | 10k_REMOTE_PULLUP | Pool optocoupler logic-side pullup,Spa optocoupler logic-side pullup |
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| R5 | RFB5V_TOP_TBD | LM5164 feedback top resistor; final value TBD |
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| R6 | RFB5V_BOT_TBD | LM5164 feedback bottom resistor; final value TBD |
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| R7 | RON5V_TBD | LM5164 RON timing resistor; final value TBD |
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| R8 | VAL_OPTO_LIMIT_A_TBD | First series current-limit resistor for VAL AC optocoupler monitor; final value/power/surge rating TBD |
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| R9 | VAL_OPTO_LIMIT_B_TBD | Second series current-limit resistor for VAL AC optocoupler monitor; final value/power/surge rating TBD |
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| R10 | K1_GATE_PULLDOWN_TBD | K1 relay MOSFET gate pulldown; final value TBD after drive topology review |
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| R11 | K2_GATE_PULLDOWN_TBD | K2 relay MOSFET gate pulldown; final value TBD after drive topology review |
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| R12 | VAL_OPTO_PULLUP_TBD | VAL optocoupler logic-side pullup to 3.3 V; final value/filtering TBD after GPIO timing and leakage review |
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| R13 | TH_OPTO_LIMIT_A_TBD | First series current-limit resistor for TH AC optocoupler monitor; final value/power/surge rating TBD |
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| R14 | TH_OPTO_LIMIT_B_TBD | Second series current-limit resistor for TH AC optocoupler monitor; final value/power/surge rating TBD |
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| R15 | TH_OPTO_PULLUP_TBD | TH optocoupler logic-side pullup to 3.3 V; final value/filtering TBD after GPIO timing and leakage review |
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| R16 | IND_OPTO_LIMIT_A_TBD | First series current-limit resistor for IND AC optocoupler monitor; final value/power/surge rating TBD |
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| R17 | IND_OPTO_LIMIT_B_TBD | Second series current-limit resistor for IND AC optocoupler monitor; final value/power/surge rating TBD |
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| R18 | IND_OPTO_PULLUP_TBD | IND optocoupler logic-side pullup to 3.3 V; final value/filtering TBD after GPIO timing and leakage review |
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| R19 | VAC24_OPTO_LIMIT_A_TBD | First series current-limit resistor for 24 VAC AC optocoupler monitor; final value/power/surge rating TBD |
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| R20 | VAC24_OPTO_LIMIT_B_TBD | Second series current-limit resistor for 24 VAC AC optocoupler monitor; final value/power/surge rating TBD |
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| R21 | VAC24_OPTO_PULLUP_TBD | 24 VAC optocoupler logic-side pullup to 3.3 V; final value/filtering TBD after GPIO timing and leakage review |
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| R22 | K1_GATE_SERIES_TBD | K1 relay MOSFET series gate resistor placeholder; final value TBD after drive topology review |
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| R23 | K2_GATE_SERIES_TBD | K2 relay MOSFET series gate resistor placeholder; final value TBD after drive topology review |
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| R24 | THERM_PULLUP_TBD | Water thermistor divider pullup placeholder; final value/rail TBD after field curve verification |
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| R25 | I2C_SDA_PULLUP_TBD | I2C SDA pullup placeholder; final value depends on bus capacitance and firmware speed |
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| R26 | I2C_SCL_PULLUP_TBD | I2C SCL pullup placeholder; final value depends on bus capacitance and firmware speed |
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| R27 | SFS_INPUT_SERIES_TBD | SFS input series/protection placeholder; final value depends on measured installed SFS electrical type |
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| R28 | VRAW_MON_TOP_TBD | VRAW monitor divider top resistor placeholder; final value/power/leakage TBD |
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| R29 | VRAW_MON_BOT_TBD | VRAW monitor divider bottom resistor placeholder to ADC ground; final value/leakage TBD |
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| R30 | THERM_RANGE_OK_PULLUP_TBD | Thermistor range comparator output pullup placeholder; final value depends on comparator output topology and leakage |
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| R31 | SFS_RANGE_OK_PULLUP_TBD | SFS range comparator output pullup placeholder; final value depends on comparator output topology and leakage |
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| R32 | THERM_LOW_REF_TOP_TBD | Thermistor low-threshold top divider placeholder; final value TBD from sensor curve and comparator input requirements |
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| R33 | THERM_LOW_REF_BOT_TBD | Thermistor low-threshold bottom divider placeholder; final value TBD from sensor curve and comparator input requirements |
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| R34 | THERM_HIGH_REF_TOP_TBD | Thermistor high-threshold top divider placeholder; final value TBD from sensor curve and comparator input requirements |
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| R35 | THERM_HIGH_REF_BOT_TBD | Thermistor high-threshold bottom divider placeholder; final value TBD from sensor curve and comparator input requirements |
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| R36 | SFS_LOW_REF_TOP_TBD | SFS low-threshold top divider placeholder; final value TBD after installed SFS characterization |
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| R37 | SFS_LOW_REF_BOT_TBD | SFS low-threshold bottom divider placeholder; final value TBD after installed SFS characterization |
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| R38 | SFS_HIGH_REF_TOP_TBD | SFS high-threshold top divider placeholder; final value TBD after installed SFS characterization |
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| R39 | SFS_HIGH_REF_BOT_TBD | SFS high-threshold bottom divider placeholder; final value TBD after installed SFS characterization |
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| TVS1 | SMBJ51CA | 24 VAC bidirectional TVS clamp candidate |
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