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nicksan222
Make your move. Watch the board come alive. ♟️✨
Components (29)
| Reference | Value | Description |
|---|---|---|
| Q1 | Si4403DDY-T1-GE3 | LED rail switch, +5V to LED_5V |
| Q2 | BSS138LT1G | LED_EN inverter driving the LED switch gate and buffer enables |
| U1-U4,U70-U73 | TCA9554DWR | Polled 8-bit I2C GPIO expander |
| U5 | SN74AHCT125DR | Quad 5 V buffer accepts 3.3 V SPI clock and data |
| U6-U69 | SK9822-A | Clocked 5050 RGB LED |
| U74 | TPS259474ARPWR | Input eFuse: inrush, OVLO, reverse blocking, circuit breaker |
| U75 | SN74LVC1G97DBVR | LED_OE_N = Schmitt(Q1 gate) OR LED_EN_N: buffer on only once LED_5V is up |
| C1,C140 | 10ZLJ560M8X11.5 | LED rail bulk capacitor |
| C2 | CC0805KKX5R6BB106 | Rail decoupling capacitor |
| C3-C139,C146 | CC0603KRX7R9BB104 | Buffer decoupling capacitor,Expander decoupling capacitor,Local Hall-sensor decoupling capacitor,Local LED decoupling capacitor,U75 decoupling capacitor |
| C141 | CC0603KRX7R8BB105 | eFuse input bypass |
| C142,C144,C145 | CC0603KRX7R9BB103 | OVLO spike filter,Q1 gate-to-drain ramp capacitor,eFuse dVdt |
| C143 | CC0603KRX7R9BB102 | eFuse ITIMER |
| D1 | SMBJ12CA | Bidirectional transient suppressor on the eFuse input |
| F1 | 0453002.MR | Input over-current protection on the jack tip |
| HS1-HS64 | DRV5032FCDBZR | Omnipolar active-low Hall-effect square sensor |
| J1 | PPPC202LFBN-RC | Raspberry Pi Zero 2 W GPIO socket |
| J2 | SM04B-SRSS-TB | OLED harness header (module wired by its pad labels) |
| J4 | B4PS-VH | Power entry: jack and rocker harness |
| R3 | RC0603FR-071K65L | eFuse current limit (ILM) |
| R4,R6 | RT0603BRD07604KL | EN divider from RUN, top,OVLO divider, top |
| R5 | RT0603BRD07169KL | OVLO divider, bottom |
| R7 | RC0603FR-07261KL | EN divider, bottom |
| R8,R13 | RC0603FR-071KL | LED_EN series to Q2 gate,Rocker contact wetting load |
| R9-R12 | RC0603FR-0756RL | LED data source termination,LED rank-turn data source termination |
| R14,R16 | RC0603FR-07100KL | Q1 gate drive (turn-on ramp),Q2 gate pull-down (LED rail off) |
| R15,R17,R18 | RC0603FR-0710KL | LED_CLK_5V pull-down while the buffer is Hi-Z,LED_DATA_5V pull-down while the buffer is Hi-Z,LED_EN_N pull-up |
| SW1-SW12 | TL1105CF100Q | Momentary panel button, 8.0 mm round stem |
| TP1-TP7 | S1751-46R | 3.3 V test point,5 V test point,Buffered LED clock test point,Buffered LED data test point,Ground test point,I2C clock test point,I2C data test point |