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Snapshot the post-boost-integration design outputs: BOM CSV, schematic PDF and SVG exports, and the ERC report against the current schematic. Confidence: high Scope-risk: narrow Directive: These are regenerated outputs - refresh them when the schematic changes
3.1 KiB
3.1 KiB
| 1 | Reference | Component | Value | Qty | Package | AliExpress Search/Link | AliExpress Price Est. | DigiKey Part Number | DigiKey Price Est. | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | ESP32-WROOM1 | ESP32-WROOM-32 DevKit | ESP32-C3-DevKitM-1 | 1 | Module | ESP32 WROOM 32 development board 30 pin | ~$4.00 | N/A (use Adafruit/SparkFun) | Type-C versions slightly more | |
| 3 | A4988 | A4988 Stepper Motor Driver | Pololu_Breakout_A4988 | 1 | Module | A4988 stepper motor driver module heatsink | ~$2.00 | Pololu #1182 | ~$5.95 | Usually comes with heatsink. Packs of 5 ~$5 |
| 4 | U1 | TPS61088 Boost Converter IC | TPS61088RHLR | 1 | QFN-20 3.5x3.5mm | TPS61088RHLR QFN20 | ~$2.28/ea (3pcs min ~$6.84) | 296-40481-1-ND | ~$3.89 | LCSC C87357 ~$0.44/ea as alternative |
| 5 | R1 | Resistor 0805 1% | 10K | 1 | 0805 | 0805 resistor 10K 1% | ~$1.50/100pcs | RC0805FR-0710KL | ~$0.10 | |
| 6 | R2 | Resistor 0805 1% | 10K | 1 | 0805 | 0805 resistor 10K 1% | ~$1.50/100pcs | RC0805FR-0710KL | ~$0.10 | |
| 7 | R5 | Resistor 0805 1% | 10K | 1 | 0805 | 0805 resistor 10K 1% | ~$1.50/100pcs | RC0805FR-0710KL | ~$0.10 | |
| 8 | R3 | Resistor 0805 1% (feedback divider) | 30.1K | 1 | 0805 | 0805 resistor 30.1K 1% SMD | ~$1.50/100pcs | RC0805FR-0730K1L | ~$0.10 | E96 value - not in basic kits. 1% required. |
| 9 | R4 | Resistor 0805 1% (feedback divider) | 190K | 1 | 0805 | 0805 resistor 190K 1% SMD | ~$1.50/100pcs | RC0805FR-07190KL | ~$0.10 | E96 value - not in basic kits. 1% required. |
| 10 | C8 | Capacitor 0805 C0G/NP0 50V | 47pF | 1 | 0805 | 0805 47pF capacitor C0G | ~$1.00/100pcs | Standard YAGEO/Samsung | ~$0.10 | C0G preferred for low-value caps |
| 11 | C9 | Capacitor 0805 X7R 50V | 100nF | 1 | 0805 | 0805 100nF 0.1uF capacitor | ~$1.00/100pcs | Standard YAGEO/Samsung | ~$0.10 | Decoupling cap |
| 12 | C6 | Capacitor 0805 X7R 50V | 22nF | 1 | 0805 | 0805 22nF capacitor X7R | ~$1.00/100pcs | Standard YAGEO/Samsung | ~$0.10 | TPS61088 compensation cap |
| 13 | C4 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | Must be 25V+ rated for 12V output |
| 14 | C5 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | Must be 25V+ rated for 12V output |
| 15 | C10 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | Must be 25V+ rated for 12V output |
| 16 | C11 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | Must be 25V+ rated for 12V output |
| 17 | C3 | Capacitor SMD Electrolytic 25V | 100uF | 1 | 6.3x5.8mm | 100uF 25V SMD aluminum electrolytic capacitor 6.3mm | ~$1.30/20pcs | Standard Nichicon/Panasonic | ~$0.50 | Verify pad matches KiCad footprint |
| 18 | L1 | Power Inductor Shielded SMD | 2.2uH | 1 | 12.6x12.6mm | SRP1265 2.2uH inductor | ~$3.00 | SRP1265A-2R2M (Bourns) | ~$2-3 | Must handle >=10A. Critical for TPS61088. DigiKey safest source. |
| 19 | SW1 | JST EH 3-pin Header | B3B-EH-A | 1 | Through-hole | JST EH 3 pin connector 2.5mm header | ~$1.00/10pcs | B3B-EH-A(LF)(SN) | ~$0.13 | 2.5mm pitch. Buy matching housings + crimp pins. |
| 20 | MotorPower1 | Screw Terminal 3-pin 5mm pitch | KF301-5.0-3P | 1 | Through-hole | KF301 3 pin 5mm screw terminal PCB | ~$0.50-1.00 | Standard part | ~$0.50-1.00 | KF301-5.0-3P common Chinese equivalent |
| 21 | StepperConnection1 | JST XH 4-pin Header | B4B-XH-A | 1 | Through-hole | JST XH 4 pin 2.54mm connector header | ~$1.00/20pcs | B4B-XH-A(LF)(SN) | ~$0.15 | 2.54mm pitch. Buy matching housings + crimp pins. |