7.1 KiB
7.1 KiB
| 1 | Reference | Component | Value | Qty | Package | AliExpress Search/Link | AliExpress Price Est. | DigiKey Part Number | DigiKey Price Est. | Purchase | 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) | SKIP - user sources separately | Pinout-specific module sourced from special supplier. Do not order. | |||
| 3 | A4988 | A4988 Stepper Motor Driver | Pololu_Breakout_A4988 | 1 | Module | A4988 stepper motor driver module heatsink | ~$2.00 | Pololu #1182 | ~$5.95 | AliExpress 5-pack: https://www.aliexpress.com/wholesale?SearchText=A4988+stepper+driver+5pcs (~$5-8 for 5pcs with heatsinks) | Get the 5-pack from any AliExpress seller; quality varies but functional. Heatsinks included. | ||
| 4 | U1 | TPS61088 Boost Converter IC | TPS61088RHLR | 1 | VQFN-20 4.5x3.5mm (RHL) | TPS61088RHLR QFN20 | ~$2.28/ea (3pcs min ~$6.84) | 296-40481-1-ND | ~$3.89 | LCSC C87357: https://www.lcsc.com/product-detail/DC-DC-Converters_TI_TPS61088RHLR_TPS61088RHLR_C87357.html (~$0.61/ea, 14k in stock) | PACKAGE CORRECTION: TPS61088 RHL is 4.5x3.5mm not 3.5x3.5mm. PCB silkscreen says TPS61088QRHLRQ1 (auto Q1) but non-Q1 TPS61088RHLR is drop-in substitute with identical pinout - use the cheaper non-Q1. Pinout verified: pins 1/3/4/5/6/7/8/9/11/12/15 = VIN/EN/SS-TR/COMP/FB/AGND/PGOOD/VOUT/BST/SW/PGND. | ||
| 5 | R1 | Resistor 0805 1% | 10K | 1 | 0805 | 0805 resistor 10K 1% | ~$1.50/100pcs | RC0805FR-0710KL | ~$0.10 | COMBO: 0805 E96 1% resistor sample book (170 values x 25pcs, ~$25 covers R1+R2+R3+R4+R5 and lifetime supply) | Use combo kit - see Notes section below. | ||
| 6 | R2 | Resistor 0805 1% | 10K | 1 | 0805 | 0805 resistor 10K 1% | ~$1.50/100pcs | RC0805FR-0710KL | ~$0.10 | COVERED BY RESISTOR KIT | Use the 0805 E96 sample book. | ||
| 7 | R5 | Resistor 0805 1% | 10K | 1 | 0805 | 0805 resistor 10K 1% | ~$1.50/100pcs | RC0805FR-0710KL | ~$0.10 | COVERED BY RESISTOR KIT | Use the 0805 E96 sample book. | ||
| 8 | R3 | Resistor 0805 1% (feedback divider) | 30.1K | 1 | 0805 | 0805 resistor 30.1K 1% SMD | ~$1.50/100pcs | RC0805FR-0730K1L | ~$0.10 | COVERED BY 170-value E96 kit (30.1K is E96 standard value) | E96 standard - in any decent E96 kit like Amazon B09Z2RDW2F. If buying singles: LCSC. | ||
| 9 | R4 | Resistor 0805 1% (feedback divider) | 190K | 1 | 0805 | 0805 resistor 190K 1% SMD | ~$1.50/100pcs | RC0805FR-07190KL | ~$0.10 | COVERED BY 170-value E96 kit (190K is E96 standard value) | E96 standard - in any decent E96 kit. Critical to feedback divider - must be 1%. | ||
| 10 | C8 | Capacitor 0805 C0G/NP0 50V | 47pF | 1 | 0805 | 0805 47pF capacitor C0G | ~$1.00/100pcs | Standard YAGEO/Samsung | ~$0.10 | COMBO: 0805 SMD ceramic capacitor kit covering 22nF/47pF/100nF (e.g. AliExpress 0603/0805/1206 50V 22p-22uF kit, ~$5) | Use combo cap kit - C0G preferred but X7R acceptable at this value. | ||
| 11 | C9 | Capacitor 0805 X7R 50V | 100nF | 1 | 0805 | 0805 100nF 0.1uF capacitor | ~$1.00/100pcs | Standard YAGEO/Samsung | ~$0.10 | COVERED BY CAPACITOR KIT | Universal decoupling value - included in every cap kit. | ||
| 12 | C6 | Capacitor 0805 X7R 50V | 22nF | 1 | 0805 | 0805 22nF capacitor X7R | ~$1.00/100pcs | Standard YAGEO/Samsung | ~$0.10 | COVERED BY CAPACITOR KIT | Compensation cap - tolerance not critical. | ||
| 13 | C4 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | AliExpress 50-pack CL31A226KAHNNNE: https://www.aliexpress.com/item/32751090379.html (~$8/50pcs) - one order covers C4/C5/C10/C11 | Samsung CL31A226KAHNNNE is direct equivalent to Murata GRM31CR61E226KE15L. Must be 25V+ (12V output bus). | ||
| 14 | C5 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | COVERED BY 50-PACK ABOVE | Same as C4 - one 50-pack covers all four positions. | ||
| 15 | C10 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | COVERED BY 50-PACK ABOVE | Same as C4. | ||
| 16 | C11 | Capacitor 1206 X5R 25V | 22uF | 1 | 1206 | 1206 SMD capacitor 22uF 25V | ~$2.50/100pcs | GRM31CR61E226KE15L | ~$0.50 | COVERED BY 50-PACK ABOVE | Same as C4. | ||
| 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 | AliExpress 10-pack: search '100uF 25V SMD 6.3x5.8mm' (~$2-3 for 10pcs). LCSC: Lelon VEJ101M1EQRJ ~$0.15/ea | Verify pad layout matches KiCad footprint (CP_Elec_6.3x5.8). Cheaper SMD electrolytics from JAMICON/Lelon are fine. | ||
| 18 | L1 | Power Inductor Shielded SMD | 2.2uH | 1 | 12.6x12.6mm | SRP1265 2.2uH inductor | ~$3.00 | SRP1265A-2R2M (Bourns) | ~$2-3 | BEST: LCSC TDK SPM10065VT-2R2M-D C1015860 (10.5x10mm, 16.6A, ~$1.50). Alt: DigiKey Bourns SRP1265A-2R2M (12.6x12.6mm, 22A, ~$3) | CRITICAL - must handle >=10A continuous. TDK SPM10065 is smaller and cheaper than Bourns SRP1265 - verify your KiCad footprint matches the chosen part's pad pattern BEFORE ordering. Avoid no-name AliExpress inductors - saturation current is often misrated. | ||
| 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 | AliExpress JST-EH 2.5mm 3-pin kit with housing+crimps (50-set ~$4-6, search 'JST-EH 2.5mm 3-pin housing crimp') | Make sure to get matching female housings and crimp terminals - not just the PCB header. EH series specifically (NOT XH or PH). | ||
| 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 | AliExpress 10-pack: https://www.aliexpress.com/item/32842003333.html (~$0.70/10pcs) | Generic Chinese part - any KF301-5.0-3P seller works. | ||
| 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 | COMBO: AliExpress JST-XH 2.54mm full kit (560pcs 2/3/4/5/6-pin housing+crimps+headers, ~$8-12) - massive overkill but covers all future projects | Search 'JST-XH 2.54mm connector kit 560pcs'. Brand names: Taiss | GTIWUNG | HALJIA all sell equivalent kits. |
| 22 | |||||||||||||
| 23 | SUMMARY | ||||||||||||
| 24 | |||||||||||||
| 25 | COMBO PACK RECOMMENDATIONS: | ||||||||||||
| 26 | 1. 0805 E96 1% Resistor Sample Book (170 values x 25pcs) | ~$15-25 | Covers R1/R2/R3/R4/R5 + every future project. Must be E96 (1%) to include 30.1K and 190K. | ||||||||||
| 27 | 2. 0805 SMD Ceramic Capacitor Kit (50V, 22pF-22uF range) | ~$5-15 | Covers C6/C8/C9 (22nF/47pF/100nF). Make sure kit includes those specific values. | ||||||||||
| 28 | 3. 1206 22uF 25V X5R 50-pack | ~$8 | Covers C4/C5/C10/C11. | ||||||||||
| 29 | 4. JST-XH 2.54mm Connector Kit (multi-pin) | ~$8-12 | Covers StepperConnection1 (4-pin) + future projects. | ||||||||||
| 30 | 5. JST-EH 2.5mm 3-pin Kit (housing+crimps+header) | ~$4-6 | Covers SW1. Make sure it's EH series specifically. | ||||||||||
| 31 | |||||||||||||
| 32 | SINGLE-PART KEY ITEMS: | ||||||||||||
| 33 | U1 TPS61088RHLR - LCSC C87357 | ~$0.61 | The non-Q1 variant is drop-in substitute for TPS61088QRHLRQ1 on PCB silkscreen. Same RHL package same pinout. | ||||||||||
| 34 | L1 TDK SPM10065VT-2R2M-D - LCSC C1015860 | ~$1.50 | VERIFY footprint match before ordering - SPM10065 (10.5x10mm) vs original Bourns SRP1265 (12.6x12.6mm). | ||||||||||
| 35 | C3 100uF 25V SMD electrolytic - any 6.3x5.8mm 10-pack | ~$2-3 | Verify pad layout matches your KiCad footprint. | ||||||||||
| 36 | A4988 5-pack with heatsinks - AliExpress | ~$5-8 | Generic functional drivers. | ||||||||||
| 37 | KF301-5.0-3P 10-pack - AliExpress | ~$0.70 | Generic part. | ||||||||||
| 38 | |||||||||||||
| 39 | TOTAL ESTIMATED COST: | ~$50-80 | One-time setup with combo kits. ~$10 in actually-used parts per board. ESP32 module sourced separately by user. |