Dart hat
About the Dart hat
Dart hat is an open source Raspberry Pi PCB design by kemfic, published on GitHub. It is a 4-layer board measuring 114 × 65 mm, with 111 components from 60 distinct parts.
Its main chip is the Raspberry_Pi_2_3, from the Raspberry Pi family. Other key parts include the PCA9615DPJ, CAT24C32YI-GT3, MCP2515-xST, MCP2562-H-P and BMI088. By type, the board carries 36 capacitors, 35 resistors, 8 ICs, 8 diodes, 5 jumpers and 4 modules.
It belongs with the dev boards & breakouts designs in this gallery.
Main components on the Dart hat
Dart hat bill of materials (BOM)
111 components, 60 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PCA9615DPJ | PCA9615_SOP50P490 | IC1 |
| 1 | CAT24C32YI-GT3 | SOP65P640X120-8N | U1 |
| 1 | MCP2515-xST | SOP65P640X110-20N | U2 |
| 1 | MCP2562-H-P | SOIC127P600X175-8N | U3 |
| 1 | BMI088 | PQFN50P450X300X100-16N | U4 |
| 1 | PCA9685PW | TSSOP-28_4.4x9.7mm_P0.65mm | U5 |
| 1 | IFX27001TFV | TO-252-2 | U6 |
| 1 | LM25088MH-2 | SOP65P640X120-17N | U7 |
| 4 | Motor_Servo | PinHeader_1x03_P2.54mm_Vertical | M1, M2, M3, M4 |
| 2 | SI7611DN-T1-GE3 | VISHAY_SIS468DN-T1-GE3 | Q1, Q2 |
| 1 | DMMT5401 | SOT95P285X140-6N | Q3 |
| 1 | Q_NMOS_SGD | CSD18511Q5AT | Q4 |
| 1 | 16MHz | Crystal_HC49-U_Vertical | Y1 |
| 1 | XT60 Female | AMASS_XT60PW-M | J1 |
| 1 | Raspberry_Pi_2_3 | PinHeader_2x20_P2.54mm_Vertical | J2 |
| 1 | CAN_CON | JST_PH_S4B-PH-SM4-TB_1x04-1MP_P2.00mm_Horizontal | J3 |
| 1 | SM07B-SRSS-TBLFSN | JST-SM07B-SRSS-TBLFSN-0 | J4 |
| 3 | 470uF | CP_Elec_10x10.5 | CP1, CP2, CP4 |
| 1 | 3A | Fuse_Bourns_MF-SM_7.98x5.44mm | F1 |
| 3 | Jumper_NO_Small | PinHeader_1x02_P2.54mm_Vertical | JP1, JP5, JP7 |
Show 40 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | Jumper | PinHeader_1x02_P2.54mm_Vertical | JP2, JP3 |
| 1 | VAL** | mouse-bite-2mm-slot | mouse-bite-2mm-slot |
| 1 | D_Zener | D_SOT-23_ANK | D1 |
| 2 | LED_Small | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D3 |
| 1 | D_Schottky | D_SOD-128 | D4 |
| 1 | PWR_LED_SERVO | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5 |
| 1 | D_Schottky_KKA | D_SOD-128 | D6 |
| 1 | NU | D_SOD-128 | D7 |
| 1 | Diode_Schottky_Common_Cathode | NEXPERIA_PMEG045V150EPDZ | D8 |
| 1 | 6.8uH | L_6.3x6.3_H3 | L1 |
| 9 | 10uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C6, C10, C11, C12, C14, C16, C17 +1 |
| 7 | 0.1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C5, C7, C8, C13, C15, C30 |
| 2 | 36pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C3, C4 |
| 2 | 1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C9, C29 |
| 5 | 2.2uF | C_1210_3225Metric_Pad1.42x2.65mm_HandSolder | C18, C19, C20, C21, C23 |
| 1 | 270pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C22 |
| 2 | 0.022uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C24, C27 |
| 2 | 100pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C26, C31 |
| 2 | 0.1uF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C28, C36 |
| 1 | 0.015uF | C_0402_1005Metric | C32 |
| 1 | 1000pF | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C33 |
| 2 | 47uF | C_1210_3225Metric_Pad1.42x2.65mm_HandSolder | C34, C35 |
| 4 | 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R2, R3, R15 |
| 4 | 120 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4, R14, R16, R17 |
| 1 | 62 | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R5 |
| 2 | 3.9k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R6, R7 |
| 5 | 4.7k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R8, R9, R11, R12, R13 |
| 1 | 1k | R_0402_1005Metric | R10 |
| 1 | 150 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R18 |
| 1 | 10k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R19 |
| 4 | 220 | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R20, R21, R22, R23 |
| 1 | NU | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R24 |
| 4 | 390 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R25, R26, R34, R35 |
| 1 | 24.9k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R27 |
| 1 | 0.01 | RESC2037X70N | R28 |
| 1 | 18k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R29 |
| 1 | 5.11 | R_2512_6332Metric_Pad1.52x3.35mm_HandSolder | R30 |
| 1 | 10 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R31 |
| 1 | 5.11k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R32 |
| 1 | 1.62k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R33 |
Dart hat design files
The KiCad project lives in the kemfic/dart-hat repository on GitHub; these links point at the commit this page was built from.
- Layoutdart-hat.kicad_pcb
Dart hat: common questions
What microcontroller does the Dart hat use?
The Dart hat is built around the Raspberry_Pi_2_3, from the Raspberry Pi family.
How big is the Dart hat?
The Dart hat measures 114 × 65 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Dart hat?
111 components, from 60 distinct parts. The full bill of materials is listed on this page.
Where can I download the Dart hat design files?
From the kemfic/dart-hat repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Dart hat design in my own project?
The repository has no license, so all rights stay with kemfic. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Dart hat without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.
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