PiFinder4
About the PiFinder4 PCB
PiFinder4 is an open source PCB design by brickbots, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 98 × 75 mm, with 150 components from 76 distinct parts.
Other key parts include the TPS61088RHLR, BNO055, LTC2954ITS8-1#TRPBF, RT9742CGJ5 and USBLC6-2SC6. By type, the board carries 50 capacitors, 41 resistors, 20 diodes, 11 switches, 8 ICs and 7 connectors.
It belongs with the science & space designs in this gallery.
From the project
A plate solving telescope finder based around a Raspberry PI and RPI HQ Camera
For an overview of what the PiFinder™ is and how it came to be visit the official project website at PiFinder.io
The PiFinder™ uses the Cedar Detect and Cedar Solve libraries by smroid. Cedar Solve is licensed under Apache-2.0.
Cedar Detect is published under the Functional Source License (FSL-1.1-MIT), which permits broad non-commercial use but excludes commercial uses that compete with Cedar Detect. Because the PiFinder™ is also offered commercially, it bundles and distributes the Cedar Detect binaries under a separate license granted expressly by the copyright holder — not under the…
Main components on the PiFinder4
PiFinder4 bill of materials (BOM)
150 components, 76 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS61088RHLR | RHL0020A | U1 |
| 1 | BNO055 | LGA-28_5.2x3.8mm_P0.5mm | U2 |
| 1 | LTC2954ITS8-1#TRPBF | TSOT-23_TS8_LIT | U3 |
| 2 | RT9742CGJ5 | TSOT-23-5 | U4, U5 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U7 |
| 1 | LM51571RTER | LM51571 | U8 |
| 1 | BQ25895RTW | Texas_RTW_WQFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias | U9 |
| 1 | CM4102008 | MODULE_CM4102008 | M1 |
| 1 | C280842 Q_NPN_EBC | PF_SOT-23-NPN | Q1 |
| 1 | AO3400A | SOT-23 | Q2 |
| 1 | 32.768kHz | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 503398-1892 | MOLEX_503398-1892 | J1 |
| 2 | USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J2, J7 |
| 1 | Battery | JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical | J4 |
| 1 | ~ | TE_3-1734592-0 | J5 |
| 1 | JST 6pin connector - SM06B-SRSS-TB | JST_SH_BM06B-SRSS-TB_1x06-1MP_P1.00mm_Vertical | J6 |
| 1 | FH12-22S-0.5SH55 | CONN_FH12-22S-0.5SH55_HIR | J8 |
| 1 | MLT-5020 | MagneticBuzzer_HuaWha_MLT-5020 | BZ1 |
| 10 | C4364377 SW_Push | SW_Push_6x6mm_SMT_withhole_tight | SW0, SW1, SW2, SW3, SW4, SW5, SW6, SW7 +2 |
| 1 | SW_PWR | SW_Push_6x6mm_SMT_withhole_tight | SW10 |
Show 56 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MU-AS70R MU-AS90R | MUAS70R | SW_5WAY1 |
| 3 | SW_Push | SW_Push_6x6mm_SMT_withhole_tight | SW_MINUS1, SW_PLUS1, SW_SQUARE1 |
| 16 | LED | LED_1210_3225Metric | D1, D2, D3, D4, D5, D6, D7, D8 +8 |
| 2 | D | D_SOD-123 | D15, D16 |
| 1 | SMAJ5.0A | D_SMA | D19 |
| 1 | SS210 | D_SMA | D21 |
| 1 | 120Ω@100MHz | L_1206_3216Metric | FB1 |
| 1 | 22uH | L_Wurth_WE-LQSH-3012 | L1 |
| 2 | 2.2uH | L_Coilcraft_XAL4020-XXX | L2, L4 |
| 1 | 1UF 10uF | C_0805_2012Metric | C1 |
| 1 | 100NF 100nF | C_0603_1608Metric | C2 |
| 1 | 22PF 1uF | C_0603_1608Metric | C3 |
| 1 | 22PF 100nF | C_0603_1608Metric | C4 |
| 4 | 10uf | C_0805_2012Metric | C5, C27, C33, C52 |
| 2 | 10uF | C_1206_3216Metric | C6, C7 |
| 13 | 100nF | C_0603_1608Metric | C8, C9, C14, C17, C19, C22, C23, C25 +5 |
| 1 | 220pF | C_0402_1005Metric | C10 |
| 6 | 1uF | C_0603_1608Metric | C11, C18, C20, C32, C40, C53 |
| 2 | 22pF | C_0402_1005Metric | C12, C13 |
| 2 | 4.7uF | C_1206_3216Metric | C15, C16 |
| 2 | 10uF | C_0603_1608Metric | C21, C48 |
| 1 | 10nF | C_0402_1005Metric | C24 |
| 1 | 4.7uF | CP_Elec_4x5.4 | C26 |
| 5 | 22uF | C_0805_2012Metric | C28, C29, C43, C44, C45 |
| 1 | 15nf | C_0402_1005Metric | C31 |
| 1 | 47uF | C_1206_3216Metric | C42 |
| 1 | 5.6nF | C_0603_1608Metric | C46 |
| 2 | 47nF | C_0603_1608Metric | C47, C50 |
| 1 | 4.7uF | C_0603_1608Metric | C49 |
| 1 | 2.2uF | C_0603_1608Metric | C54 |
| 1 | 73.2k | R_0402_1005Metric | R1 |
| 1 | 330 49.9k | R_0402_1005Metric | R2 |
| 1 | 10K 3.09k | R_0402_1005Metric | R3 |
| 1 | 10K 4.7k | R_0402_1005Metric | R4 |
| 1 | 10K 680 | R_0402_1005Metric | R5 |
| 1 | 10K 180R | R_0402_1005Metric | R6 |
| 6 | 10k | R_0402_1005Metric | R7, R8, R11, R12, R13, R32 |
| 1 | 44.2k | R_0402_1005Metric | R9 |
| 3 | 100k | R_0402_1005Metric | R10, R15, R23 |
| 1 | 12k | R_0402_1005Metric | R14 |
| 4 | 22 | R_0402_1005Metric | R16, R27, R28, R29 |
| 1 | 330 | R_0402_1005Metric | R17 |
| 4 | 5.1k | R_0402_1005Metric | R18, R19, R20, R21 |
| 1 | 6.04k | R_0402_1005Metric | R22 |
| 1 | 50 | R_0603_1608Metric | R24 |
| 1 | 1.8M | R_0402_1005Metric | R25 |
| 1 | 1k | R_0402_1005Metric | R26 |
| 2 | 33 | R_0402_1005Metric | R30, R31 |
| 2 | 680 | R_0402_1005Metric | R33, R34 |
| 1 | 5.1 | R_0402_1005Metric | R35 |
| 1 | 182k 1% | R_0402_1005Metric | R36 |
| 1 | 56k 1% | R_0402_1005Metric | R37 |
| 1 | 11k | R_0402_1005Metric | R38 |
| 1 | 150k 1% | R_0402_1005Metric | R39 |
| 1 | 270k 1% | R_0402_1005Metric | R40 |
| 1 | 4.7k | R_0402_1005Metric | R46 |
PiFinder4 design files
The KiCad project lives in the brickbots/PiFinder repository on GitHub; these links point at the commit this page was built from.
PiFinder4: common questions
How big is the PiFinder4 PCB?
The PiFinder4 measures 98 × 75 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the PiFinder4?
150 components, from 76 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the PiFinder4 design files?
From the brickbots/PiFinder repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the PiFinder4 design in my own project?
Yes, under the terms of its GPL-3.0 license, which brickbots chose for the repository.
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