Hubble metal detector
About the Hubble metal detector PCB
Hubble metal detector is an open source STM32 PCB design by zartarn15, published on GitHub. It is a 2-layer board measuring 80 × 74 mm, with 140 components from 63 distinct parts.
Its main chip is the STM32F103RB, from the STM32 family. Other key parts include the TPS63031, TP4056, SN74LVC1G04, STM32F100RB and DOGL128W-6. By type, the board carries 63 capacitors, 32 resistors, 9 ICs, 9 connectors, 8 inductors and 6 diodes.
From the project
STM32-based digital metal detector with custom hardware and embedded DSP firmware.
Hubble is a fully functional digital metal detector prototype built from scratch to detect coins and jewelry using embedded signal processing techniques. It features a dual STM32F1 microcontroller architecture, designed with a forward-looking concept: separating the detecting coil unit and control unit with an infrared wireless link. The detector operates on multiple frequencies and implements functionality typical for professional metal detectors. This project was developed entirely by a single engineer, including hardware design, firmware, PCB layout, and mechanical assembly. Source code…
Main components on the Hubble metal detector
Hubble metal detector bill of materials (BOM)
140 components, 63 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS63031 | VSOP-10_2.5x2.5mm_Pitch0.5mm | U101 |
| 1 | TP4056 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm_ThermalVias | U102 |
| 1 | SN74LVC1G04 | SOT-353_SC-70-5 | U103 |
| 1 | STM32F103RB | LQFP-64_10x10mm_Pitch0.5mm | U201 |
| 1 | STM32F100RB | LQFP-64_10x10mm_Pitch0.5mm | U202 |
| 1 | DOGL128W-6 | EA_DOGL128W-6 | U203 |
| 2 | TDA2822 | SO-8_3.9x4.9mm_P1.27mm | U301, U303 |
| 1 | LT6202, LT6230 | TSOT-23-6 | U302 |
| 2 | IRLML6402 | SOT-23 | Q102, Q201 |
| 1 | BAT | PinHeader_1x02_P2.54mm_Vertical | J101 |
| 1 | CRG | PinHeader_1x02_P2.54mm_Vertical | J102 |
| 2 | DBG | PinHeader_1x02_P2.54mm_Vertical | J201, J203 |
| 2 | SWD | PinHeader_1x03_P2.54mm_Vertical | J202, J204 |
| 1 | COIL_TX | PinHeader_1x02_P2.54mm_Vertical | J301 |
| 1 | COIL_RX | PinHeader_1x03_P2.54mm_Vertical | J302 |
| 1 | SPEAKER | PinHeader_1x02_P2.54mm_Vertical | J303 |
| 4 | IM41 | im41_smd_relay | K301, K302, K303, K304 |
| 1 | PWR/M | SW_SPST_PTS645_Button | SW101 |
| 1 | GB | SW_SPST_PTS645_Button | SW201 |
| 1 | + | SW_SPST_PTS645_Button | SW202 |
Show 43 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PIN | SW_SPST_PTS645_Button | SW203 |
| 1 | - | SW_SPST_PTS645_Button | SW204 |
| 2 | CSTNE8M00G55Z000R0 8MHz | Crystal_SMD_3PADS_8MHZ | Z201, Z202 |
| 1 | BAT54C | SOT-23 | D101 |
| 2 | BAT760 | D_SOD-323_HandSoldering | D102, D104 |
| 1 | S1M | D_SMA | D103 |
| 2 | LED | C_0603_1608Metric | D201, D210 |
| 1 | NR3015T1R5N 1.5uH | Inductor_NR3015 | L101 |
| 7 | LCB1206-151 | C_0603_1608Metric | L102, L103, L104, L105, L106, L201, L202 |
| 21 | 100n | C_0603_1608Metric | C101, C103, C105, C201, C202, C203, C204, C205 +13 |
| 4 | 100u | CP_EIA-3528-21_Kemet-B | C102, C104, C106, C108 |
| 2 | 470u | CP_EIA-7343-31_Kemet-D | C107, C110 |
| 4 | 10u | C_0603_1608Metric | C109, C112, C220, C321 |
| 12 | 1u | C_0603_1608Metric | C217, C221, C222, C223, C224, C225, C226, C228 +4 |
| 1 | 47n | C_0603_1608Metric | C301 |
| 2 | 100n | C_1206_3216Metric | C302, C325 |
| 1 | 680p | C_0603_1608Metric | C305 |
| 1 | 33n | C_0603_1608Metric | C310 |
| 1 | 100p | C_0603_1608Metric | C311 |
| 1 | 1u | C_1206_3216Metric | C312 |
| 1 | 220p | C_0603_1608Metric | C314 |
| 1 | 470p | C_0603_1608Metric | C315 |
| 1 | 10n | C_0603_1608Metric | C323 |
| 2 | 33n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C350, C352 |
| 1 | 4n7 | C_Disc_D4.3mm_W1.9mm_P5.00mm | C351 |
| 1 | 2n2 | C_Disc_D4.3mm_W1.9mm_P5.00mm | C353 |
| 1 | 150n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C354 |
| 1 | 10n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C355 |
| 4 | 100n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C356, C357, C358, C359 |
| 12 | 10k | C_0603_1608Metric | R101, R106, R107, R108, R213, R220, R301, R310 +4 |
| 1 | 3 | C_0603_1608Metric | R102 |
| 1 | 3k3 | C_0603_1608Metric | R103 |
| 1 | 51k | C_0603_1608Metric | R104 |
| 3 | 100k | C_0603_1608Metric | R105, R201, R210 |
| 3 | 4k7 | C_0603_1608Metric | R202, R211, R212 |
| 1 | 100 | C_0603_1608Metric | R221 |
| 1 | 1k | C_0603_1608Metric | R222 |
| 1 | 51 | C_0603_1608Metric | R302 |
| 1 | 68k | C_0603_1608Metric | R303 |
| 2 | 12k | C_0603_1608Metric | R304, R305 |
| 3 | 4.7 | C_0603_1608Metric | R306, R323, R324 |
| 1 | 47 | C_0603_1608Metric | R311 |
| 1 | 240 | C_0603_1608Metric | R321 |
Hubble metal detector design files
The KiCad project lives in the zartarn15/hubble-metal-detector repository on GitHub; these links point at the commit this page was built from.
Hubble metal detector: common questions
What microcontroller does the Hubble metal detector use?
The Hubble metal detector is built around the STM32F103RB, from the STM32 family.
How big is the Hubble metal detector PCB?
The Hubble metal detector measures 80 × 74 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Hubble metal detector?
140 components, from 63 distinct parts. The full bill of materials is listed on this page.
Where can I download the Hubble metal detector design files?
From the zartarn15/hubble-metal-detector repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Hubble metal detector design in my own project?
The repository has no license, so all rights stay with zartarn15. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Hubble metal detector without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
Similar boards
STM32LumenPnP Motherboard
opulo-inc
149 × 95 mm296 parts4LCC-BY-SA-4.03.7k
STM32AxxSolder
AxxAxx
39 × 82.5 mm122 parts2LGPL-3.01.7k
STM32LibreVNA
jankae
122 × 98 mm592 parts6LGPL-3.01.6k
STM32AIOC
skuep
21 × 31.5 mm47 parts2LMIT1.4k
STM32Ferris
pierrechevalier83
208.8 × 86.8 mm102 parts2LSHL-2.11.3k
STM32176 pin board
rusefi
61.8 × 73.2 mm76 parts2LGPL-3.01.2k