Lumber plunder metal detector
bobasaurus·lumber-plunder-metal-detector·kicad/metal detector test/metal detector test.kicad_pcb
About the Lumber plunder metal detector PCB
Lumber plunder metal detector is an open source PCB design by bobasaurus, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 82.8 × 88.9 mm, with 100 components from 61 distinct parts.
Other key parts include the OPA2140AID, NUCLEO-F303K8, LM2940IMP-9.0/NOPB, UA78M05CDCYRG3 and LT1129CST-3.3#PBF. By type, the board carries 31 capacitors, 21 resistors, 12 ICs, 10 switches, 6 jumpers and 2 transistors.
It belongs with the sensors and displays & leds designs in this gallery.
From the project
A VLF induction balance metal detector with a wooden body
A VLF induction balance metal detector with a wooden body. Previously built with an android smartphone, currently switching to a STM32 Nucleo module and OLED display on a custom PCB.
This project is influenced by and tries to improve upon similar DIY metal detectors, including the following: Neco Smart Hunter EN: https://neco-desarrollo.es/smart-hunter The vistac2000 pc-based metal detector with usb interface: https://www.geotech1.com/forums/showthread.php?14102-Let-s-made-a-PC-base-metal-detector-with-usb-interface-!!! The TGSL (for the coil design)…

Main components on the Lumber plunder metal detector
Lumber plunder metal detector bill of materials (BOM)
100 components, 61 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | OPA2140AID op amp (higher voltage) | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | NUCLEO-F303K8 nucleo-32 uC module | Nucleo-32_allen | U2 |
| 1 | LM2940IMP-9.0/NOPB 9v lin reg | SOT-223-3_TabPin2 | U3 |
| 2 | UA78M05CDCYRG3 5v lin reg | SOT-223-3_TabPin2 | U4, U9 |
| 2 | LT1129CST-3.3#PBF 3.3v lin reg | SOT-223-3_TabPin2 | U5, U10 |
| 1 | LM4752TS audio amp | TO-263-7_TabPin4 | U6 |
| 2 | MAX7423EUA+ lp filter | TSSOP-8_4.4x3mm_P0.65mm | U7, U11 |
| 1 | LS20-S switch debounce | SOIC-20W_7.5x12.8mm_P1.27mm | U8 |
| 1 | OPA2320AID op amp (lower voltage) | SOIC-8_3.9x4.9mm_P1.27mm | U12 |
| 1 | 2SA2071T100Q PNP | SOT-89-3_Handsoldering_allen | Q1 |
| 1 | 2SC5824T100Q NPN | SOT-89-3_Handsoldering_allen | Q2 |
| 1 | SJ-3524-SMT 3.5mm audio jack TRS | SJ-3524-SMT_audio_jack_with_tip_switch_smt | J1 |
| 1 | 106990288 12V (18650 x3) | PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 5 | Strain Rel | mounting_hole_3mm | H1, H2, H3, H4, H5 |
| 4 | MountingHole | mounting_hole_4-40_thru | H6, H7, H8, H9 |
| 1 | SOLDERJUMPER_2_OPEN SolderJumper_2_Open_big | SolderJumper-2_Open_big_allen | JP1 |
| 3 | SOLDERJUMPER_2_OPEN SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP2, JP3, JP4 |
| 2 | SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP5, JP6 |
| 1 | Ext. Speaker | PinHeader_1x02_P2.54mm_Vertical | LS1 |
| 1 | CDS-13138-SMT-TR SMT Speaker | CDS-13138-SMT-TR_speaker_smt | LS2 |
Show 41 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 6m1 | PinHeader_1x02_P2.54mm_Vertical | L_RX1 |
| 2 | 5m6 | PinHeader_1x02_P2.54mm_Vertical | L_TX1, L_TX2 |
| 9 | PTS 647 SN50 SMTR2 LFS SW_SPST | SW_SPST_PTS647 | SW0, SW1, SW2, SW3, SW4, SW5, SW6, SW7 +1 |
| 1 | A11AH SW_SPST | A11AH_right_angle_toggle_switch | SW10 |
| 1 | B09LND6QJ1 2.42_inch_128x64_oled | oled_2.42in_128x64 | DS1 |
| 1 | HZ0805E601R-10 ferrite bead smt | L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB1 |
| 1 | 100U 100u | C_Polarized_1206_3216Metric_HandSolder_allen | C1 |
| 1 | 470N 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 22U 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 100N 33n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 100N 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 1 | 100N 470n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6 |
| 1 | 33N 22u | C_Polarized_1206_3216Metric_HandSolder_allen | C7 |
| 1 | 10N .33u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 1 | 100N 3.3u | C_Polarized_0805_2012Metric_HandSolder_allen | C10 |
| 3 | A750MV108M1EAAE014 1000u | CP_Radial_D10.0mm_P5.00mm | C11, C16, C24 |
| 1 | 10U 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12 |
| 1 | 100N 10u | C_Polarized_1206_3216Metric_HandSolder_allen | C13 |
| 7 | 100N 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C14, C18, C20, C23, C27, C29, C30 |
| 2 | A750MV108M1EAAE014 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15, C22 |
| 1 | 100U 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17 |
| 1 | .33u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C19 |
| 1 | 3.3U 3.3u | C_Polarized_0805_2012Metric_HandSolder_allen | C21 |
| 1 | A750MV108M1EAAE014 33n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C25 |
| 1 | 33N 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C26 |
| 1 | 100N 100u | C_Polarized_1206_3216Metric_HandSolder_allen | C28 |
| 1 | 3.3u | C_Polarized_0805_2012Metric_HandSolder_allen | C31 |
| 1 | 27K 27k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 1.2K 1.2k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 560 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 2 | 18K 18k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R8 |
| 5 | 100K 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R7, R19, R20 |
| 1 | 12K 12k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 33K 33k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10 |
| 1 | 2k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11 |
| 1 | 10K 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12 |
| 2 | 2.7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R16 |
| 2 | 49.9K 49.9k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14, R18 |
| 2 | 5K1 5k1 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15, R17 |
| 1 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21 |
Lumber plunder metal detector design files
The KiCad project lives in the bobasaurus/lumber-plunder-metal-detector repository on GitHub; these links point at the commit this page was built from.
Lumber plunder metal detector: common questions
How big is the Lumber plunder metal detector PCB?
The Lumber plunder metal detector measures 82.8 × 88.9 mm, has 4 copper layers and is 1.69 mm thick.
How many components are on the Lumber plunder metal detector?
100 components, from 61 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 Lumber plunder metal detector design files?
From the bobasaurus/lumber-plunder-metal-detector 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 Lumber plunder metal detector design in my own project?
Yes, under the terms of its GPL-3.0 license, which bobasaurus chose for the repository.
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