Explorer
About the Explorer PCB
Explorer is an open source STM32 PCB design by anyshake, published on GitHub under the Custom license license. It is a 2-layer board measuring 100 × 100 mm, with 244 components from 76 distinct parts.
Its main chip is the STM32F103C8TX, from the STM32 family. Other key parts include the TPS5430DDA, LP2985-2.5, MP2236GJ, TPS72325DBV and AMS1117-3.3. By type, the board carries 92 resistors, 84 capacitors, 24 diodes, 20 ICs, 9 connectors and 5 switches.
It belongs with the sensors, test & measurement and science & space designs in this gallery.
From the project
🌏 Detecting seismic wave using 3 geophones and 3-axis accelerometer, pack & send data to AnyShake Observer over RS232 / RS485 serial.
Please make sure the KiCAD version is at least 9.0.0 or above.
Clone this repository to your local machine with --depth=1 option to reduce download size.
If you don't have git installed, you can download the source code as a .zip or .tar.gz archive, extract it and cd into the directory. However, you will not be able to update the source code with git pull.
- github.com/anyshake/explorer/archive/refs/heads/master.zip - github.com/anyshake/explorer/archive/refs/heads/master.tar.gz
Main components on the Explorer
Explorer bill of materials (BOM)
244 components, 76 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS5430DDA | TI_SO-PowerPAD-8_ThermalVias | U1 |
| 1 | LP2985-2.5 | SOT-23-5 | U2 |
| 1 | MP2236GJ | TSOT-23-8 | U3 |
| 1 | TPS72325DBV | SOT-23-5 | U4 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U5 |
| 1 | AT24CS08-SSHM | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | SSD1306 | SSD1306 | U7 |
| 1 | NEO-M8M | ublox_NEO | U8 |
| 1 | 74HC14 | SO-14_3.9x8.65mm_P1.27mm | U9 |
| 1 | MAX3485 | SOIC-8_3.9x4.9mm_P1.27mm | U10 |
| 1 | STM32F103C8TX STM32F103C8Tx | LQFP-48_7x7mm_P0.5mm | U11 |
| 1 | ADM3202ARN | SOIC-16_3.9x9.9mm_P1.27mm | U12 |
| 6 | ADA4528-2ARMZ | MSOP-8_3x3mm_P0.65mm | U13, U14, U15, U17, U18, U19 |
| 1 | LSM6DSR | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U16 |
| 1 | ADS1262IPWR | TSSOP-28_4.4x9.7mm_P0.65mm | U20 |
| 1 | SG-8002CA 8M-PCML0 | Oscillator_SMD_SeikoEpson_SG8002CA-4Pin_7.0x5.0mm | Y1 |
| 1 | DC_IN | BarrelJack_Horizontal | J1 |
| 1 | BOOT | PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | SMA | SMA_Amphenol_901-144_Vertical | J3 |
| 1 | RS485 | TerminalBlock_bornier-2_P5.08mm | J4 |
Show 56 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STLINK | PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | TTL | PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | LGT-4.5C | TerminalBlock_bornier-2_P5.08mm | J9 |
| 2 | LGT-4.5C/H | TerminalBlock_bornier-2_P5.08mm | J10, J11 |
| 1 | DMS3R3 | BatteryHolder_Seiko_MS621F | BT1 |
| 1 | JUMPER_A+2V5 | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | JUMPER_A-2V5 | PinHeader_1x02_P2.54mm_Vertical | JP2 |
| 1 | JUMPER_D+3V3 | PinHeader_1x02_P2.54mm_Vertical | JP3 |
| 1 | POWER | SW_Push_2P2T_Toggle_CK_PVA2OAH5xxxxxxV2 | SW1 |
| 1 | RESET | SW_PUSH_6mm | SW2 |
| 1 | SAMPLERATE | SW_DIP_SPSTx02_Slide_6.7x6.64mm_W8.61mm_P2.54mm_LowProfile | SW3 |
| 1 | OPTIONS | SW_DIP_SPSTx03_Slide_6.7x9.18mm_W8.61mm_P2.54mm_LowProfile | SW4 |
| 1 | BAUDRATE | SW_DIP_SPSTx02_Slide_6.7x6.64mm_W8.61mm_P2.54mm_LowProfile | SW5 |
| 3 | SS34 | D_SMA | D1, D3, D7 |
| 1 | SMAJ12A | D_SMA | D2 |
| 7 | Yellow | LED_0603_1608Metric | D4, D5, D6, D11, D12, D13, D23 |
| 2 | SMAJ5.0CA | D_SMA | D8, D10 |
| 4 | 1N4148W | D_SOD-123 | D9, D14, D15, D16 |
| 4 | SMAJ15CA | D_SMA | D17, D18, D19, D20 |
| 3 | MMBD1503A | SOT-23 | D21, D22, D24 |
| 1 | 22UH 22uH | L_Abracon_ASPI-0630LR | L1 |
| 2 | 1UH 1uH | L_1210_3225Metric | L2, L4 |
| 1 | 4.7UH 4.7uH | L_Abracon_ASPI-0630LR | L3 |
| 1 | 1UH 1uH | L_0603_1608Metric | L5 |
| 2 | 4.7UF 4.7uF | CP_EIA-3528-12_Kemet-T | C1, C14 |
| 5 | 1UF 1uF | CP_EIA-3528-12_Kemet-T | C2, C9, C10, C12, C22 |
| 2 | 10UF 10uF | CP_EIA-3528-12_Kemet-T | C3, C25 |
| 33 | 0.1UF 0.1uF | C_0603_1608Metric | C4, C15, C16, C17, C19, C26, C27, C29 +25 |
| 3 | 0.01UF 0.01uF | C_0603_1608Metric | C5, C11, C36 |
| 8 | 22UF 22uF | CP_EIA-3528-12_Kemet-T | C6, C8, C13, C18, C20, C21, C23, C28 |
| 1 | 220UF 220uF | CP_Elec_6.3x7.7 | C7 |
| 1 | 220PF 220pF | C_0603_1608Metric | C24 |
| 2 | 100PF 100pF | C_0603_1608Metric | C31, C33 |
| 12 | 4.7UF 4.7uF | C_1210_3225Metric | C48, C49, C50, C51, C52, C53, C57, C58 +4 |
| 6 | 22PF 22pF | C_0603_1608Metric | C54, C55, C56, C64, C65, C66 |
| 8 | 1UF 1uF | C_1210_3225Metric | C67, C68, C69, C70, C71, C72, C80, C83 |
| 1 | 4700PF 4700pF | C_0603_1608Metric | C77 |
| 1 | 330K 330k | R_0603_1608Metric | R1 |
| 1 | 510K 510k | R_0603_1608Metric | R2 |
| 19 | 10K 10k | R_0603_1608Metric | R3, R13, R16, R17, R20, R23, R27, R28 +11 |
| 1 | 3.3K 3.3k | R_0603_1608Metric | R4 |
| 2 | 10 | R_0603_1608Metric | R5, R22 |
| 6 | 1k | R_0603_1608Metric | R6, R12, R24, R25, R26, R88 |
| 1 | 100K 100k | R_0603_1608Metric | R7 |
| 1 | 12K 12k | R_0603_1608Metric | R8 |
| 1 | 680 | R_0603_1608Metric | R9 |
| 10 | 0 | R_0603_1608Metric | R10, R11, R18, R19, R89, R90, R91, R92 +2 |
| 3 | 4.7K 4.7k | R_0603_1608Metric | R14, R15, R39 |
| 1 | 120 | R_0603_1608Metric | R21 |
| 12 | 43K 43k | R_0603_1608Metric | R34, R35, R36, R40, R41, R42, R49, R50 +4 |
| 12 | 5.9K 5.9k | R_0603_1608Metric | R46, R47, R48, R61, R62, R63, R64, R65 +4 |
| 3 | 82K 82k | R_0603_1608Metric | R52, R53, R54 |
| 3 | 5.6K 5.6k | R_0603_1608Metric | R67, R70, R73 |
| 6 | 110K 110k | R_0603_1608Metric | R68, R71, R74, R76, R77, R78 |
| 3 | 30K 30k | R_0603_1608Metric | R69, R72, R75 |
| 6 | 2k | R_0603_1608Metric | R82, R83, R84, R85, R86, R87 |
Explorer design files
The KiCad project lives in the anyshake/explorer repository on GitHub; these links point at the commit this page was built from.
Explorer: common questions
What microcontroller does the Explorer use?
The Explorer is built around the STM32F103C8TX, from the STM32 family.
How big is the Explorer PCB?
The Explorer measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Explorer?
244 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 Explorer design files?
From the anyshake/explorer 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 Explorer design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Explorer 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.
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