2 layers32 × 76.1 mm
DPicoTracker
Mineinjava/ffellowship
Frequency Fellowship: Examining Radio Wave Propagation from a High Altitude Balloon
49 parts1
2 layers
DPicoTracker
Mineinjava/ffellowship1Frequency Fellowship: Examining Radio Wave Propagation from a High Altitude Balloon
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 72
- Pads
- 140
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 May 2025
- Updated
- 21 Jun 2025
Overview
DPicoTracker is an open-source printed circuit board by Mineinjava, from the Mineinjava/ffellowship repository on GitHub. It is a 2-layer board with 23 parts on 72 nets.
It is built around the RP2040, TPS61221DCK and W25Q128JVSIQ, with the CJ431 and ABM8-272-T3 among its other parts. Its parts include 7 capacitors, 6 resistors, 6 ICs, 2 connectors and 1 inductor. It belongs with the radio and wireless boards and the RP2040 boards of this library.
Main components
5
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
TPS61221DCK
SC-70-6-40℃~+125℃@(TJ) 1 200mA 3.3V 5.5uA 700mV~5.5V Boost Boost Built-in Fixed Yes SC-70-6 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
CJ431
SOT-89-3-25℃~+85℃@(Ta) 100mA 1mA 2.5V~36V 50ppm/℃ Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHSJiangsu Changjing Electronics Technology (CJ)Voltage Reference
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
README
direwolfTracker/README.mdDirewolf-powered Tracker
This tracker uses direwolf to communicate with an external radio like a HT.
BOM:
| Id | Designator | Footprint | Quantity | Designation | Supplier and ref |
|---|---|---|---|---|---|
| 1 | C2, C1, C3 | C_1206_3216Metric | 3 | 10µF | C13585 |
| 3 | Q1 | Q_SOT-23 | 1 | MMBT2222A | C82460 |
| 4 | C20, C19, C21 | C_1206_3216Metric | 3 | 100nF | C82460 |
| 7 | U1 | Texas_R-PDSO-G6 | 1 | TPS61222DCK | C116461 |
| 9 | R1 | R_1206_3216Metric | 1 | 10kΩ | C132649 |
| 10 | R3 | R_1206_3216Metric | 1 | 2.7kΩ | C2930416 |
| 12 | IC1 | ATGM336H5N31 | 1 | ATGM336H-5N31 | C2940946 |
| 13 | R2 | R_1206_3216Metric | 1 | 100kΩ | C2930416 |
| 14 | U2 | DIP-8_W7.62mm | 1 | ICM7555xP | C22461592 |
| 15 | R4 | R_1206_3216Metric | 1 | 1MΩ | C108083 |
| 16 | L1 | L_1206_3216Metric | 1 | 4.7µH | C13585 |
Additionally:
- 1 Raspberry Pi Zero
- 1 GPS Antenna
- 1 micro usb sound card
- 1 TRRS 3.5mm cable
- 1 TRS 3.5mm cable
- 1 TRS 2.5mm cable
- 1 external radio
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10µF | PCM_JLCPCB:C_1206 | C3, C4, C5 |
| 2 | 15pF | PCM_JLCPCB:C_1206 | C2, C6 |
| 2 | 1kΩ | PCM_JLCPCB:R_1206 | R3, R4 |
| 2 | 5.1kΩ | PCM_JLCPCB:R_1206 | R1, R2 |
| 2 | CJ431 | PCM_JLCPCB:SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | U3, U4 |
| 1 | 100kΩ | PCM_JLCPCB:R_1206 | R6 |
| 1 | 100nF | PCM_JLCPCB:C_1206 | C1 |
| 1 | 1nF | PCM_JLCPCB:C_1206 | C7 |
| 1 | 200kΩ | PCM_JLCPCB:R_1206 | R5 |
| 1 | 4.7µH | PCM_JLCPCB:L_1206 | L1 |
| 1 | ABM8-272-T3 | footprints:ABM8-272-T3_ABR | X1 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J1 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U1 |
| 1 | TPS61221DCK | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_XKB_U262-16XN-4BVC11 | P1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U6 |
Questions
What parts does the DPicoTracker use?
23 parts, built around the RP2040, TPS61221DCK, W25Q128JVSIQ and CJ431. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the DPicoTracker KiCad files?
From the Mineinjava/ffellowship repository on GitHub, at the commit this page was made from: the board is Bare_PICO_PCBA_UNUSED/dPicoTracker.kicad_pcb and its schematic Bare_PICO_PCBA_UNUSED/dPicoTracker.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DPicoTracker design in my own project?
Its repository states no licence, so its author keeps all rights: ask Mineinjava before reusing the design.
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