2 layers23.3 × 18.8 mm
BME280Breakout
mpkendall/Tiny4FSK-Ecosystem
Set of expansion boards, sensor breakouts, and additional modules to operate with the Tiny4FSK tracking system.
17 parts3GPL-3.0
4 layers27.9 × 63.9 mm
Tiny4FSKGeneralShield
mpkendall/Tiny4FSK-Ecosystem3Set of expansion boards, sensor breakouts, and additional modules to operate with the Tiny4FSK tracking system.
- Size
- 27.9 × 63.9 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 38
- Pads
- 223
- Tracks, vias
- 475, 86
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Apr 2025
- Updated
- 23 Mar 2026
Overview
Tiny4FSKGeneralShield is an open-source printed circuit board by mpkendall, from the mpkendall/Tiny4FSK-Ecosystem repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 27.9 × 63.9 mm with 35 parts on 38 nets, routed with 475 tracks and 86 vias.
It is built around the FXMA108BQX and TPS63060DSC. Its parts include 15 connectors, 8 resistors, 7 capacitors, 2 ICs and 1 inductor. It belongs with the sensors and measurement boards of this library.
Main components
2README
README.mdTiny4FSK Ecosystem
A set of additional features, tools, and boards to expand functionality of Tiny4FSK
TinyShield
TinyShield is an expansion board which sits atop of Tiny4FSK's expansion pins. It adds:
- An OLED screen for basic flight diagnostics,
- SD card for logging,
- 5v logic headers for more sensors,
- Integrated buck/boost for wider range of power sources, including a LiPo connector,
- Qwiic headers for adding more sensors!
Code in the Tiny4FSK repository already implements automatic sensor, SD card, and screen scanning and initialization. Functions pertaining to these features are configurable in both config.h and the main Tiny4FSK.ino file.
To get started, solder female headers to the 2.54mm pins on the back side of the shield. To interface with the Tiny4FSK board, additionally solder 2.54mm male header rows to the USB, power, and data headers on the Tiny4FSK. Mounting them for alignment may assist with soldering.
Insert the shield board onto the Tiny4FSK's headers as shown. No code changes are required to continue with SD card logging and screen initialization.
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 22uF | Capacitor_SMD:C_0603_1608Metric | C7, C8, C9 |
| 2 | 10uF | Capacitor_SMD:C_0402_1005Metric | C5, C6 |
| 2 | 1kR | Resistor_SMD:R_0402_1005Metric | R3, R5 |
| 2 | 2kR | Resistor_SMD:R_0402_1005Metric | R4, R6 |
| 2 | 5.1kR | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 10pF | Capacitor_SMD:C_0402_1005Metric | C4 |
| 1 | 111kR | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 1uH | Inductor_Extended:IND_SRP4020FA-1R0M | L1 |
| 1 | 3v3 IO | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J16 |
| 1 | 5V IO | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J17 |
| 1 | Ext.BME280 | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J5 |
| 1 | Ext.IMU | Connector_JST:JST_SH_SM06B-SRSS-TB_1x06-1MP_P1.00mm_Horizontal | J10 |
| 1 | Ext.Photo | Connector_JST:JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_Horizontal | J11 |
| 1 | Ext.Pwr | Connector_JSt_Extended:HX20007-2AWB | J9 |
| 1 | FXMA108 | Package_DFN_QFN:WQFN-20-1EP_2.5x4.5mm_P0.5mm_EP1x2.9mm | U1 |
| 1 | Int.OLED | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J12 |
| 1 | Int.Pwr | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J15 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Hirose_DM3D-SF | J1 |
| 1 | TPS63060 | Package_SON:Texas_S-PWSON-N10_ThermalVias | U3 |
| 1 | TinyGPIO | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J4 |
| 1 | TinyI2C | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | TinyPwr | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J7 |
| 1 | TinySPI | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J6 |
| 1 | TinyUSB | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J8 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
Questions
How big is the Tiny4FSKGeneralShield PCB?
It measures 27.9 × 63.9 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Tiny4FSKGeneralShield use?
35 parts, built around the FXMA108BQX and TPS63060DSC. 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 Tiny4FSKGeneralShield KiCad files?
From the mpkendall/Tiny4FSK-Ecosystem repository on GitHub, at the commit this page was made from: the board is Tiny4FSKGeneralShield/Tiny4FSKGeneralShield.kicad_pcb and its schematic BreakoutBoards/BME280Breakout/BME280Breakout.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tiny4FSKGeneralShield design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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Set of expansion boards, sensor breakouts, and additional modules to operate with the Tiny4FSK tracking system.
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