4 layers38.4 × 128.5 mm
2 layers25.5 × 23 mm
Yumbuddy
marrowbuster/yumbuddy2tiny lil' esp32-c6 based wireless development board designed for the flipper zero. only takes up one set of gpio pins!
- Size
- 25.5 × 23 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 44
- Pads
- 140
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 May 2025
- Updated
- 8 Aug 2025
Overview
Yumbuddy is an open-source printed circuit board by marrowbuster, from the marrowbuster/yumbuddy repository on GitHub. It is a 2-layer board of 25.5 × 23 mm with 35 parts on 44 nets.
It is built around the ESP32-C6FH4. Its parts include 14 capacitors, 10 resistors, 3 inductors, 2 ICs and 2 switches. It belongs with the ESP32 and RISC-V boards of this library.
Main components
1README
README.mdyumbuddy
tiny lil' esp32-c6 based wireless development board designed for the flipper zero. only takes up one set of gpio pins!
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100nF | Resistor_SMD:R_0603_1608Metric | C3, C4, C7, C10 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R7 |
| 3 | 1uF | Resistor_SMD:R_0603_1608Metric | C5, C8, C13 |
| 3 | 5.1k | Resistor_SMD:R_0603_1608Metric | R5, R6, R10 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric | R4, R8 |
| 2 | 6pF | Resistor_SMD:R_0603_1608Metric | C1, C2 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW3, SW4 |
| 1 | 1.5k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 10nF | Resistor_SMD:R_0603_1608Metric | C14 |
| 1 | 10uF | Resistor_SMD:R_0603_1608Metric | C6 |
| 1 | 15pF | Resistor_SMD:R_0603_1608Metric | C9 |
| 1 | 2.2pF | Resistor_SMD:R_0603_1608Metric | C12 |
| 1 | 2.4pF | Resistor_SMD:R_0603_1608Metric | C11 |
| 1 | 24nH | Inductor_SMD:L_0603_1608Metric | L3 |
| 1 | 2nH | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 3nH | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 40MHz(+/-10ppm) | Crystal:Crystal_SMD_1210-4Pin_1.2x1.0mm | Y1 |
| 1 | 499 | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | ESP32-C6FH4 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.6x3.6mm | U1 |
| 1 | Green | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_Amphenol_124019772112A | P1 |
| 1 | ~ | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Horizontal | U2 |
| 1 | ~ | RF_Antenna:Johanson_2450AT43F0100 | ACAG0301-5500-T1 |
Questions
How big is the Yumbuddy PCB?
It measures 25.5 × 23 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Yumbuddy use?
35 parts, built around the ESP32-C6FH4. 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 Yumbuddy KiCad files?
From the marrowbuster/yumbuddy repository on GitHub, at the commit this page was made from: the board is yumbuddy.kicad_pcb and its schematic yumbuddy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Yumbuddy design in my own project?
Its repository states no licence, so its author keeps all rights: ask marrowbuster before reusing the design.
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