2 layers85 × 17 mm
2 layers47.8 × 33.6 mm
Ee ele-250
deffener/psychic-barnacleRandomly named repository for ee.ele.250 :)
- Size
- 47.8 × 33.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 33
- Pads
- 108
- Tracks, vias
- 156, 20
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 1 Nov 2025
- Updated
- 7 Dec 2025
Overview
Ee ele-250 is an open-source printed circuit board by deffener, from the deffener/psychic-barnacle repository on GitHub. It is a 2-layer board of 47.8 × 33.6 mm with 31 parts on 33 nets, routed with 156 tracks and 20 vias.
It is built around the ATMEGA328P-MU and 9C-16.000MEEJ-T. Its parts include 8 capacitors, 6 resistors, 3 connectors, 2 ICs and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA328P-MU
HVQFN-32(5x5)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH VQFN-32(5x5) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontroller Units (MCUs/MPUs/SOCs)
9C-16.000MEEJ-T
HC-49S-SMD-20℃~+70℃ 16MHz 18pF 30Ω ±10ppm ±10ppm HC-49S-SMD Crystals ROHSTXC CorpCrystals
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5 |
| 3 | Fiducial | Fiducial:Fiducial_0.5mm_Mask1mm | FID1, FID2, FID3 |
| 3 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R5 |
| 2 | 22p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6, C7 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 10k | Potentiometer_SMD:Potentiometer_ACP_CA9-VSMD_Vertical | R4 |
| 1 | 1N4007 | Diode_SMD:D_SOD-123F | D2 |
| 1 | 22n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8 |
| 1 | 270R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 9C-16.000MEEJ-T | Crystal:Crystal_SMD_ECS_CSM3X-2Pin_7.6x4.1mm | XTAL1 |
| 1 | ATmega328P-M | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm | U2 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Kycon_KLDX-0202-xC_Horizontal | J3 |
| 1 | ISP | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220F-3_Vertical | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | SW_SPST | Button_Switch_SMD:Nidec_Copal_CAS-120A | SW2 |
| 1 | Speaker | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | LS1 |
| 1 | UART | Connector_PinHeader_2.00mm:PinHeader_2x02_P2.00mm_Vertical | J2 |
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Questions
How big is the Ee ele-250 PCB?
It measures 47.8 × 33.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ee ele-250 use?
31 parts, built around the ATMEGA328P-MU and 9C-16.000MEEJ-T. 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 Ee ele-250 KiCad files?
From the deffener/psychic-barnacle repository on GitHub, at the commit this page was made from: the board is ee-ele-250.kicad_pcb and its schematic ee-ele-250.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ee ele-250 design in my own project?
Its repository states no licence, so its author keeps all rights: ask deffener before reusing the design.