

E Fidget V3
Hi there! There's a lot of moving parts with this project right now, so why don't you check out my latest blog post for more info?
- Size
- 54.1 × 48.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 32
- Pads
- 110
- Tracks, vias
- 329, 51
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 16 Aug 2022
- Updated
- 27 Aug 2023
Overview
E Fidget V3 is an open-source printed circuit board by miameows, from the miameows/E-Fidget repository on GitHub, published under the MIT licence. It is a 2-layer board of 54.1 × 48.6 mm with 29 parts on 32 nets, routed with 329 tracks and 51 vias.
It is built around the ATTINY841-MMH, BAT54J and DMG2302U, with the WAFER-PH2.0-2PWB and WS2812B among its other parts. Its parts include 7 resistors, 5 diodes, 3 capacitors, 3 ICs and 3 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5ATTINY841-MMH
VQFN-20-EP(3x3)-40℃~+85℃ 1.7V~5.5V 10bit 12 16MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer、Programmable watchdog VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)BAT54J
SOD-323F1 Independent 200mA 2uA@25V 30V 600mA 800mV@100mA SOD-323F Schottky Diodes ROHSNexperiaSchottky DiodesDMG2302U
SOT-23-55℃~+150℃ 1 N-channel 120mΩ@4.5V 1V 20V 4.2A 57.7pF 594.3pF 64.5pF 7nC@4.5V 800mW SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETsWAFER-PH2.0-2PWB
SMD,P=2mm,卧贴-25℃~+85℃ 1 1x2P 2 250V 2A 2P 2mm 5.6mm 7.59mm 8mm Auxiliary Solder Pin Beige Brass LCP PH Surface Mount, Right Angle Tin SMD,P=2mm,卧贴 Wire To Board Connector ROHSXUNPUWire To Board ConnectorWS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
README
README.mdE-Fidget
Hi there! There's a lot of moving parts with this project right now, so why don't you check out my latest blog post for more info?
Thanks :)
- Micha
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R5, R6, R7 |
| 3 | BAT54J | Diode_SMD:D_SOD-323F | D3, D4, D5 |
| 3 | DMG2302U | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 3 | Motor_DC | Connector_Wire:SolderWire-0.1sqmm_1x02_P3.6mm_D0.4mm_OD1mm | M1, M2, M3 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm | SW1, SW2 |
| 1 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 10u | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | ATtiny841-MM | Package_DFN_QFN:QFN-20-1EP_3x3mm_P0.45mm_EP1.6x1.6mm | U3 |
| 1 | Conn_02x03_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | ORANGE | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | TC1185-xCT | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4135-GF-A_6P_TopMnt_Horizontal | J1 |
| 1 | WAFER-PH2.0-2PWB | Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | BT1 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D2 |
Questions
How big is the E Fidget V3 PCB?
It measures 54.1 × 48.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the E Fidget V3 use?
29 parts, built around the ATTINY841-MMH, BAT54J, DMG2302U and WAFER-PH2.0-2PWB. 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 E Fidget V3 KiCad files?
From the miameows/E-Fidget repository on GitHub, at the commit this page was made from: the board is Hardware/E-Fidget V3.kicad_pcb and its schematic Hardware/E-Fidget V3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the E Fidget V3 design in my own project?
Its repository publishes it under the MIT 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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