
ButterStick
butterstick-fpga/butterstick-hardware
Basic ECP5 based GigE to SYZYGY interface.

ATMEL Stepper Motor Controller Board prototype for the Cobra Air Brakes test rocket
Stepper Controller is an open-source printed circuit board by Case-Rocket-Team, from the Case-Rocket-Team/StepperMotorControllerBoard repository on GitHub. It is a 2-layer board of 39 × 39.4 mm with 44 parts on 37 nets, routed with 467 tracks and 3 vias.
It is built around the ATMEGA328PB-MU and BSS138. Its parts include 16 resistors, 8 capacitors, 5 connectors, 4 transistors and 2 ICs. It belongs with the robots and motor control boards and the AVR (ATmega, ATtiny) boards of this library.
"# StepperDriver" "# StepperMotorControllerBoard"
| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17 |
| 4 | BSS138 | digikey-footprints:SOT-23-3 | Q1, Q2, Q3, Q4 |
| 3 | 0.1uF | Capacitor_SMD:C_0201_0603Metric | C4, C5, C6 |
| 2 | 22pf | Capacitor_SMD:C_0201_0603Metric | C2, C3 |
| 2 | MountingHole_3.2mm_M3_ISO7380_Pad | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad | REF1, REF2 |
| 1 | .1uF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | .33uF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 100uf | Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm | C7 |
| 1 | 16 MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | ATmega328PB-MU | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm | U1 |
| 1 | ENCODER | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | ICSP | Connector_PinSocket_2.54mm:PinSocket_2x03_P2.54mm_Vertical | J4 |
| 1 | L78L05_SO8 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LIMIT_SWITCH | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | MAIN_CONNECTOR | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J5 |
| 1 | PWR | LED_SMD:LED_0603_1608Metric | PWR |
| 1 | Pololu_Breakout_DRV8825 | Module:Pololu_Breakout-16_15.2x20.3mm | A1 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_FSMSM | RST |
| 1 | STALL | LED_SMD:LED_0603_1608Metric | STALL |
| 1 | STATUS | LED_SMD:LED_0603_1608Metric | STATUS |
| 1 | Stepper | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6 |
| 1 | UART | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | UART |
It measures 39 × 39.4 mm and has 2 copper layers, 1.6 mm thick.
44 parts, built around the ATMEGA328PB-MU and BSS138. 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.
From the Case-Rocket-Team/StepperMotorControllerBoard repository on GitHub, at the commit this page was made from: the board is Stepper Controller.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Case-Rocket-Team before reusing the design.

butterstick-fpga/butterstick-hardware
Basic ECP5 based GigE to SYZYGY interface.



0101shift/Project_OAK
All design files, source code, and documentation for Project OAK, a digital watch inspired by mechanical complications.




vul-os/sirboard
Open hardware: 107 KiCad PCB designs — SMD-to-THT breakout adapters, ATTiny/ATMega/ESP development boards, and a 39-part sensor line on a common JST-SH connector.