mcejp/overkill-cyclometer4Open hardware DIY cyclometer
BikECU v2.1-PCB is an open-source printed circuit board by mcejp, from the mcejp/overkill-cyclometer repository on GitHub. It is a 2-layer board of 60 × 60 mm with 40 parts on 42 nets, routed with 234 tracks and 26 vias.
It is built around the BC547 and IRFR9024. Its parts include 8 connectors, 7 resistors, 4 capacitors, 3 transistors and 2 ICs. It belongs with the lEDs and displays boards and the RP2040 boards of this library.
Prerequisites:
convert tool) & xxdmkdir build
cd build
env PICO_SDK_PATH=... PICO_TOOLCHAIN_PATH=... cmake ..
make
# flash
cp bikECU.uf2 /media/RPI-RP2/Prerequisites:
mkdir build_libretro
cd build_libretro
cmake ..
make
sdlarch ./libbikECU_libretro.so
# alternatively:
# retroarch -L ./libbikECU_libretro.soTBD
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | TestPoint | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | GP0, GP1, GP16, GP17 |
| 3 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R6 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R7 |
| 2 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C3, C4 |
| 2 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2 |
| 1 | 0.02R | Resistor_SMD:R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R5 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 100u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 30k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 3V3 | TestPoint:TestPoint_Pad_2.0x2.0mm | TP3 |
| 1 | 9V | TestPoint:TestPoint_Pad_2.0x2.0mm | TP2 |
| 1 | Btn_box | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J4 |
| 1 | GND | TestPoint:TestPoint_Pad_2.0x2.0mm | TP1 |
| 1 | Harness_conn | Connector_JST:JST_PH_B6B-PH-K_1x06_P2.00mm_Vertical | J7 |
| 1 | INA194 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | IRFR9024 | Package_TO_SOT_SMD:TO-252-2 | Q3 |
| 1 | LEG1A-5 | Relay_THT:Relay_SPST_SANYOU_SRD_Series_Form_A | K1 |
| 1 | LOGO | PCBway:OCM_logo | G*** |
| 1 | LOGO | PCBway:PCBway_logo | G*** |
| 1 | Light_F | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J6 |
| 1 | Light_R | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J5 |
| 1 | Power_in | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J1 |
| 1 | Power_led | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J3 |
| 1 | Power_sw | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J2 |
| 1 | RP2040_Connect | RP2040_Connect:RP2040_Connect | U2 |
| 1 | Rtc_hdr | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J8 |
The 39 most common of 40 parts.
It measures 60 × 60 mm and has 2 copper layers, 1.6 mm thick.
40 parts, built around the BC547 and IRFR9024. 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 mcejp/overkill-cyclometer repository on GitHub, at the commit this page was made from: the board is hw/bikECU-v2.1-PCB/bikECU-v2.1-PCB.kicad_pcb and its schematic hw/bikECU-v2.1-PCB/bikECU-v2.1-PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask mcejp before reusing the design.
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