2 layers72 × 72 mm
4 layers103 × 107 mm
Central control
adarwoo/KiCadAll KiCad projects
- Size
- 103 × 107 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 153
- Nets
- 153
- Pads
- 485
- Tracks, vias
- 820, 83
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Aug 2023
- Updated
- 14 Mar 2025
Overview
Central control is an open-source printed circuit board by adarwoo, from the adarwoo/KiCad repository on GitHub. It is a 4-layer board of 103 × 107 mm with 153 parts on 153 nets, routed with 820 tracks and 83 vias.
It is built around the ATTINY3226-SU, LMR33630ADDA and PCA9555PW. Its parts include 68 resistors, 23 capacitors, 18 diodes, 17 connectors and 16 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATTINY3226-SU
SOIC-20-300mil1.8V~5.5V 12bit 18 20MHz 32KB AVR SOIC-20-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
LMR33630ADDA
ESOP-8-40℃~+125℃@(TJ) 1 1V~24V 24uA 3.8V~36V 3A 400kHz Adjustable Buck Buck Built-in Yes ESOP-8 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
PCA9555PW
TSSOP-24-40℃~+85℃ 1.1uA 16 2.3V~5.5V 3mA 400kHz 8 I2C、SMBus Interrupt Output Reset function、Cascade and address expansion TSSOP-24 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
README
README.mdKiCad
All KiCad projects
Adding all KiCad projects.
Currently, PCBs for the cnc (see Youtube guillaume.arreckx channel) are publised.
Parts
153| Qty | Value | Footprint | References |
|---|---|---|---|
| 31 | 332 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R11, R12, R13, R14, R15, R17, R44, R45, R46, R47, R48, R49, R50, R51, R52, R53 +15 |
| 17 | 432 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R20, R21, R22, R30, R31, R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42 +1 |
| 14 | LED | LED_THT:LED_D3.0mm | D1, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18 |
| 10 | 1nF 250V | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C11, C16, C17, C18, C19, C20, C22, C23, C24, C25 |
| 10 | PC817 | Package_DIP:DIP-4_W7.62mm | U5, U6, U8, U9, U10, U14, U15, U17, U18, U19 |
| 7 | 560 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R74, R75, R76, R78, R79, R80, R81 |
| 5 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7, C8, C12, C13, C14 |
| 5 | 3pins | Connector_Phoenix_MC:PhoenixContact_MCV_1,5_3-G-3.81_1x03_P3.81mm_Vertical | J6, J7, J11, J12, J14 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopBottom | H1, H2, H3, H4 |
| 4 | Phoenix | Connector_Phoenix_MC:PhoenixContact_MCV_1,5_2-G-3.81_1x02_P3.81mm_Vertical | J8, J9, J10, J16 |
| 3 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R16, R84, R85 |
| 3 | 2k21 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R27, R28, R29 |
| 3 | 6pins | Connector_Phoenix_MC:PhoenixContact_MCV_1,5_6-G-3.81_1x06_P3.81mm_Vertical | J1, J2, J3 |
| 3 | PCA9555PW | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U11, U12, U13 |
| 2 | 10u 50v | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C1, C5 |
| 2 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C10 |
| 2 | 6k81 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5, R6 |
| 2 | 7pins | Connector_Phoenix_MC:PhoenixContact_MCV_1,5_7-G-3.81_1x07_P3.81mm_Vertical | J4, J5 |
| 2 | ~ | adarwoo:Murata_NFM61R | F1, F2 |
| 1 | 100K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 1 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R83 |
| 1 | 10n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 10uH | Inductor_SMD:L_Wuerth_HCM-7070 | L1 |
| 1 | 220nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 24k9 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 47u | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C6 |
| 1 | 680 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3 |
| 1 | ATtiny3226 | Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm | U3 |
| 1 | AVR-UPDI | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J20 |
| 1 | DE9_Socket_MountingHoles | Connector_Dsub:DSUB-9_Pins_Vertical_P2.77x2.84mm_MountingHoles | J17 |
| 1 | GND_TP | TestPoint:TestPoint_Loop_D3.50mm_Drill0.9mm_Beaded | TP2 |
| 1 | GRN | LED_THT:LED_D3.0mm | D5 |
| 1 | IDLE | TestPoint:TestPoint_Loop_D3.50mm_Drill0.9mm_Beaded | TP3 |
| 1 | LMR33630ADDA | Package_SO:Texas_HSOP-8-1EP_3.9x4.9mm_P1.27mm_ThermalVias | U1 |
| 1 | LOGO | LOGO | G*** |
| 1 | LT1785AxS8 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | Vcc TP | TestPoint:TestPoint_Loop_D3.50mm_Drill0.9mm_Beaded | TP1 |
| 1 | green | LED_THT:LED_D3.0mm | D4 |
| 1 | orange | LED_THT:LED_D3.0mm | D3 |
| 1 | red | LED_THT:LED_D3.0mm | D2 |
| 1 | ~ | adarwoo:GroundPlot | J13 |
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Questions
How big is the Central control PCB?
It measures 103 × 107 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Central control use?
153 parts, built around the ATTINY3226-SU, LMR33630ADDA and PCA9555PW. 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 Central control KiCad files?
From the adarwoo/KiCad repository on GitHub, at the commit this page was made from: the board is cnc/central_control/central_control.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Central control design in my own project?
Its repository states no licence, so its author keeps all rights: ask adarwoo before reusing the design.