2 layers458.2 × 116.3 mm
2 layers171.5 × 152.4 mm
Big macro pad
obra/big-macro-pad3A quick and dirty 8x9 macro pad using a GD32F303 MCU
- Size
- 171.5 × 152.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 177
- Nets
- 125
- Pads
- 792
- Tracks, vias
- 783, 151
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 10 Dec 2021
- Updated
- 10 Dec 2021
Overview
Big macro pad is an open-source printed circuit board by obra, from the obra/big-macro-pad repository on GitHub. It is a 2-layer board of 171.5 × 152.4 mm with 177 parts on 125 nets, routed with 783 tracks and 151 vias.
It is built around the GD32F303CGT6, MIC5504-3.3YM5-TR and SRV05-4HTG, with the RC0603JR-0710KL, V5.5MLA0603NH and NANOSMDC075F-2 among its other parts. Its parts include 73 switches, 72 diodes, 12 resistors, 10 capacitors and 3 ICs. It belongs with the keyboards and input boards of this library.
Main components
7
GD32F303CGT6
LQFP-48(7x7)120MHz 12bit 12bit 2.6V~3.6V 256KB 37 ARM Cortex-M4 FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSGigaDevice Semicon BeijingMicrocontrollers (MCU/MPU/SOC)
MIC5504-3.3YM5-TR
SOT-23-5-40℃~+125℃@(Tj) 1 160mV@(300mA) 175uVrms 3.3V 300mA 38uA 5.5V 60dB@(1kHz) Fixed Over Current Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SRV05-4HTG
SOT-23-610A@8/20us 150W 15V 3pF 500nA 6V IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 TVS SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
RC0603JR-0710KL
UncategorisedUnknown maker
V5.5MLA0603NH
06031.27nF@1MHz 100mJ 17.5V 30A 4V 5.5V 8.2V 0603 Varistors ROHSLittelfuseVaristors
NANOSMDC075F-2
12060.68mm 1.5A 1.6mm 100A 3.4mm 300mΩ 6V 750mA 800mW 90mΩ 1206 Resettable Fuses ROHSLittelfuseResettable Fuses
TS-1145-C-B
SMD-4P,4.2x3.2mm-30℃~+85℃ 100,000 cycles 12V 2.5mm 2.6N 3.2mm 4.2mm 50mA Blue No Oval Button SPST Surface Mount,Vertical Without Bracket SMD-4P,4.2x3.2mm Tactile Switches ROHSXKB ConnectionTactile Switches
Parts
177| Qty | Value | Footprint | References |
|---|---|---|---|
| 72 | 1N4148 | Diode_SMD:D_SOD-123 | D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24 +56 |
| 72 | SW_Push_45deg | Switch_Keyboard_Kailh:SW_Hotswap_Kailh_1.00u | SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24, SW25 +56 |
| 6 | 10K | Resistor_SMD:R_0603_1608Metric | R2, R3, R4, R5, R6, R7 |
| 5 | 1µF ±20% 10V Ceramic Capacitor X5R 0603 (1608 Metric) | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C5 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C6, C7 |
| 2 | 22R | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 4.7uF 16V X7R | Capacitor_SMD:C_1206_3216Metric | C8, C9 |
| 2 | 5.1K 1% | Resistor_SMD:R_0603_1608Metric | R11, R12 |
| 2 | V5.5MLA0603NH | Resistor_SMD:R_0603_1608Metric | RV1, RV2 |
| 1 | 1.5k | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 10nF 100V | Capacitor_SMD:C_0805_2012Metric | C10 |
| 1 | 500K | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | Conn_01x05_Male | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J1 |
| 1 | FERRITE 390 OHM | Capacitor_SMD:C_1206_3216Metric | L1 |
| 1 | GD32F303CGT6 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | MIC5504-3.3YM5-TR | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | PTC RESET FUSE 6V 750MA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | SRV05-4HTG | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | SW_PUSH | Button_Switch_SMD:SW_SPST_PTS810 | SW1 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | USB - C USB 3.1 (USB 3.1 Gen 2, Superspeed+) Receptacle Connector 24 Position Surface Mount, Right Angle | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | USB1 |
Questions
How big is the Big macro pad PCB?
It measures 171.5 × 152.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Big macro pad use?
177 parts, built around the GD32F303CGT6, MIC5504-3.3YM5-TR, SRV05-4HTG and RC0603JR-0710KL. 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 Big macro pad KiCad files?
From the obra/big-macro-pad repository on GitHub, at the commit this page was made from: the board is big-macro-pad.kicad_pcb and its schematic big-macro-pad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Big macro pad design in my own project?
Its repository states no licence, so its author keeps all rights: ask obra before reusing the design.
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