2 layers99.1 × 97.8 mm
Zacatecas
zuiko21/zacatecas
Chihuahua-based 65C02 SBC with integrated peripherals (LCD text screen, microSD card reader, 8-key pad)
53 partsMIT
2 layers97.8 × 72.4 mm
Chihuahua
zuiko21/chihuahuasimple 65C02-based Single Board Computer
- Size
- 97.8 × 72.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 87
- Pads
- 315
- Tracks, vias
- 1,019, 69
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 Jun 2024
- Updated
- 25 Jul 2024
Overview
Chihuahua is an open-source printed circuit board by zuiko21, from the zuiko21/chihuahua repository on GitHub, published under the MIT licence. It is a 2-layer board of 97.8 × 72.4 mm with 40 parts on 87 nets, routed with 1,019 tracks and 69 vias.
It is built around the 74HC132D, 74HC32D and BC548, with the BAT85 among its other parts. Its parts include 6 connectors, 5 resistors, 5 ICs, 3 capacitors and 3 transistors. It belongs with the computers and single-board computers boards of this library.
Main components
4
74HC132D
SO-14-40℃~+125℃ 1.5V~4.2V 2 21ns@6V,50pF 2V~6V 2uA 3.7V~4.5V、5.2V~6V 300mV~1.2V 4 400mV 5.2mA 5.2mA 74HC Series NAND Gate Schmitt trigger SOIC-14 Logic Gates ROHSNexperiaSpecialty Logic74HC32D
SOP-14-40℃~+125℃ 1.5V~4.2V 1.9V、4.4V、5.9V 100mV、400mV、400mV 2 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 6ns@6V,50pF 74HC Series OR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
BC548
TO-92TO-92 Bipolar (BJT) ROHSDDFBipolar (BJT)
BAT85
DO-341 Independent 200mA 2uA@25V 30V 5A 800mV@100mA DO-34 Schottky Diodes ROHSNexperiaSchottky Diodes
README
README.mdchihuahua
simple 65C02-based Single Board Computer
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | BC548 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2, Q3 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad | H1, H2, H3 |
| 2 | 22K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R1, R2 |
| 2 | 3K3 | Resistor_THT:R_Array_SIP9 | RN2, RN3 |
| 2 | 680 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R4, R5 |
| 1 | 1 MHz | Oscillator:Oscillator_DIP-8 | X1 |
| 1 | 100µ | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C3 |
| 1 | 10µ | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C1 |
| 1 | 22n | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C4 |
| 1 | 3K3 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R3 |
| 1 | 4K7 | Resistor_THT:R_Array_SIP5 | RN1 |
| 1 | 62256 | Package_DIP:DIP-28_W15.24mm_Socket | U3 |
| 1 | 65C02 | Package_DIP:DIP-40_W15.24mm_Socket | U1 |
| 1 | 65C22 | Package_DIP:DIP-40_W15.24mm_Socket | U2 |
| 1 | 74HC132 | Package_DIP:DIP-14_W7.62mm_Socket | U4 |
| 1 | 74HC32 | Package_DIP:DIP-14_W7.62mm_Socket | U5 |
| 1 | BAT85 | Diode_THT:D_DO-35_SOD27_P2.54mm_Vertical_KathodeUp | D1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | CARTRIDGE | Connector_PinSocket_2.54mm:PinSocket_2x18_EDGE | J1 |
| 1 | D | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP1 |
| 1 | IOx | Connector_IDC:IDC-Header_2x08_P2.54mm_Vertical | J3 |
| 1 | LATCH | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP4 |
| 1 | Logo_Open_Hardware_Large | Symbol:OSHW-Symbol_8.9x8mm_SilkScreen | LOGO1 |
| 1 | Logo_Open_Hardware_Small | durango:jaqueria | LOGO2 |
| 1 | NMI | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | ON | LED_THT:LED_D3.0mm | D3 |
| 1 | POWER | Connector_JST:JST_EH_S2B-EH_1x02_P2.50mm_Horizontal | J6 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | STEP | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | VIAport | Connector_IDC:IDC-Header_2x20_P2.54mm_Vertical | J2 |
| 1 | nanoLink | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | ~{C} | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP2 |
| 1 | ~{WDC} | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3 |
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Questions
How big is the Chihuahua PCB?
It measures 97.8 × 72.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Chihuahua use?
40 parts, built around the 74HC132D, 74HC32D, BC548 and BAT85. 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 Chihuahua KiCad files?
From the zuiko21/chihuahua repository on GitHub, at the commit this page was made from: the board is kicad/chihuahua.kicad_pcb and its schematic kicad/chihuahua.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Chihuahua 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).