PicoZorro
About the PicoZorro PCB
PicoZorro is an open source PCB design by maximevince, published on GitHub. It is a 2-layer board measuring 155.5 × 65.9 mm, with 45 components from 33 distinct parts.
Other key parts include the LD1117V33 and AMS1117-3.3. By type, the board carries 16 capacitors, 9 connectors, 7 resistors, 5 modules, 2 ICs and 2 transistors.
It belongs with the retro computing and audio designs in this gallery.
From the project
Amiga Zorro-II Bus Cards using nothing but an RPi Pico to interact with the bus
The PicoZorro One is the Zorro II network and USB card of the PicoZorro project. The One TH is its through-hole version: bought modules and a handful of through-hole parts on a bare two-layer PCB. Every through-hole part also has an SMD alternate on the same board, so the same PCB can be assembled by JLCPCB instead (see "Two builds" below).
- RP2350B: a Waveshare Core2350B0 module (B0 variant, no PSRAM) on four 2x8 pin strips. Its PIO state machines speak the Zorro II bus directly. - Ethernet: a W5500 "Lite" module (USR-ES1, WIZnet WIZ850io pinout) on SPI1. - USB host: the RP2350's own USB…
Main components on the PicoZorro
PicoZorro bill of materials (BOM)
45 components, 33 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LD1117V33 STMicroelectronics | TO-220-3_Horizontal_TabDown | U2 |
| 1 | AMS1117-3.3 Advanced Monolithic Systems | SOT-223-3_TabPin2 | U201 |
| 1 | W5500 Lite J1 | PinHeader_1x06_P2.54mm_Vertical | M1J1 |
| 1 | W5500 Lite J2 | PinHeader_1x06_P2.54mm_Vertical | M1J2 |
| 1 | microSD breakout | PinHeader_1x06_P2.54mm_Vertical | M2 |
| 1 | GY-PCM5102 6-pin | PinHeader_1x06_P2.54mm_Vertical | M3J1 |
| 1 | GY-PCM5102 9-pin | PinHeader_1x09_P2.54mm_Vertical | M3J2 |
| 1 | 2N3904 | TO-92_Inline | Q1 |
| 1 | MMBT3904 CJ (Changjiang) | SOT-23 | Q101 |
| 1 | USB_A | USB_A_Molex_67643_Horizontal | J2 |
| 1 | USB int | PinHeader_2x05_P2.54mm_Vertical | J3 |
| 1 | SWD | PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | RUN/BOOT | PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | DM3AT-SF-PEJM5 Hirose | microSD_HC_Hirose_DM3AT-SF-PEJM5 | J6 |
| 1 | Core2350B P1 | PinHeader_2x08_P2.54mm_Vertical | P1 |
| 1 | Core2350B P2 | PinHeader_2x08_P2.54mm_Vertical | P2 |
| 1 | Core2350B P3 | PinHeader_2x08_P2.54mm_Vertical | P3 |
| 1 | Core2350B P4 | PinHeader_2x08_P2.54mm_Vertical | P4 |
| 1 | RUEF090 PTC 0.9A hold Littelfuse | Fuse_Bourns_MF-RHT070 | F1 |
| 1 | 1812L110/33MR PTC 1.1A hold Littelfuse | Fuse_1812_4532Metric | F101 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1N5817 | D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | SS14 MDD (Microdiode Semiconductor) | D_SMA | D101 |
| 1 | 100U 100u | CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 220U 220u | CP_Radial_D8.0mm_P3.50mm | C2 |
| 1 | 10U 10u | CP_Radial_D5.0mm_P2.00mm | C3 |
| 1 | 10U 10u | C_Disc_D5.1mm_W3.2mm_P5.00mm | C4 |
| 1 | CC0603KRX7R9BB104 100n YAGEO | C_0603_1608Metric | C5 |
| 2 | CL21A106KAYNNNE 10u Samsung Electro-Mechanics | C_0805_2012Metric | C6, C301 |
| 9 | CL31A226KAHNNNE 22u Samsung Electro-Mechanics | C_1206_3216Metric | C101, C102, C103, C201, C202, C203, C204, C205 +1 |
| 1 | 2.2K 2.2k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 4 | 0603WAF1002T5E 10k UNI-ROYAL | R_0603_1608Metric | R2, R3, R4, R5 |
| 1 | 0603WAF100KT5E 1R0 UNI-ROYAL | R_0603_1608Metric | R6 |
| 1 | 0603WAF2201T5E 2.2k UNI-ROYAL | R_0603_1608Metric | R101 |
PicoZorro design files
The KiCad project lives in the maximevince/PicoZorro repository on GitHub; these links point at the commit this page was built from.
PicoZorro: common questions
How big is the PicoZorro PCB?
The PicoZorro measures 155.5 × 65.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PicoZorro?
45 components, from 33 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the PicoZorro design files?
From the maximevince/PicoZorro repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the PicoZorro design in my own project?
The repository has no license, so all rights stay with maximevince. Use it as a reference, and ask the author before reusing the design.
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