El-Barato-64
About the El-Barato-64 PCB
El-Barato-64 is an open source STM32 PCB design by Hazematman, published on GitHub. It is a 2-layer board measuring 100.5 × 60 mm, with 55 components from 19 distinct parts.
Its main chip is the STM32F103C8Tx, from the STM32 family. Other key parts include the W9825G6KH, EPM570T144 and AMS1117-3.3. By type, the board carries 27 capacitors, 12 resistors, 6 diodes, 4 ICs, 4 connectors and 1 crystal.
From the project
Open source N64 development Cartridge
Uses Altera MAX II EPM570 to emulate N64 cartridge bus. N64 ROM is stored in SDRAM controlled by this FPGA. Uses an STM32 for USB communication and general board control. This board is designed to be as cheap as possible and beginner friendly. Parts were selected based on their avaliablity in the JLCPCB part inventory. All components except the micro USB connector and reset switch are avalible from JLCPCB, and thus they can manufacture the majority of the board.
Main components on the El-Barato-64
El-Barato-64 bill of materials (BOM)
55 components, 19 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F103C8Tx | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | W9825G6KH | TSOP-II-54_22.2x10.16mm_P0.8mm | U2 |
| 1 | EPM570T144 | LQFP-144_20x20mm_P0.5mm | U3 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U5 |
| 1 | 16MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | STM32_JTAG | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | CPLD_JTAG | PinHeader_2x05_P2.54mm_Vertical | J2 |
| 1 | USB_B_Micro | USB_Micro-AB_Molex_47590-0001 | J3 |
| 1 | cart_conn | Conn_N64 | P1 |
| 1 | SW_Push | SW_PUSH_6mm | SW1 |
| 3 | D_Schottky | D_SOD-123 | D1, D5, D6 |
| 3 | LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2, D3, D4 |
| 24 | C100nf | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +16 |
| 2 | C20pf | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C13, C14 |
| 1 | C22uf | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C18 |
| 2 | DNP | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R3 |
| 2 | R3.3k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2, R4 |
| 3 | R330 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R5, R11, R12 |
| 5 | R10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R6, R7, R8, R9, R10 |
El-Barato-64 design files
The KiCad project lives in the Hazematman/El-Barato-64 repository on GitHub; these links point at the commit this page was built from.
El-Barato-64: common questions
What microcontroller does the El-Barato-64 use?
The El-Barato-64 is built around the STM32F103C8Tx, from the STM32 family.
How big is the El-Barato-64 PCB?
The El-Barato-64 measures 100.5 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the El-Barato-64?
55 components, from 19 distinct parts. The full bill of materials is listed on this page.
Where can I download the El-Barato-64 design files?
From the Hazematman/El-Barato-64 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the El-Barato-64 design in my own project?
The repository has no license, so all rights stay with Hazematman. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the El-Barato-64 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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