HardLabs

X1

hoglet67·RGBtoHDMI·kicad_atom/v2/junk/x1.kicad_pcb

X1 PCB layout, top view — open source board by hoglet67

About the X1 PCB

X1 is an open source PCB design by hoglet67, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 121.9 × 81.3 mm, with 51 components from 23 distinct parts.

Other key parts include the XC9572XL-VQFP44 and LM319. By type, the board carries 22 resistors, 16 capacitors, 5 ICs, 3 connectors and 3 switches.

It belongs with the retro computing designs in this gallery.

From the project

Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI

The RGBtoHDMI interface converts the "digital" RGB video signal from the BBC Micro or Electron to HDMI compatible with most modern TV/Monitors. The interface comprises a Raspberry Pi Zero and a specially designed Hat containing a small CPLD. Custom firmware on the Raspberry Pi, in conjunction with the CPLD, is able to correctly sample each of the Beeb's video modes to give a pixel-perfect rendition.

Main components on the X1

XC9572XL-VQFP44LM319

X1 bill of materials (BOM)

51 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XC9572XL-VQFP44
74LVC1G66
U1
3
LM319
U2, U3, U4
1
XC9572XL-VQFP44
U5
1
Conn_02x05_Odd_Even
J1
1
Conn_01x03
J4
1
Conn_02x20_Odd_Even
J5
2
1K0
RV1, RV2
3
SW_Push_Dual
SW1, SW2, SW3
1
10UF
100n
C1
2
100NF
27p
C2, C3
1
100NF
10u
C4
2
47n
C5, C6
8
100n
C7, C8, C9, C10, C11, C12, C14, C15
2
10u
C13, C16
1
100R
R1
2
1K1
R2, R4
2
7K5
R3, R5
1
1K
R6
1
430R
R7
10
470R
R8, R9, R12, R13, R14, R15, R16, R17 +2
Show 3 more
QtyPartRefs
1
5K6
R10
1
12K
R11
3
10K
R20, R21, R22

X1 design files

The KiCad project lives in the hoglet67/RGBtoHDMI repository on GitHub; these links point at the commit this page was built from.

X1: common questions

How big is the X1 PCB?

The X1 measures 121.9 × 81.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the X1?

51 components, from 23 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 X1 design files?

From the hoglet67/RGBtoHDMI repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the X1 design in my own project?

Yes, under the terms of its GPL-3.0 license, which hoglet67 chose for the repository.

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