2 layers121.9 × 81.3 mm
Rgb to hdmi
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
53 parts1kGPL-3.0
2 layers77 × 97 mm
Rgb to hdmi
hoglet67/RGBtoHDMI1kBare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
- Size
- 77 × 97 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 76
- Nets
- 89
- Pads
- 289
- Tracks, vias
- 621, 35
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Apr 2017
- Updated
- 18 May 2026
Overview
Rgb to hdmi is an open-source printed circuit board by hoglet67, from the hoglet67/RGBtoHDMI repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 77 × 97 mm with 76 parts on 89 nets, routed with 621 tracks and 35 vias.
It is built around the 74LVC1G66GW and LE33CZ-TR. Its parts include 24 resistors, 18 capacitors, 11 connectors, 6 ICs and 4 switches. It belongs with the interfaces and adapters and lEDs and displays boards and the FPGA and CPLD boards of this library.
Main components
2
74LVC1G66GW
SOT-353-40℃~+125℃ 1.65V~5.5V 11pF 155MHz 1:1 4.2ns 5.3ns 600ps 6Ω SOT-353 Analog Switches, Multiplexers ROHSNexperiaAnalog Switches, Multiplexers
LE33CZ-TR
TO-92-40℃~+125℃@(Tj) 1 100mA 18V 3.3V 400mV@(100mA) 500uA 50uV 60dB@(10kHz)、75dB、80dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection Positive TO-92 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdRGBtoHDMI
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.
For more information, see the project Wiki.
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 470R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9, R12, R13, R14, R15, R16, R17, R18, R19 |
| 9 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_Pad | H1, H2, H3, H4, H5, H6, H7, H8, H9 |
| 4 | 100n | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C1, C7, C8, C18 |
| 4 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C4, C13, C16, C17 |
| 3 | 100n | Capacitor_THT:C_Axial_L5.1mm_D3.1mm_P10.00mm_Horizontal | C10, C11, C12 |
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9, C14, C15 |
| 3 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R20, R21, R22 |
| 3 | LM319 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U2, U3, U4 |
| 3 | SW_Push | footprints:SW_TH_Tactile_Omron_B3F-100x | SW1, SW2, SW3 |
| 2 | 1K0 | Potentiometer_THT:Potentiometer_Vishay_T73YP_Vertical | RV1, RV2 |
| 2 | 1K1 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R4 |
| 2 | 27p | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C2, C3 |
| 2 | 330R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R23, R24 |
| 2 | 47n | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C5, C6 |
| 2 | 7K5 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R5 |
| 2 | Conn_01x01 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J7, J8 |
| 2 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9, J10 |
| 2 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J6, J11 |
| 2 | LED | LED_THT:LED_D3.0mm | D1, D2 |
| 1 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 12K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 430R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | 5K6 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
| 1 | 74LVC1G66 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | J4 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | Conn_02x01 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_02x05_Odd_Even | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J1 |
| 1 | Conn_02x20_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J5 |
| 1 | LE33CZ | Package_TO_SOT_THT:TO-92_HandSolder | U6 |
| 1 | SW_Push | Button_Switch_THT:SW_Tactile_SKHH_Angled | SW4 |
| 1 | XC9572XL-VQFP44 | Package_QFP:LQFP-44_10x10mm_P0.8mm | U5 |
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Questions
How big is the Rgb to hdmi PCB?
It measures 77 × 97 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Rgb to hdmi use?
76 parts, built around the 74LVC1G66GW and LE33CZ-TR. 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 Rgb to hdmi KiCad files?
From the hoglet67/RGBtoHDMI repository on GitHub, at the commit this page was made from: the board is kicad_atom/v3/rgb-to-hdmi.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Rgb to hdmi design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).