Hdmi ddc intermediary
About the Hdmi ddc intermediary PCB
Hdmi ddc intermediary is an open source PCB design by raffcorreia, published on GitHub under the MIT license. It is a 4-layer board measuring 110 × 65 mm, with 23 components from 12 distinct parts.
Other key parts include the TCA4307DGKR, PCA9306DCTR and TPS2113APWR. By type, the board carries 12 resistors, 4 capacitors, 3 ICs, 3 connectors and 1 transistor.
From the project
REST API and local touch UI for invasive control of Samsung CJ791 monitors by electrically emulating the front-panel JOG button. Uses an inline hardware mod on the JOG harness and DDC/CI for feedback, status, and supported monitor functions like input detection and power control.
samsung-jog-api is a hardware-and-software project to make a Samsung CJ791 monitor locally programmable by electrically emulating its front-panel JOG control, exposing that behavior through a local REST API, and hosting a touch-first local control interface on a Raspberry Pi-based control deck.
This repository is organized around the Samsung LC34J791WTNXZA / CJ791 hardware in my setup. Related Samsung monitors with a similar multi-jog front-panel board may be adaptable, but the measurements and assumptions here are specific to this unit unless noted otherwise.
Main components on the Hdmi ddc intermediary
Hdmi ddc intermediary bill of materials (BOM)
23 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TCA4307DGKR Texas Instruments | MSOP-8_3x3mm_P0.65mm | U1 |
| 1 | PCA9306DCTR Texas Instruments | SOT-23-8 | U2 |
| 1 | TPS2113APWR Texas Instruments | TSSOP-8_4.4x3mm_P0.65mm | U3 |
| 1 | 2N7002 TECH PUBLIC | SOT-23 | Q1 |
| 1 | 10029449-111RLF HDMI_SOURCE Amphenol ICC | HDMI_A_Amphenol_10029449-x01xLF_Horizontal | J1 |
| 1 | 10029449-111RLF HDMI_MONITOR Amphenol ICC | HDMI_A_Amphenol_10029449-x01xLF_Horizontal | J2 |
| 1 | PI_HOST_CTRL Generic | PinHeader_1x12_P2.54mm_Vertical | J3 |
| 4 | CL10B104KA8NNNC 100n Samsung Electro-Mechanics | C_0603_1608Metric | C1, C2, C3, C4 |
| 8 | RC0603FR-07100KL 100k Yageo | R_0603_1608Metric | R1, R2, R6, R7, R8, R9, R10, R11 |
| 1 | RMC_0603_10K_JN 10k TyoHM | R_0603_1608Metric | R3 |
| 2 | RC0603FR-074K7L 4.7k Yageo | R_0603_1608Metric | R4, R5 |
| 1 | RC0603FR-071KL 1k Yageo | R_0603_1608Metric | R12 |
Hdmi ddc intermediary design files
The KiCad project lives in the raffcorreia/samsung-jog-api repository on GitHub; these links point at the commit this page was built from.
Hdmi ddc intermediary: common questions
How big is the Hdmi ddc intermediary PCB?
The Hdmi ddc intermediary measures 110 × 65 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Hdmi ddc intermediary?
23 components, from 12 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 Hdmi ddc intermediary design files?
From the raffcorreia/samsung-jog-api 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 Hdmi ddc intermediary design in my own project?
Yes, under the terms of its MIT license, which raffcorreia chose for the repository.
