For Sale Audio add-on kit for RGBtoHDMI CDTV v2

[solarmon]

​

UPDATE 20/09/2025 - Available for purchase again​

These are not available for shipping to the US.​

Please declare your interest and then message me.

I have these kits for sale:

Audio add-on kit for RGBtoHDMI CDTV v2

This is a kit to add audio features to these RGBtoHDMI CDTV v2 boards only:

* RGBtoHDMI CDTV v2 (PLCC)
* RGBtoHDMI CDTV v2 (TQFP) / (original)
* RGBtoHDMI CDTV v2 (SOIC)

The audio add-on board takes the audio signals from the CDTV and injects it into the HDMI stream.

You will need to solder the kit to the RGBtoHDMI CDTV v2 board. Here is an example of the kit soldered on to the RGBtoHDMI CDTV v2 (PLCC) board:

(RGBtoHDMI board is not included, it is shown for example only)

Note: For the RGBtoHDMI CDTV v2 (SOIC) board, the audio daughter board will have to be soldered at a slight angle due to intefrerence with the SOIC chips.

Further general details about the audio add-on feature for RGBtoHDMI boards can be found at:

Audio

Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI - hoglet67/RGBtoHDMI

github.com

The audio feature require for beta/alpha firmware to be used - please see:

RGBtoHDMI CDTV v2 Quick Start Guide

RGBtoHDMI CDTV v2. Contribute to solarmon/RGBtoHDMI-CDTV-v2 development by creating an account on GitHub.

github.com

This kit includes the following:

* Audio add-on daughter board
* Resistor adapter board (required to adjust the CDTV audio signals to the correct levels).
* 2 x jumper wires

(RGBtoHDMI board is not included)

The cost will be £20 plus postage from the UK, using Royal Mail.

Postage options and costs to be agreed. Be mindful of any additional import taxes you might have to pay for your country.

Payment will be using PayPal, and the buyer must pay the fees if payment using Goods and Services payment type is required, otherwise please use Friends and Family.

These are not available for shipping to the US.
Please declare your interest and then message me.

Thank you!

 

[gienekk]

Hi, what's the difference between using resistor adapter board and an audio cable connected to L, R and GND on CDTV PCB?
I mean, if I already have an audio add-on would I still need the resistor adapter?
Thanks.

 

[solarmon]

@gienekk

Where on the CDTV motherboard are these L, R, GND signals you are referring to?

The RGBtoHDMI CDTV V2 boards exposes the AUDL and AUDR signals that are on the board connector. It has been found that these AUDL and AUDR audio signals on the connector are not at the expected levels required by the audio add-on daughter board.

 

[gienekk]

@solarmon

Cables would be connected to the pins of L and R audio sockets:

and to the audio add-on daughter board:

 

[solarmon]

@gienekk

The audio signals at that location are probably/possibly OK to be connected directly to the audio add-on board. You will have to try and see if it works.

But to you need to figure out how to get those audio signals to the audio add-on board pads.

 

[gienekk]

@solarmon

I'm planning to use cable with 3,5 mm jack socket soldered to audio add-on board pads and a 3,5 mm jack plug cable soldered to L, R, GND pins and connect them together

 

[damiraga]

Declaring interest in one kit.

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PM sent

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(Marked as sold/completed by solarmon)

 

[wmsteele]

Declaring interest.

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Interested in one kit please

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(Marked as sold/completed by solarmon)

 

[Timtheloon]

Declaring interest.

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Interested in one Kit

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(Marked as sold/completed by solarmon)

 

[wmsteele]

Declaring interest.

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Interested in one kit please

Payment sent

 

[Timtheloon]

Declaring interest.

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Interested in one Kit

Payment sent

 

[Koolvin]

Declaring interest.

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Declaring interest in one kit

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(Marked as sold/completed by solarmon)

 

[damiraga]

Payment sent!

 

[ctrlbreak]

Declaring interest.

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Declaring interest in one board

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(Marked as sold/completed by solarmon)

 

[wmsteele]

Arrived today, many thanks, feedback done

 

[segasonic]

Declaring interest.

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One please, if available. I'll PM you in the morning. Thanks!

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(Marked as sold/completed by solarmon)

 

[damiraga]

Package received. Feedback left

 

[segasonic]

Item received, feedback left. Thank you!

 

[djwenne]

Declaring interest.

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Send me a PM when Batch 2 is available

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(Marked as sold/completed by solarmon)

 

[solarmon]

Declaring interest.

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Send me a PM when Batch 2 is available

Now available for purchase again - please PM me.