CYD Peripheral Leads

Projects General Guidance
1

Does anyone know what this lead is called? The one with the red, black, yellow and blue coloured cables? I have 6 CYDs and all I have are the power cables and I want to expand projects using the available extended IOs. GPIO 35, GPIO 21 (Backlight), GPIO 22, GPIO 27.

I’ve seen quite a few on Aliexpress but I have no idea of the size I need or if there is a unique name for them. If someone who knows exactly what they are called, could you have a look on Aliexpress and send me a link to them please?

Screenshot 2025-10-06 at 01.35.07
Screenshot 2025-10-06 at 01.35.07374×354 77.3 KB

Thanks in advance :slight_smile:

2

Is this what you are talking about?
Its a Grove 4 pin Female Jumper to Grove 4 pin Conversion Cable

AliExpress Link as you asked

shopping
shopping450×426 13.5 KB

3

All the information you need is summarized below.

In particular, please refer to the schematic.

The diagram below is the one I created when connecting an I2C device.

I2C-on-CYD
I2C-on-CYD1380×1020 138 KB

Please refer to the pin assignment below:

4

I use a PB1.25 to Dupont 2.54mm Connectors and Cables Kit to make up various cables for CYD displays
a MCP23017-GPIO-expander is useful for adding extra GPIO , e.g. for extra SPI select lines
also worth looking at is the tca9548a-i2c-multiplexer

5

No the connector is different. That one in the image has a tab. The one I’m looking for doesn’t.

6

which image?
have you an image of the connector you require?