LCR meter DE-5000, integrating the USB interface

Thanks for watching my video!
Apologies for my voice, I’m recovering from a cold.

The DE-5000 is an very good LCR meter, that has been incredibly useful in many of my designs. Before this modification, I was using a homemade external interface cable, but it wasn't very convenient. This installation finally meets all my needs and makes everything much easier.

For the USB to TTL converting, I used PCB with the CP2102 chip and USB-C connector.
I don’t know the exact part number for the phototransistor I used, as I pulled it from a box with a lot of old components.
The positions of the TX diode and RX transistor inside the LCR meter are carefully adjusted to point directly at each other.

If you’re interested, you can find various DIY interface cables for the DE-5000 with a simple internet search.

73!