Usually, the inputs and outputs of a relay are isolated. But impossible to tell without more information or at least a picture.

It's the first version, AGS001.

You are right. And for using USB-C to USB-C cables, you have to configure the voltage. The simplest way is to add resistors to the control lines, but ...

I had to move my projects away, since we had some guests, and I was distracted by some side-projects involving retro game consoles (creating a USB-C P...

A nice change is that now it is using a buck converter instead of a LDO for converting the Vin/Barrel voltage. This is more efficient and produces les...

Another update! I finally decided how to install the ToF distance sensors. I drilled a three small holes in the front and rear, exactly the size of th...

Here is the finished board, I'm using pins 34, 36, 38, and 40 for the enable/shutdown connection: I also got my LSM303DLHC module, which I'll tr...

I ordered a few ToF I²C distance sensors to prevent collisions. So, I decided to redo the perfboard mini shield to add more JST sockets. This time, I'...

It worked perfectly fine so far. I was able to connect to my PlayStation Navigation Controller and added some simple commands. Next, I'll add the anal...

Another small update. I got a full refund on the nonworking USB Host Shield, and my replacement ICs arrived. Here is the result of replacing it: (...

Small update. I received a smaller servo, and it fits nicely: The cable was a bit too short, so I crimped myself an extension cable. I als...

After fetching my laptop and USB mini-camera, I took a foto of the colliding parts. This time it isn't the vertical height of the servo, but the diffe...

In the end, I gave IR up for now. At first I confused VCC and GND, killing one of my two IR receivers, and now I can't get the other one working corre...

I just couldn't leave it like that, had to change it again. I want to keep the IR in addition to the Bluetooth module, so I added a 3 pin socket. Al...