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New board revision

A project log for Accel-Lights for Inline

Reactive RGB LED lights for Inline Skates

mM 03/31/2026 at 01:390 Comments

I now have a new revision of the board on the way with several fixes and improvements. I adjusted the layout to make it more symmetrical, so it would work mounted on either edge.

I moved the esp32 module to the center moved the antenna onto the board, then removed the copper from the top and bottom layer. I think this will better protect the board should an impact occur and the edge of the board is hit.

I changed the IMU to one that is cheaper and more reliable. I haven't used an accelerometer in a project for many years. So I initially added the mpu6050 because I knew there was good arduino support. However, that increased the cost of my first prototype, then I later learned it was deprecated. So I switched to the LSM6DSV, since it was available in JLCPCB parts for economic assembly. I also read that this series of IMU was being used in other products, like the SlimeVR, so I made an assumption that I would not have any issues working with it.

I changed and moved the USB port, so that it would be easier to access for charging/programming when mounted to the skate frames. The previous connector was difficult to access when I first mounted it to the frames.

The On/Off switch was moved to the center so I could easily shut off the lights after a skate session.

I removed the cp2102 usb bridge, since the esp32-C3 supports USB natively.

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