UPDATE: This is confirmed to work with the DL200 and DL300!

I was disappointed with Neewer's app support for the DL200 camera dolly, so I reverse engineered the Bluetooth communication and made a quick webapp to control it, along with some extra features.

00:00 - Intro to Neewer DL200
00:23 - Connecting
00:45 - Basic Movement
01:53 - Super Slow Mode
02:35 - Fixed Durations
03:10 - Tests for Slow Modes
04:04 - Ping Pong Mode
05:53 - Demo
06:13 - Stop at Focal Point
07:26 - Outro

If you have a Neewer DL200 or DL300, you can control it from this URL:
https://everlastengineering.com/neewe...

Next up in the app development, I'll be implementing these features :

- set marker points by jogging manually to determine the ping pong length
- time delays
- showing battery information
- showing device speed in UI
- shutter control
- nicer UI
- custom sequences

If you have some ideas, please put them in the comments below!