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October Release - The T-wist Beta3
🕑 Added 2020-10-14 17:54:02 +0000 UTCHi guys,
The T-wist is now much simpler!
This month's update is the best kind of design update: one where have been able to drastically reduce the complexity.
Those of you who have been following my recent design updates on discord and on my development blog here on Patreon will know that I have recently been able to get rid of the L-bracket and the potentiometer. This is thanks to one of the guys on my discord server discovering a special servo (Parallax Feedback 900-00360 360° Servo) that has an extra wire, which offers a much easier way to track rotation.
The result is a twist receiver that has much fewer parts, and is literally just plug-and-play into the Romeo. It's also now capable of double the rotation speed of the old T-wist. The twist receiver was already a very popular add-on to the OSR2 experience, but this version takes that to a whole new level, especially as it's now much easier to use!
This month's $8 release is the complete set of STLs for this upgrade, along with a parts list and build document.
As usual I have attached the firmware for the new T-wist enabled OSR2 to this post. This new code has a couple of changes that are worth noting.
First, the left servo should now be plugged into digital pin 8, as the t-wist servo's tracker wire now needs to use the hardware interrupt function on the Romeo's pin 2. The right arm still uses pin 3 as before.
Second, this firmware incorporates an experimental servo control code, which my subscribers will know I introduced in version 2.6. The default Arduino servo library operates at 50Hz, but this code increases the servo update rate to 250Hz. In theory this should create much smoother movements, especially for those of you watching scripted videos, and I've had pretty positive feedback. Always willing to hear more though.
I would like to say thanks again to my supporters who make all of this possible. I intend to come back later this month with an update on the new design I am working on, the SR6.
In the meantime, happy building!
Comments
Hiro P
Since the Romeo board has integrated Bluetooth, are there any plans to use it?
Nice!
