Nearly 600 views in 4 months. A lot of people are interested in this feature.

There is a unicode24 font. It does not look very good (think ransom note for a stolen pet) but is possible.

?

It was my screens resolution/zoom state. The button is now appearing.

@world101 Just had a go at this and I am now seeing the plus button. Thank you very much for your help. :-)

I have been trying to add UNITS and HATs in UIFLOW online 1.7.2.

Atom Matrix and StickC

I have used the latest burner software to flash devices with firmware 1.7.2.

I am in the UK.

There is no + sign in UIFLOW 1.7.2 (online) to add UNITs and HATs.

Other users (don't know what country) have reported they can see the + button to add UNITs and HATs.

@world101 I'm using a Laptop (win10). Screen res is the highest possible at 1366x168. I went fullscreen to check it wasn't just really low down on the screen but that didn't help. Still no + button.

Had another go this morning. I even bothered to:1) connect via wifi 2)update m5burner software 3)try with another device (StickC).

Still no way you add UNITs and HATs.

Light Painting and Persistence-of-Vision (POV) seem to be slightly different things. I have found the Adafruit learn guides (https://learn.adafruit.com/ search POV) very interesting. They are suggesting you need to use DotStar LEDs with their 20Khz refresh rate (for POV), rather than Neopixel with a 400hz refresh rate (for light-painting). I have not yet made any light painting or POV equipment myself.

I'm missing the plus sign in the square. Hmmm.