Fixing a faulty Roomba charger

Our Roomba (a old 533 pet series) stopped charging after a particularly nasty lightning storm and blackout – some initial testing, and guess work, narrowed the problem down to the charger and thankfully not the Roomba itself.

Hosted on the Cloud(flare)

I’m a bit of a Cloudflare fangirl. All my sites, personal and business, have sat behind Cloudflare for a long time. I tend to convert any new clients or employers to using them for DNS at the very least.

How to rotate the WaveShare WS170120 HDMI/USB touchscreen on a Raspberry Pi 4

We’re developing a new product at work, and used a WaveShare WS170120 7″ HDMI/USB touchscreen and a Raspberry Pi 4 during the control prototyping. The 7″ touchscreen had to be rotated by 90 degrees, and working out how to do this wasn’t that straightforward, so I thought I’d publish it just in case it helps… Continue reading How to rotate the WaveShare WS170120 HDMI/USB touchscreen on a Raspberry Pi 4