Scargill's Tech Blog

I’m going to touch VERY briefly on two boards I just picked up from Seeed Studio.

A small package of Seeed XIAO ESP32 boards has arrived here in sunny Galera for me, and the first thing that caught my eye was the provision for a battery and an external RF antenna.

A quick blog to go along with the video I’ve made on the new Sonoff SNZB-02UL sensor – released September 24, 2026.

Ok, Before anyone says anything, I received a package in the post this morning that I’ve been waiting for for quite some time from Wrap-it-Solutions.

In mid-August this year I took an interest in the Radxa Linkr KVM – and all I have to say on that is that it works perfectly over WiFi, offering KVM features in a slim stick.

I’ve been writing about thermostat designs since 2016, at which point I was making my own because I found the thermostats on the market somewhat lacking, especially if you wanted to provide remote access including guest and holiday rental access.

No, Pete’s not regressing to a bygone age.

Way back in February 2025, I was sent a pair of Reyax LoRa modules to try out and review.

Xiaomi Mi AC2100 – back from the almost-dead This formerly rather tired-looking old Xiaomi Mi AC2100 router has just had a bit of a resurrection.

If Like me, you have a home with more than one router, This may interest you.

Without really realizing it, over the last couple of months I’ve become pretty much addicted to ESPHome.

Years ago (2021) I ended up with a pair of rather different little M5Stack units — an M5 Tough and an M5Stack Core2/M2 — and yesterday decided they deserved something more interesting to do than sit around running demonstration software.

The Glassview is the latest smart window camera from Sonoff, and looking at it, it seems to be a fairly ordinary USB-powered WiFi IP camera.

Sorry – I couldn’t resist the snazzy title photo.

This is the latest and hopefully final ever version of my ST7789v-based ESPHome-based BLE Proxy now turned general useful BT/IP tool – is there no stopping me?

The Sonoff TRV Gen2 is a Zigbee thermostatic radiator valve.

I’ve had a couple of these little TTGO T-Display boards sitting around for quite some time.

I’m calling the game LED Ladder.

Just a few days ago this little project was the poor brother of the two projects that succeed it.

I won’t go through the entire workings of my latest BLE Scanner and bluetooth proxy here.

Some years ago, I owned the original LattePanda and at the start of 2026, the company sent me their new(ish) LattePanda IOTA as well as optional add-on extensions including a UPS board (minus batteries).

This is an odd one.

Described as a smart motion sensor with instant response and long battery life.

I recently received the new Sonoff Zigbee Dongle Plus, primarily sold as a Zigbee coordinator.

This blog entry has ended up as a multi-day job thanks to the reTerminal E Series E1003 10.3″ display being fairly new and information being scattered all over – I’m sure I’ve helped Seeed update their info and so if this interests you, between my final E…

The SNZB-02M is a small round sensor from Sonoff that not only checks temperature and humidity – but also air pressure.