Random high voltage module from ebay with schematic
It's always fun to buy random high voltage equipment from vague Chinese sellers on eBay and try and work out…
Ebay 9 million mah power bank teardown with schematic
Isn't it incredible how much battery technology has advanced. This power bank claims to be rated 9 million mAh and…
Updating a 70,000 hour led lamp
I made a video about this glitter lamp eight years ago and didn't realise that this lamp has been running…
Ebay mains voltage touch dimmer – with schematic
Whether you should actually use a generic Chinese touch switch is debatable. They don't seem to fully understand electrical isolation…
Usb rechargeable pir light teardown with schematic
I thought it would be worth taking a look at some more recent versions of these. I've had some older…
Fixing a heater and an apology to my bro
I'm not sure where Ralfy has been storing this heater. The contacts and the plug pins were heavily oxidised. That…
Inside a soviet ionizer from 1990 with schematic
Such an odd thing. Very similar circuitry to a classic needle ioniser, but uses a long linear emitter wire instead.…
Can we fix a high voltage igniter?
During a live stream I was demonstrating this igniter unit and waved it back and forth vigorously to show how…
Lithium cell balancer reverse engineering with schematic
I've never really investigated cell balancing too much, so I got a two cell protection and balancing board to explore.…
Tiny rgbw strobe light teardown with schematic
Although this USB rechargeable strobe is probably intended for bikes, this could also be used as a warning beacon for…