Uploaded October 2025 | Updated September 2026, 2 weeks ago
This little torch is designed to plug into your phone's charging port and be powered from the phone.
The main advantage of this is that it provides a more directional beam than your phone's camera flash, and will also operate with the phone off.
I wasn't expecting much circuitry in this. Just a little control chip, transistor and resistor to limit current through the LED. But I was wrong. It has a complex two transistor toggle switch and a current regulated LED driver.
The complex circuit and tiny PCB made this a very difficult device to reverse engineer.
Here's a link to the item on AliExpress (not a sponsor).
This is an affiliate link, but that will not affect the price you pay.
https://s.click.aliexpress.com/e/_c3rVIFRb
It should typically cost less than £2.
If you enjoy my videos and wish to support the channel to keep it independent, you can do so by supporting me on Patreon. I release videos without adverts for critique and feedback on Patreon as soon as they have been made. I also release Patreon-only backstage videos when I'm working on shows.
patreon.com/bigclive
Alternatively, for a single contribution you can use PayPal:-
paypal.com/paypalme/bigclive
#ElectronicsCreators
This little torch is designed to plug into your phone's charging port and be powered from the phone.
The main advantage of this is that it provides a more directional beam than your phone's camera flash, and will also operate with the phone off.
I wasn't expecting much circuitry in this. Just a little control chip, transistor and resistor to limit current through the LED. But I was wrong. It has a complex two transistor toggle switch and a current regulated LED driver.
The complex circuit and tiny PCB made this a very difficult device to reverse engineer.
Here's a link to the item on AliExpress (not a sponsor).
This is an affiliate link, but that will not affect the price you pay.
https://s.click.aliexpress.com/e/_c3rVIFRb
It should typically cost less than £2.
If you enjoy my videos and wish to support the channel to keep it independent, you can do so by supporting me on Patreon. I release videos without adverts for critique and feedback on Patreon as soon as they have been made. I also release Patreon-only backstage videos when I'm working on shows.
patreon.com/bigclive
Alternatively, for a single contribution you can use PayPal:-
paypal.com/paypalme/bigclive
#ElectronicsCreators
