https://stream.echo6.co/videos/watch/4643674f-e115-4ac7-aa4a-256bee0180da Although designed for flashing LED based vehicle lights, this module can also be used to flash other 12V loads. I've looked at one of these modules before and the circuitry is similar, but whereas I mistakenly thought that the small unmarked transistor was a programmable unijunction type, this one uses a marked PNP transistor. The circuitry is quite clever in that it has used the main switching MOSFET as a part of the timing circuitry. That gives the circuit a very low component count. Note that for some LED loads you may need a 1000 ohm resistor across the load to give the flasher its full voltage for stable timing. The single electrolytic capacitor on the PCB can be changed for a higher value for a slower flashing range. If you want one of these very cheap modules to experiment with, then 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/_c3bO2Iz9 Cost should be about £2 or less. Supporting the channel with a dollar or two on Patreon helps keep it independent of YouTube's quirks, avoids intrusive mid-video adverts, gives early access, bonus footage and regular quiet Patreon live streams. https://www.patreon.com/bigclive Alternatively, for a single coffee contribution you can use PayPal:- https://www.paypal.com/paypalme/bigclive #ElectronicsCreators Wed, 15 Apr 2026 11:05:25 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/4643674f-e115-4ac7-aa4a-256bee0180da All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.