Secrets of the pwm5 – #4 inaccuracy
Finding and resolving the cause of inaccuracy in the charge controller's set point voltage.
Blooper teaser: secrets of the pwm5 – #4 inaccuracy
Experimental blooper/teaser video. I've tried Julian's Shorts videos, but they were never very short. I've also tried a purpose filmed…
Teardown: duracell cef23 battery charger/usb powerbank
Teardown of a classic 4-slot battery charger made by Duracell. This innovative charger also works as a USB powerbank supplying…
Electronic kit build: $5 metal detector treasure locator
Kit build of a $5 electronic metal detector. The unit works, but only when metal objects are placed very close…
Update: dream happy birthday music kit – fixed!
Bad circuit design was holding the music chip in a reset state. With the addition of a 10k resistor, the…
Julian’s postbox: #52 – electronics kits and pre-built modules
Electronic kits and pre-built modules from China. eBay links below: Check out CD4060 Dream Light Birthday Gift Suite DIY Kit…