Postbag: #32 a – servos tester, db9, antenna, usb buck, relay
A selection of eBay items from China. Check out what I found. 1Pcs Electronic Lucky Rotary Suite DIY Kits Production…
Invention: dual complementary opto-isolator dcoi logic
DCOI - a new family of logic gates using opto-isolators. And the green and red LEDs aren't optional, they're an…
Testing led flashlights on a foggy night
Intended as a series of shots for separate videos, I couldn't resist stitching these together, so there is a bit…
First look: headway lithium iron phosphate lifepo4 10ah cells
First look and a brief play with the Headway 10Ah LiFePo4 cells which will replace a couple of failing lead-acid…
Postbag: #31 – alice special: pca9685, tlc5615, max7219
A selection of items from one of my favourite eBay sellers - Alice1101983 aka TxHang Electronics Ltd. Check out USB…