Very Announcement Today, we are pissing ourselves with excitement announcing the dbutton, a Share-on-Steemit button for use on sites all over the interwebs and beyond. As all self-respecting social media

Shared from: Genealogy research in The Netherlands Genealogical information mainly, but not only, from the west of The Netherlands: the Alblasserwaard, the Vijfherenlanden, the province of Utrecht, and

Shared from: Using a solar panel for USB charging A simple way to make a solar USB charger Not efficient, but it does work. Have a look!

Shared from: Knight Rider scanner for model cars A small design driving six LEDs. Speed is adjustable. Have a look!

Shared from: A small FM transmitter A design for an SMD FM transmitter. With schematic. Have a look!

Shared from: Making PCBs: Seven Easy Steps A short description of how to make your own PCBs. Want to try? Have a look!

Shared from: A simple step-up converter How to go from one DC voltage to another. Going from 6V to 12V; useful in very old cars. Have a look!

Shared from: Playing with an Arduino and sensors Getting an Arduino, gyros, accelerometers, and code to work together. First attempts at stabilising a helicopter. Have a look!

Shared from: Funny battery lamp For getting confused when you change the battery. Batteries included. Have a look!

Shared from: Solar FePO4-based battery charger For keeping your camera and phone charged off the beaten track. With USB charger output. Have a look!

Shared from: Solar SLA battery charger A design for an (analog) lead-acid battery charger. With schematic and explanation. Have a look!