1-day project: $10 diy arduino hygrometer si7021 oled
Build an Arduino-based humidity and temperature meter in just one day and for just $10. This design uses the Si7021…
50p wilko led tea lights use pwm and prng
Bought these in the Halloween section at Wilko. Just had to wire one up to my oscilloscope!
Julian’s postbag: #72 – beautiful multi-colour flashing leds
eBay Links: DC 5V 50PCS WS2811 RGB Full Color 12mm Pixels digital Addressable LED String FE http://www.ebay.com/itm/-/331735774908 or search eBay…
Teardown: lumintop 18650 lithium cell with usb socket
Batteries are evolving! Now they have a small hole in them, where you shove in a micro USB plug. But…
Playing with: camstudio and mplab x ide
My least favourite pass time - trying to learn software which is overwhelmingly complex and full of bugs! Joy :/
A buck converter too far – dc power transmission project fail
I found a neat-looking buck converter on eBay with a 60V maximum input voltage and a 30V maximum output voltage.…
Banggood 30w 12v 36-cell semi-flexible solar panel
Julian attempts to test the output of this semi-flexible solar panel, but instead ends up getting cross and shouting at…
Julian’s logic: 555 logic functions
Looking at the logical (non-timer) functions of the 555. http://www.pmonta.com/555-contest/logic/logic.html
Update: pic development board and sleeping beauty
The PIC12F675 Demo Board has a few issues. One of these, related to the 13v programming voltage requires a harware…