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…
Show ‘n’ tell: eneloop 4th generation panasonic nimh cells
An absolutely nerdy show 'n' tell of my new 4th generation Panasonic eneloop Nickel Metal Hydride AA cells. Let's now…
Postbag: #30 – happy christmas on an ics rgb led matrix
Playing with an 8x8 RGB LED matrix module to get me in the mood for Christmas. Kindly supplied by icstation.com.…
Postbag #29: fun re-wiring a 555 and 4017 led module
Just one item in today's postbag - the most fun I've had for £2.50 in a long time. This 555…
1-day project: build your own arduino uno for $5
Help support Julian's Arduino videos on Patreon: https://www.patreon.com/julian256 Clones of the popular Arduino Uno are now so cheap, it's difficult…
Tested: display libraries – adafruit, u8glib, homebrew code
Comparison of 3 different techniques for driving an SPI OLED display. The Adafruit SSD1306 library, the u8glib and some code…
Led tutorial: light a 100w led from 12v – simple cheap
How to power a 100W LED from a 12v power source. A second hand heatsink and fan from an old…
Postbag #28: arduino special – cheap uno, diy duinos, usb tiny isp
Update: The USBasp error message is documented here: http://blog.lincomatic.com/?p=1480 It appears to be a minor irritant rather than an error…
2nd look: turnigy accucell-8150 150w 7a balance charger
My second look at the Turnigy Accucell 8150 balance charger, this time focusing on charging multiple lithium cells in series.…