Posted on March 16th, 2015 30 comments
Dave looks at his 3kW home solar power system after being in operation for 18 months and analyses the results.
How much energy was produced?
How does net and gross metering work?
What is the payback period?
What is solar insolation?
The 3kW system uses 12 x 250W LG MonoX panels
and an SMA Sunnyboy 3000TL inverter.
Uploading data to PVoutput.org using PVbeancounter and bluetooth from the Sunnyboy inverter.
PVoutput.org data HERE
Posted on March 13th, 2015 5 comments
What’s inside Keysight’s new 34470A 7 1/2 digit Truevolt bench multimeter?
What are the PCB changes from the 34461A?
What voltage reference does it use to get 16ppm nominal accuracy?
High resolution teardown photos:
Posted on March 11th, 2015 12 comments
GPS based Back To The Future speedometer display from Firmtec
Manual SMD Pick & Place reeling tray on Kickstarter
Cypress Semiconductor PSoC Bluetooth Low Energy demo kit
PCB Backlit calendar
Geoaching waypoint altitude decoder
Who do strain gauges work?
Vintage components from the cold war eastern bloc
Radio Shack T-Shits
Posted on March 5th, 2015 4 comments
What’s inside a 2000 vintage Globalstar GSP1600 Tri-Band Satellite Phone?
Behold the Erectile Antenna, a helical designed extending antenna.
Thanks to: Electronics Responsible Recyclers
Analog Devices DSP
Intel 386EX Embedded Processor
Posted on March 3rd, 2015 7 comments
Dave opens his mail.
Chip Whisperer KickStarter
Supermicro Xeon Server Motherboard
PICop II PIC Development board
Automatic Voltage Regulator for an alternator.