April 22 - Kickstarter: UDOO Neo
Resistor Photo ID
Here is a handy tool to have on your iPhone! Especially for those who are color blind and cant identify the color bands on resistors. It's called "Resistor Photo ID" and it was developed by Rich Olson of NothingLabs.
Using resistor ID is easy:
- Take a photo of a 4-band resistor using the app
- Drag the numbered bars over the corresponding resistor bands
- Resistor Photo ID provides you with the resistance and tolerance of the resistor!
If for any reason Resistor Photo ID doesn't detect the correct color for a band - you can easily override it.
Wi-Fi on the Big Wire
Classic embedded Wi-Fi web servers based on microcontrollers have met their match. The ACKme Numbat stuffs an ARM microprocessor, Wi-Fi radio, TCP/IP stack, UART, real time clock, multiple GPIO pins, analog-to-digital converters, PWM generators, SPI portals, 1 MB of serial Flash, and an I2C interface into a 0.8” x 0.6” x 0.11” SMT package. All you need is a PC serial port and a terminal emulator to gain access to the Numbat’s rich set of resources. Read More...
Serial I/O Data Interfaces: Part 2
Get familiar with the high speed gigabit serial interfaces that dominate I/O today since we all use at least one of these regularly. Read More...
Move up in frequency to the oscillators which make the signals that drive the ham’s wireless world. Read More...
PICAXE-PC Serial Communication — Part 1
We’ll continue our experiments with the Prolific cable, but this time focus on sending data back and forth between a PICAXE processor and a PC. Read More...
Reader Questions Answered Here (05.2015)
A question on op-amp accuracy, getting certified, and some tips on batteries. Read More...
March 31 - The eBay Treasure Hunt
November 26 - Anwser for D Cell or Gell Cell Adapter for Nikon Cameras Use Nikon’s EP5 power supply connector. No camera modification or battery door removal is required. Now the remaining trick is…
August 23 - Anwser for Laser Power Supply Too bad I didn’t read your entry just a little more closely… I have not seen such a powerful diode…
January 28 - Anwser for Traffic Detector Robert beat me to the punch regarding the Doppler. My thought was to install both a Doppler sensor (like a…
November 07 - Tesla Coil Theory Thank’s for answering my question Bart, I was alway’s fascinated with Nikola Tesla inventions and what he did in Colorado…
August 02 - Diode Selection On Multimeter Thanks a lot! GFP.