February 7, 2016, 8:09 pm
The builtin real-time clock (RTC) in my Keithley 706 works rather nicely as a clock in my lab when the scanner is not in use. The 7-segment displays are big and clear and they are two dedicated displays for the seconds which comes in quite handy. However the main drawback of this auxiliary clock functionality is that, well, it is not very accurate. It is rather annoying when I need to adjust the clock every couple of days to make sure it remains correct. Continue reading ‘Keithley 706 RTC Upgrade – How to Make Any Clock More Accurate’ »
July 19, 2014, 9:09 pm
DS3232 is an extremely accurate RTC with a guaranteed accuracy of 2.5 ppm (0 °C to 40 °C), which translates into an error of just 80 seconds over the course of a year under the worst case scenario. I had done a few projects using this chip before (you can read about them here). Continue reading ‘DS3232 Clock Frequency Calibration’ »
July 1, 2013, 9:43 am
After I completed the filament driver and the circuit to drive the multiplexed VFD segments, it is time to finish the VFD clock project I had in mind earlier. Continue reading ‘VFD Clock – Putting Everything Together’ »
January 9, 2013, 8:37 pm
I have used DS3232 RTC (real-time clock) in many Arduino based projects before. DS3232 utilizes a temperature compensated oscillator, which makes it far more accurate than devices like DS1307. In this blog post, I will give some code examples on implementing a digital clock using DS3232 and the TI MSP430 Launchpad. Continue reading ‘Interfacing DS3232 RTC With MSP430G2452’ »
September 25, 2010, 8:29 pm
There is a popular data logger shield out there designed for Arduino using a DS1307 real time clock chip. And that design makes data logging extremely easy if an Arduino board is used. Continue reading ‘I2C Data Logger Using ATmega328p and DS3232 – I’ »