JohnDough 1 Posted September 14, 2015 Share Posted September 14, 2015 Hi,I want to do a small project, and find it difficult to choose the right version of LaunchPad.I hope I can get some help here.I'm looking for the cheapest LaunchPad which can be used for my project.The project is a metronom - the tool that "beats" (vie click/lights) X times in a second,just like this one: (excpet that the "tap" on my project will be using button, not microphone) I just want to try and do one by myself. The requirements are:1) Internal clock should VERY accurate, with 200 Beats Per Minute.2) Need to controls 3 "7 segment displays"3) Need to control 1 led to indicate the beat4) Use some "piezo speaker" to make the beep, e.g https://www.sparkfun.com/products/79505) Control speed using "rotray encoder". eg https://www.sparkfun.com/products/91176) Should work on 9V batteryI have a lot of experince in in programming (c/c++),but not with embedded systems.Question #1===========Do I need to buy the "real time" version for the timing accuracy ?On the simple "MSP-EXP430G2" it just says "2 16-bit Timers"(http://www.ti.com/ww/en/launchpad/launchpads-msp430-msp-exp430g2.html#tabs) I need a timer that will_not- be affected from the state/voltage of the battery Question #2===========For 3 "7 segment" I need already 21 controls pins,so does it mean that I need some kind "booster pack" ?If you can refer me to the specific model I need that will be great.Thanks a lot for any help !Regards. Quote Link to post Share on other sites
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