mfpek 0 Posted December 13, 2014 Share Posted December 13, 2014 @@RobG i get pwm signals on led now and buttons also work. i am gonna try it with the motor. Quote Link to post Share on other sites
mfpek 0 Posted December 13, 2014 Share Posted December 13, 2014 @@RobG sir it works like a charm. i really owe you a big time. if we were in same country, i would like to take you to a fancy dinner What's your job by the way? Is this just a hobby for you or what if i may ask? Quote Link to post Share on other sites
RobG 1,892 Posted December 14, 2014 Author Share Posted December 14, 2014 Good to hear it works and I hope you got something out of this. You should now try to move switch conditionals to ISR. What you have works, but this is not the best solution. This is just my hobby, but software development is what I do for living. Quote Link to post Share on other sites
mfpek 0 Posted December 14, 2014 Share Posted December 14, 2014 @@RobG i am just trying to get through this project right now, but i am really starting to understand how embedded systems work. i moved on to next step of the project - PCB of the circuit. before i started to draw it on isis-ares, i tried to see if it will work while msp430 chip is on breadboard. i put to msp430's pin 1 to vcc, pin 20 to ground on board and made other pin assigments with l293d. But as always it didn't work on first try. Any special requirements for this application that you think i don't know? Quote Link to post Share on other sites
mfpek 0 Posted December 14, 2014 Share Posted December 14, 2014 @@RobG i can control pwm signal at enable1 pin with buttons but no input or output voltages whatsoever. i think it's related to the cables or board. Quote Link to post Share on other sites
RobG 1,892 Posted December 15, 2014 Author Share Posted December 15, 2014 RST pin is floating, you should pull it up to Vcc (directly or through 47k resistor. If you want to do in circuit programming, add 47k resistor between Vcc and RST and 1nF capacitor between RST and GND.) Also, add 0.1uF bypass capacitors next to Vcc pins of both chips or MSP at least. Quote Link to post Share on other sites
mfpek 0 Posted December 15, 2014 Share Posted December 15, 2014 @@RobG i drove the pcb layout on ares. i added layout files to attechments (the site doesn't let me uploud ares file). Now the deal is how can i take a output of schema that fits real measurements of peripherals? i am trying extending or narrowing the images but it doesn't seem like to be working. Quote Link to post Share on other sites
mfpek 0 Posted December 15, 2014 Share Posted December 15, 2014 @@RobG i drove the pcb layout on ares. i added layout files to attechments (the site doesn't let me uploud ares file). Now the deal is how can i take a output of schema that fits real measurements of peripherals? i am trying extending or narrowing the images but it doesn't seem like gonna work. project ares pdf (Page 1).bmp with peripherals (Page 1).bmp Quote Link to post Share on other sites
RobG 1,892 Posted December 15, 2014 Author Share Posted December 15, 2014 You have to keep 0.1uF as close as possible to Vcc pin. Something like this with peripherals.bmp mfpek 1 Quote Link to post Share on other sites
mfpek 0 Posted December 31, 2014 Share Posted December 31, 2014 @@RobG i stucked again i've done the pcb. at the beginning it didn't work at all. after some adjusments, i got voltage out of motor pins but a motor doesn't run with it. there is voltage out of it but no current. how is that even possible? is pcb broke? any idea? l293d is functional by the way. Quote Link to post Share on other sites
Jake 24 Posted January 1, 2015 Share Posted January 1, 2015 subscribed...........on the to do list after some LED projects are knocked out! Quote Link to post Share on other sites
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