rjsutton

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Join Date: 03-09-2019

Last Activity: 10 Hours Ago

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15 Hours Ago

rjsutton replied to a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

Hi Doddy thanks for above decoupling caps never heard of but googled and think i know where to put them. I dont have any so onwards the output of...

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15 replies | 549 view(s)
1 Day Ago

rjsutton replied to a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

Hi Cropwell mate as soon as i connect pin 3 lm78 to 16 on l293d the voltage drops from 5V to 2.56 and the motor power drops by about 50% unhook pin...

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15 replies | 549 view(s)
1 Day Ago

rjsutton replied to a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

Hi Cropwell mate as soon as i connect pin 3 lm78 to 16 on l293d the voltage drops from 5V to 2.56 and the motor power drops by about 50% unhook pin...

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15 replies | 549 view(s)
2 Days Ago

rjsutton replied to a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

Hi thanks Doddy the motor is rated mA: 120 Stall mA: 200 so dont think is very high so im not worrying about heatsink ( am i correct?

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15 replies | 549 view(s)
3 Days Ago

rjsutton replied to a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

Thanks very much so im actually switching 5 v thru the switch but the output to motor 11 14 is the 7.8V ? think ive got it now

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15 replies | 549 view(s)
3 Days Ago

rjsutton replied to a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

Hi so as drawn now OR does the feed go straight to 8 and no feed to 9 ? if so does the common power for switches come off pin 9 or am i wrong again....

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15 replies | 549 view(s)
3 Days Ago

rjsutton replied to a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

Hi thanks assume the lm7805 can just come off the end of the main feed ( going to vcc2pin 8) so betweem 8 and 16 or does it need dedicated feed?...

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15 replies | 549 view(s)
3 Days Ago

rjsutton started a thread L293D used to reverse motor direction 7.8 vdc in Motor Drivers & Controllers

I have a setup that uses 2 x 18650 3.7V 4000Mah batteries in series ( producing 7.8Vdc. Im trying to control a 6-9V dc miniature motor with 2 buttons...

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15 replies | 549 view(s)