|
|
 | | Test.
|
| Test (28 years ago, 26-Nov-96, to lugnet.robotics.handyboard)
| | | | | Re: Polariod Sonar
|
| (...) Although I teach a digital electronics class based on the 74xx series, I'm certainly no expert, but here goes anyway... TTLs seem to have a very low ability to drive anything but minimal loads. Look up "drivers" in the TTL Data Book. They (...) (28 years ago, 24-Nov-96, to lugnet.robotics.handyboard)
| | | | | subscribe
|
| subscribe thanks. (a spare time Rug Warrior 'user') (28 years ago, 24-Nov-96, to lugnet.robotics.handyboard)
| | | | | Re: Polaroid & Handyboard
|
| I hooked up the sonar to the +5 and GND on the HB and it wroked fine. I used TIC3 for Echo and pin 9 of 2nd Motor driver for INIT and GND for BINH I also hooked up the sonar power leads to the 9.6V unregulated motor power header! It also worked! (...) (28 years ago, 24-Nov-96, to lugnet.robotics.handyboard)
| | | | | Polariod Sonar
|
| Hi, I'm stuck. I'm trying to use TTL output of 74 series IC's to signal to INIT. I can't get it to work properly. Here's the deal. When I touch INIT to the 5V bus, the transducer "chirps". But when I touch INIT to a high level TTL output, it doesn't (...) (28 years ago, 23-Nov-96, to lugnet.robotics.handyboard)
|
|
