View Full Version : NEX Robotics Programmer Board and L293D interfacing problem

03-09-2010, 06:33 PM
I attended a workshop organised by NEX Robotics http://www.nex-robotics.com/ and they gave us their basic programmer board of this type

The problem is that when I connect a L293DNE to it and try to program it, the signal level is too low to drive the L293D. It works above 4.5 volts, but the voltage available after the regulator transistor LM7805C is about 2 Volts.

So should I put a general purpose transistor for amplification in between these two or is there some other problem.

IC is working properly otherwise, and the program is switching on ports as desired.(Checked through LEDs).

It is a part of my minor project and is urgent.

03-09-2010, 06:46 PM
Why dont you get in touch with Nex i think they are completely capable of this , since you have already paid them ... why not ask for support.

03-09-2010, 09:21 PM
He may not have received the support, that is why he is anonyomoussomeone

03-15-2010, 12:29 PM
I think he got it working. Saw his post on other forum. He was probably trying to drive 7805 with a 5V power supply! He figured it out anyways :rolleyes:


03-15-2010, 12:51 PM
Lol 7805 & 5v....