MichaelMeissner
Senior Member+
I'm probably missing something simple. Does anybody have a wiring diagram of how to set up the Adafruit 8-channel bi-directional Logic Level Converter - TXB0108? Here is the url for it: http://www.adafruit.com/products/395.
On the Teensy 3.0, I hooked the VCCB pin on the logic converter to the VIN pin on the Teensy, which gives me 5 volts. I hooked up the VCCA pin on the logic converter to the Teensy standard 3.3 voltage pin, and I hooked up the logic converter ground to Teensy's ground. I've tried connecting 5v power (from Teensy's VIN) to one of the B pins (say B3) and then connecting a LED or my volt meter to the corresponding A pin (A3), and from there to ground, on the theory that the logic converter should convert from 5v to 3.3v. I didn't get anything. Then I tried it the other way around, and connected a 3.3v line to say A4, and then I connected B4 to a LED and then ground, and again I didn't get anything. Now, I didn't connect the OE pin. Should I connect it to ground? Or maybe tie it to one of the power pins (VCCB or VCCA)?
On the Teensy 3.0, I hooked the VCCB pin on the logic converter to the VIN pin on the Teensy, which gives me 5 volts. I hooked up the VCCA pin on the logic converter to the Teensy standard 3.3 voltage pin, and I hooked up the logic converter ground to Teensy's ground. I've tried connecting 5v power (from Teensy's VIN) to one of the B pins (say B3) and then connecting a LED or my volt meter to the corresponding A pin (A3), and from there to ground, on the theory that the logic converter should convert from 5v to 3.3v. I didn't get anything. Then I tried it the other way around, and connected a 3.3v line to say A4, and then I connected B4 to a LED and then ground, and again I didn't get anything. Now, I didn't connect the OE pin. Should I connect it to ground? Or maybe tie it to one of the power pins (VCCB or VCCA)?