I have 12 5940's driving 64 rgb led's all ran by an Arduino Uno.. The colors are ordered blue, green and red. When I pulse the blue and green it works fine. When I pulse the red, I get flickering from the other colors on the last six chips, and on the…
Other Parts Discussed in Thread: TLC5940 Dear,
I combined the TLC5940 with my MCU (nuvoton NUC123) trying to control servo motor; however, there are some problems in the duty of PWM signal. I can’t adjust the right duty even the trend seemed correct. I…
Other Parts Discussed in Thread: TLC5940 how much should the V_led exceed the forward voltage of the led?
Does the TLC need some control reserve?
I tried to figure it out with the datasheet but i could not found it.
with best regards,
René
Hi Kazuya, thank you for the reply. I have looked into this further. I'm using a PIC microcontroller running at 10 MIPS, typical of the inexpensive microcontrollers the TLC5940/1 is designed to operate with.
The GSCLK for the TLC5940 comes from an…
Other Parts Discussed in Thread: TLC5940 I'm starting to work with the TLC5940 for a little project I have in mind.
I'm gathering all the parts I need to start playing with them on a breadboard, however, I'm not entirely sure what I need for cascading…
Other Parts Discussed in Thread: TLC5940 , TLC5948A Dear TI team and others,
My question is regarding optimizing the current draw of the TLC5940, used as an LED driver in our application.
Our setup: In our product design, we are using the TLC5940 (QFN footprint…
Other Parts Discussed in Thread: TLC5940 , TLC59461 I have 2 TLC5940 connected in series, with I REF of 2K ohms so that each of the output channels sinks ~20mA. I am powering the TLC5940's (but not the attached LED's), via an Arduino project board connected…
Hello,
I have several related questions regarding setting the Dot Correction registers.
1. From the datasheet, I understand that the "default" Dot Correction values in the EEPROM are 3fh (all ones), for each of the 16 outputs. Does the term "default"…
Hi John! I have build an 80 channel (5 TLC5940 daisy chained), p channel Mosfet power driver, using the IRF9540 mosfets. Everything seem´s to be ok, no TLC heated until last less than a minute , one began to heat like grilling bacon. In total, the…
Other Parts Discussed in Thread: TLC5940 I have 3 TLC5940's connected together and different channels on the drivers keep dieing.
I noticed that those channels who don't respond (to being told to turn off) are shorted to GND are are therefore always…