Hi and can I just say this site is amazing! I cant believe I didnt find it earlier.
Im Daryl a 22 year old Audio and Video Engineering undergraduate who has a problem with a project of mine.
For my third year TDP(team design project) we have been asked to do some film making. I have been assigned to be in charge of the lighting which has been a lot of fun and I have learned a lot from this module.
I was asked to build an LED light which consisted of 50 LED's 25 of one type and 25 of another. The reason for doing this is when you shoot someones face, depending on the light they are being filmed under conveys certain moods etc.
Anyway back to the problem. I have a microcontroller that I have producing a PWM output signal at 300mV on an oscilloscope. So I am moving onto a prototype to test the correct frequency and duty cycle of the PWM with actual LED's instead of the oscilloscope. I already have programmed the microcontroller to change the duty cycle when 2 buttons are pressed, 1 to decrease and another to increase the duty cycle.
Im confused what the best method for amplifying this small signal (300mV) to power say 12 LED's for testing and 25 for the final light.
At the moment the microcontroller is mounted on a demo board provided by the university. The PSU I have a schematic for which was provided by the university and I have all the data sheets provided for the microcontroller and the demo board.
Im Daryl a 22 year old Audio and Video Engineering undergraduate who has a problem with a project of mine.
For my third year TDP(team design project) we have been asked to do some film making. I have been assigned to be in charge of the lighting which has been a lot of fun and I have learned a lot from this module.
I was asked to build an LED light which consisted of 50 LED's 25 of one type and 25 of another. The reason for doing this is when you shoot someones face, depending on the light they are being filmed under conveys certain moods etc.
Anyway back to the problem. I have a microcontroller that I have producing a PWM output signal at 300mV on an oscilloscope. So I am moving onto a prototype to test the correct frequency and duty cycle of the PWM with actual LED's instead of the oscilloscope. I already have programmed the microcontroller to change the duty cycle when 2 buttons are pressed, 1 to decrease and another to increase the duty cycle.
Im confused what the best method for amplifying this small signal (300mV) to power say 12 LED's for testing and 25 for the final light.
At the moment the microcontroller is mounted on a demo board provided by the university. The PSU I have a schematic for which was provided by the university and I have all the data sheets provided for the microcontroller and the demo board.