The Hammer
- Sep 17, 2013
- 164
- Joined
- Sep 17, 2013
- Messages
- 164
I'm building an LED strip PWM dimming setup for a new bed frame I've created. Problem is... After all the painstaking work I've put into it the MOSFETs I've used on the low side seem to be going BONKERS!
I've hooked the Gate directly to the ATTINY861-PU running off a hacked USB wall charger (750mA) I'm using which I've read is perfectly fine, hooked the "-" side of the MOSFET to Drain, and hooked up the Source to the power supply (stable 12.16V as read by my garbage multimeter), and "+"straight through. I can confirm that everything has continuity, and is operating fine EXCEPT the power MOSFET..
I'm using IRLB8721PBF that I ordered off Digi-Key. The LED flickering (when Drain and Source are shorted, no flickering, so it's not the 12V supply), and do not respond to voltage change 0V-5V on the Gate. When I touch the Gate with my finger the LEDs glow solid! They also act all sorts of odd with different types of flickering depending on how I remove my finger from the Gate..
WHAT IS GOING ON?!?
I've hooked the Gate directly to the ATTINY861-PU running off a hacked USB wall charger (750mA) I'm using which I've read is perfectly fine, hooked the "-" side of the MOSFET to Drain, and hooked up the Source to the power supply (stable 12.16V as read by my garbage multimeter), and "+"straight through. I can confirm that everything has continuity, and is operating fine EXCEPT the power MOSFET..
I'm using IRLB8721PBF that I ordered off Digi-Key. The LED flickering (when Drain and Source are shorted, no flickering, so it's not the 12V supply), and do not respond to voltage change 0V-5V on the Gate. When I touch the Gate with my finger the LEDs glow solid! They also act all sorts of odd with different types of flickering depending on how I remove my finger from the Gate..
WHAT IS GOING ON?!?