Zeropoint42
Member
Hey all! I have a teensy 3.2 on top of the octows2811 adapter running 1288 neopixels. Both the chip on the teensy and the ethernet output ports on the Octo are getting supper hot. I've had it running for a couple weekends and it hasn't fried but it shouldn't be getting that hot right? I had it wired with 18ga from the 5v psu but the ground wire was getting super hot as well. So I re-wired everything with two +5v and two grounds both at 14ga now. All the wires are now cooler. Should be more than enough to power the leds and the teensy. I have the grounds screwed into the grounding pads on the Octo. The two 5v lines I have running into a cap bank, 4000uF per 5v line, 8000UF total. All grounds of caps connected to single ground, connected to psu ground and Octo ground. From one of the 5v lines I have a usb cable that powers the teensy, since the voltage regulator steps down the power from the usb input. The neopixels are powered from the cap bank and the data and ground are from the Cat6 cables. I can upload photos if unclear.
PSU I'm using: https://www.amazon.com/gp/product/B075V6YBBT/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
Should I run a parallel ground wire from the leds to the psu so all the current isn't going straight into the Octo? I also read that I may need to cut the trace from the Vin & VUSB?
I have the usb wired to an external port so I can program without going into the enclosure and unplugging the usb on the teensy every time. Wired up a switch to cut power from the psu so it doesn't feed into the computers usb cable while I'm programming.
Would it be better to wire the 5v straight to the Vin and cut the Vin/VUSB trace and add a diode so I can plug in and program without back feeding the psu power to my computer?
PSU I'm using: https://www.amazon.com/gp/product/B075V6YBBT/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
Should I run a parallel ground wire from the leds to the psu so all the current isn't going straight into the Octo? I also read that I may need to cut the trace from the Vin & VUSB?
I have the usb wired to an external port so I can program without going into the enclosure and unplugging the usb on the teensy every time. Wired up a switch to cut power from the psu so it doesn't feed into the computers usb cable while I'm programming.
Would it be better to wire the 5v straight to the Vin and cut the Vin/VUSB trace and add a diode so I can plug in and program without back feeding the psu power to my computer?