ausserirdischesindgesund
Member
Hello, beginner question here:
I want to supply several boards, among them two with a Teensy 2.0 in a socket, with some common, reasonably dimensioned 5V power supply,
probably some 5A/5V Meanwell device. I don't know the full power draw yet, but I suppose it is above the 500mA that work painlessly over USB.
Probably somewhere around 2A at 5V.
I will cut the 5V pad on the teensy, to split up USB power and the rest (USB will go to a Raspberry Pi probably powered from the same 5V power
supply, so don't know if this is strictly necessary, I just have to access the serial port from there).
Will I need some bypassing capacitors as soon as I cut the pad, so that the Teensy power stays stable, like most people recommend for logic chips?
What would be the best way to power 1 Raspberry Pi, 2 Teensy 2.0 (one draws quite a bit of power for LEDs, the other less so) and some
components linked to the Teensies from a common 5V PS? I don't think I can feed enough power over the USB, even less so from a Raspberry Pi as the USB Host.
If I cut the pad, connecting a good regulated PS to the GND and 5V pins of the Teensy probably most sensible, or am I wrong here? Also: Are
the usual Meanwell Power supplies (in perforated enclosure or plastic brick) good enough to power the Teensies in the long run without
frying them, or will I have to add another regulator?
TIA
Ralph
I want to supply several boards, among them two with a Teensy 2.0 in a socket, with some common, reasonably dimensioned 5V power supply,
probably some 5A/5V Meanwell device. I don't know the full power draw yet, but I suppose it is above the 500mA that work painlessly over USB.
Probably somewhere around 2A at 5V.
I will cut the 5V pad on the teensy, to split up USB power and the rest (USB will go to a Raspberry Pi probably powered from the same 5V power
supply, so don't know if this is strictly necessary, I just have to access the serial port from there).
Will I need some bypassing capacitors as soon as I cut the pad, so that the Teensy power stays stable, like most people recommend for logic chips?
What would be the best way to power 1 Raspberry Pi, 2 Teensy 2.0 (one draws quite a bit of power for LEDs, the other less so) and some
components linked to the Teensies from a common 5V PS? I don't think I can feed enough power over the USB, even less so from a Raspberry Pi as the USB Host.
If I cut the pad, connecting a good regulated PS to the GND and 5V pins of the Teensy probably most sensible, or am I wrong here? Also: Are
the usual Meanwell Power supplies (in perforated enclosure or plastic brick) good enough to power the Teensies in the long run without
frying them, or will I have to add another regulator?
TIA
Ralph