Hello, dear All
I am looking for a way to power on a JestsonTX2 development KIT from J6 Header.
I have tested that it can be powered on by short J& headers.
Does any know how to do that via another single-board computer like Arduino or RB pi ?
Thanks in advance.
Hi, I’m doing the same thing on TX1 board, i have not seen the datasheet of the TX2 but I think it’s the same thing… anyway on J6 jumper you have one pin with 5V and the other connected to the GND.
When you have identified the polarity (an electrical test equipment like multimeter could help you) you can do that by using:
# +----------------+
# | |
# D| |
# +-+ +---+--+
# +------+ +-----+ + | | 5V |
# | DOUT +------> | 220 +----O---------------G| | N-MOS +------+ J6
# +------+ +-----+ | + | | 0V |
# R1 | +-+ +---+--+
# | S| |
# | +------+ | |
# +---+ 220K +---------O----------------+
# +------+ |
# R2 |
# |
# +-+-+
# /////
R1 maybe useful if you use a mosfet with a very large gate capacitance, the digital output pins of most MCUs are current limited already, so this isn’t strictly necessary.
R2 also may be optional but it protects the circuit from a failure of the control signal: in this case R1 pulls the gate charge off and turns the MOSFET off.
You can also change the values of the resistors according to you project.
Hi, it is simple to power on from J6 if the single-board computer has GPIO output, just pulling down to ground will trigger power on.