5v analog with saber tooth 2\25 motor control

Troubleshooting
1

is there a way to get 5v analog out of any of the out pins of the particle photon so I can control a saber tooth 2/25 motor control?

2

No, the output of all the gpio pins is 3.3 volts. You could use a level shifter like the 74AHCT125 to get the 5 volts you need.

3

As I understand this is a logic level shifter not an analog amplifier - the latter would be required to get the 3.3V analog signal ramped up to 5V.

But there would be other means than just amplifying the 3.3V DAC output of a Particle device.

  • PWM a 5V transistor with low pass filter
  • external DAC (like MCP4725)
  • use a different communication feature of the Sabertooth controler (e.g. serial)
3 Likes
4

I assumed, since the op wrote “any of the pins”, that they were meaning PWM, not true analog. I was answering from my phone on a very slow connection, so I didn’t look up that specific controller.

4 Likes
5

ok… can you give me some more information on getting the sabor tooth to work whith the photon I am not having any luck at all…

6

What have you tried?
Have you read up on the serial protocol of the Sabertooth?
Datasheets and suplemental documentation should always be the first instance of inquiry.