Hi I am using the Jetson AGX Orin Dev Kit.
I want to give an Analog Output from the Orin, which pin can be set as Analog Output from the 40-pin header?
If there is no such possibility, what are my options and which DAC module would you suggest which would be safe for use with Orin.
Hi paul.anuj1,
What’s your Jetpack version in use?
What’s your use case for Analog Output?
Do you want to control the GPIO or output some kind of data stream?
Package: nvidia-jetpack
Version: 5.1.2-b104
Architecture: arm64
I want to use the AGX Orin Devkit to drive a steering used in a Driver-In-Loop setup.
The Orin is supposed to drive the Steering Motor Circuit.
The motor circuit requires PWM and DIR as input.
Previously we were using a MicroAutoBox whose PWM output was a digital output: 0-100% corresponding to 0-5V, and direction was an analog output: LOW or HIGH corresponidng to 0-10V.
I have been able to setup the PWM pin as output ranging from 0-3.3V, but there is no change in the direction in which the steering rotates. I thought that if I am able to send an analog output from Orin maybe it will work.
Hi, analog output is not supported on Orin dev kit. We have no recommendation on DAC module.
Does the Jetson AGX Orin Devkit have internal pull-up or pull-down resistors? If yes how can I configure a pin as internal pull-down? Can I do it with the jetson-gpio.py menu?
You can configure that in the Orin pinmux sheet in DLC.
I am unable to open this link
As already known the 40 pin header does not have any analog capabilities.
Suggestion: Microchip MCP4728
This chip can be operated on 3.3V and 5V, but on Orin you must use 3.3V. This chip has got 4 analog outputs that can go between 0V and the supply voltage. Since you are operating on 3.3V you must not use Gain=2x setting for the internal 2.048V VRef setting, since 2*2.048V is bigger than your 3.3V supply.
In order to get higher voltages and currents you need an OpAmp circuit for each output.
Suggestion:
TI TL974
(there are 4 opamps in one package).
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Thanks!
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