T201

T201 UPS for Jetson Nano

T201 UPS for Jetson Nano

How to connect power switch

T201

T201

Overview

T201 is a compact one-cell 18650 UPS Shield specially designed for NVIDIA Jetson Nano Developer Kit, it provides smart and powerful uninterruptible power supply and safe power management for Jetson Nano 2GB/4GB.

Note:

1. NOT compatible with J010 NANO 4.

2. T201 must be directly connected to Jetson Nano. If T201 does not detect Jetson Nano, it will turn off the power output after a few seconds.

3. AL ON means power always on. When use the exteral power switch, the "AL ON" pin on the T201 must be OPEN.

Pin	Funciton
AL ON Pin 1&2	Short: Power always on, power button or external power switch disabled; Open: Power button press to switch on, hold 3 seconds to switch off
PWR SW Pin 3&4	for external 2-pin momentary switch

Features

• Ideal Uninterruptible Power Supply (UPS) solution for Jetson Nano Developer Kit
• Max 5.1V 4000mA Power Backup for Jetson Nano
• With 18650 single cell battery holder
• Upto 1000mA charging current
• AC power loss & power adapter failure detection (LED & GPIO)
• Automatic powering off after system safe shutdown
• Integrated battery reverse polarity protection circuit
• Integrated over current protection and over voltage protection
• Intelligent automatic charging and discharging
• 4 blue LEDs indicate battery charging and discharging levels of 25%, 50% , 75% and 100%
• Powers the Jetson Nano via the 40-pin header - no additional cabling required
• Reserves the 40-pin header that can be stacked with other accessory boards
• On-board press button to control power on /off
• Press the button to power on
• Press the button for 3 seconds to power off

How to Power

Power Via DC 5521 power jack of T201: DC 5V±5%, ≥4A

Warning about power supply:

1. Don't use that adjustable voltage power supply.
2. Don't use the same power supply used on LED strips.

The above two are absolute garbage power supply, can not be used!!!

Packing List

• 1x T201 V1.0 UPS Shield
• 3x M2.5x20mm F/F Spacers
• 6x M2.5x6mm Screws
• 1x Jumper link Pitch 2.54mm

PCB dimention

T201 Dimensions source file (DXF): File:T201-V1-DXF.dxf - You can view it with Autodesk Viewer online

User Manual

Installation Video for T201+N100-V12: https://youtu.be/hjczsEjmSNY

Application: belabox encoder

FAQ

Q: Which GPIO of Jetson Nano has been occupied by T201 UPS?

A: The GPIO4 has been occupied by T201, the rest GPIOs are available to use.

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Anonymous user #2

10 months ago

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Awesome, do you make this for Jetson Orin Nano 8gb?

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Walker

10 months ago

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Hi, Jetson Orin Nano 8gb There are currently no products with similar features to the T201

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Anonymous user #1

11 months ago

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This is a working python script for soft shutdown sensing Pin 7 for power disconnect using Jetson GPIO. Power both the Jetson DC port and the T201 hat DC port with the same DC source and it will power on when power is connected.

1. !/usr/bin/env python3

import Jetson.GPIO as GPIO import time import os import subprocess

1. Use board pin numbering

GPIO.setmode(GPIO.BOARD)

1. Pin to monitor for power loss

POWER_LOSS_PIN = 7

1. Set up the GPIO pin as input

GPIO.setup(POWER_LOSS_PIN, GPIO.IN)

def check_power_loss(): return GPIO.input(POWER_LOSS_PIN)

def shutdown_system(): print("Power loss detected. Initiating shutdown...") subprocess.call(['sudo', 'shutdown', '-P', 'now'])

try: while True: if check_power_loss(): shutdown_system() break else: print("Power is connected. System running normally.") time.sleep(5) # Check every 5 seconds

except KeyboardInterrupt: print("Exiting program")

finally:

GPIO.cleanup()

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Walker

11 months ago

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Hello, regarding this python script, if possible, you can contact our technical support at support@geekworm.com

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Anonymous user #1

11 months ago

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is there developer documentation for this device? I need to know how to interface with this device when developing a soft shutdown program on power source disconnect. Pin definitions? Acceptable software and commands? Any program snippets that might help are appreciated.

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Anonymous user #1

11 months ago

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Is there a software shutdown when the power gets disconnected? I want it to also power down the T201 so it is not using up the battery when off. I am seeing software solutions for Raspberry Pi UPS versions but not this one. Jetson Nano image comes with Ubuntu "18.04.6 LTS (Bionic Beaver)". I could maybe run a python program as a systemd service?

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Walker

11 months ago

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Hi, t201 support is button control power on/off, this Jetson Nano image you mentioned comes with Ubuntu "18.04.6 LTS (Bionic Beaver)", we haven't tested it, if it's possible, you can test it and test it.

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