T208-hardware

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T208 V2.0 Jumper cap function

T208-V2.0-Interface

T208 V1.2 Jumper cap function

T208-Interface

T208 Pin Description

T208-Interface

Power Jack and Connectors

  1. T208 powers the Jetson Nano via the 40-pin header (Pin 2 & 4)
  2. Don't power the Jetson Nano via the Micro USB socket & DC jack
  3. T208 can be powered via the onboard DC jack or XH2.54 power input connector.

4-Pin Function Header

Connector for External Power Switch

  1. Please use momentary switch only and don't use latching switch
  2. Connector - Pitch 2.0mm 4pos

Power button & control

Function LEDs

Pins and GPIO used

Fuel gauge - LED Indicator

Operation of Discharging:

Operation of charging:

18650 battery dimension

18650size.png Do not use 18650 battery with built-in protection circuit

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Anonymous user #8

9 days ago
Score 0++

I bought your product it worked well at the first time I didn't used Jetson nano for a long time because of newborn baby... Today I started again. powered on.. and after few minutes I heard strange noise from t208 and It didn't turn on again led on and then off It is possible to turn on with dc in(via t208's input) but after boot i found oc alarm and overcurrent warning.

please tell me how I can solve it

Lisa

5 days ago
Score 0++
Hi,Please be sure to use a high-quality power supply, as inferior power supply will damage the T208.

Anonymous user #8

2 days ago
Score 0++
It was qualified 5V 4A Adapter

Anonymous user #7

10 months ago
Score 0++
Hello, I bought two sets of T208 V2.0 and connected with Jetson Nano. When I unplug power plug, both T208 and Jetson nano switched off immediately without power loss detection in both case of FON short and open, while T208 V1.2 which I bought last year works well. Please let me know how I can check the PLD status or anything I misunderstood.

Harry

9 months ago
Score 0++

Hi,

Please provide more detail via email to Support@geekworm.com

Anonymous user #6

20 months ago
Score 0++

Hello, What kind of battery can I use with the T208 ? (Voltage range, max capacity) I'm asking because most 18650 batteries are 3,7V which I'm not sure is up to the specs.

If you have any reference to give as an example ; I would be glad.

Lisa

19 months ago
Score 0++

Hello,

Thanks for your question.please refer topT208#FAQ.

Anonymous user #5

25 months ago
Score 0++
I have tested the device with the AON jumper removed, and the t208 behaves as expected when the PLD jumper is in place and the tactile switch is used for power up, however when the AON jumper is installed and power applied to the t208 the blue light comes on and the power on led on the Jetson Nano carrier board lights up but they only stay lit for approx. 4 seconds. After that all LEDs go off and the Jetson Nano can not be powered up using the tactile switch. Can you recommend a way to troubleshoot this problem?

Lisa

25 months ago
Score 0++

Hi,

Please check that the T208 is properly connected to the Jetson Nano board. JETSON NANO must be connected to T208, if it is not detected, it will automatically shut down.

If it doesn't solve the problem, please send some test pictures to us[support@geekworm.com],and tell us your order No.;Thanks~

Anonymous user #4

26 months ago
Score 0++

Hi,

Is it possible to use both the AON and PLD headers ?

Lisa

26 months ago
Score 0++

Hi,

Yes,you can use them both.

Anonymous user #2

26 months ago
Score 0++

Sorry,

I meant, is it possible to use both the AON and PLD headers at the same time?

Lisa

26 months ago
Score 0++
Yes,you can use AON and PLD at the same time,no conflict between them.

Anonymous user #3

26 months ago
Score 0++

Hello, I have been trying to use the jetson nano A02 with T208 with all the batteries installed. When I turn it on from the blue button, it does turn on, and switches off normally, but im finding difficulties with the AON.

When the device is off and is provided with power, it automatically switches on. But when electricity is lost (irrespective of how long) and is back on, AON switches on the device only on power cut and switches off when powered unless done manually in order to calibrate.

How can I solve this issue?

Lisa

26 months ago
Score 0++

Hi,

Please unplug the power plug first, and then unplug the power cord connected to the T208.

Anonymous user #2

27 months ago
Score 0++

Hi, may I ask, "Don't power the Jetson Nano via the Micro USB socket & DC jack" Does this mean that we shouldn't supply power to the Nano at all an only supply power to the T208 which would in-turn supply power to the Nano? Would anything disastrous happen if we were to do so ?

And, why shouldn't we not use 18650 batteries with a built-in protection circuit. Isn't the protection circuit supposed to help with regulating charge and preventing over-heating?

Lisa

27 months ago
Score 0++

Hi,

①T208 is a UPS expansion board, please power to the Nano via T208. Do not reverse power supply!!

②The T208 board has a built-in protection circuit, you can also use a 18650 battery with a protection circuit, but please pay attention to the size of the battery, because many batteries with a protection circuit are larger in size. To avoid using the wrong size battery, we recommend using a battery without a protection circuit.

Anonymous user #1

27 months ago
Score 0++
After shutdown, AON boots only after power plug is removed from T208