Difference between revisions of "Jetson/Tutorials/Battery Power"

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(Added image of the DC-DC converter enclosure)
(Wrote the battery power tutorial)
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3s lipo does work just powered tk1 with old parrot a.r drone battery which is. 11.1v at 1amp
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The easiest way to power your [[Jetson TK1]] using batteries is with a [http://www.hobbyking.com/hobbyking/store/__8932__turnigy_2200mah_3s_20c_lipo_pack.html Turnigy 3S 2200mA Li-Po battery] for $8.50 giving roughly 4-6 hours of moderate use (0.8 efficiency * 2.2Ah * 11.1V / 3W). Beware that Li-Ion and Li-Po batteries should never be charged from a NiCad/NiMh or SLA charger, they need a charger that specifically supports LiIon/LiPo batteries. The [http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=7028 Turnigy Accucell-6] for $23 is a popular universal charger for batteries like this, it can charge it in less than an hour if needed, but for longer battery life you are recommended to charge it at the 0.7A setting for around 5 hours.
  
== MyzharBot project ==
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For example, you could simply attach a standard [http://www.pololu.com/product/2448 2.1mm DC barrel plug] to the mentioned [http://www.hobbyking.com/hobbyking/store/__8932__turnigy_2200mah_3s_20c_lipo_pack.html Turnigy 3S 2200mA Li-Po battery] with a [http://hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=17864 Voltage & Current Monitor] for $5 in-between the battery and DC plug, to have a full battery-powered [[Jetson TK1]] system that easily shows the total current draw of the device (multiple the Current in Amps by the Voltage in Volts to get Power in Watts) as well as to see when the batteries need recharging.
{| class="wikitable"
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=== More information ===
| [[File:MyzharBot-1.jpg|250px|thumbnail|center|MyzharBot, the crawler robot]]
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* More details about battery options as well as expected running times are shown in the [[Jetson/Jetson_TK1_Power#Powering_the_Jetson_TK1_board_with_a_battery|Powering the Jetson TK1 board with a battery]] section of the Jetson TK1 Power page.
|| The [http://myzharbot.robot-home.it crawler robot MyzharBot] is powered by a [http://www.hobbyking.com/hobbyking/store/__9516__Turnigy_5000mAh_4S_30C_Lipo_Pack.html Turnigy 5000mAh 4S 30C Lipo Pack] battery. The battery is used to power both the motors than the logic units. The 12V voltage needed to power the NVidia Jetson TK1 are generated by a DC-DC converter. The DC-DC converter is necessary because the voltage of a 4S LiPo runs from 16.8V (Full Charge) to 12.8V (Warning Voltage). MyzharBot uses a [http://www.mini-box.com/DCDC-USB DC-DC programmable by USB], usually used for automotive application.  
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* There is also a page showing a detailed list of [[Tegra/OpenCV_Performance#Power_draw_during_computer_vision_tasks|Typical Power Draw for Different Computer Vision Algorithms]].
|| [[File:USB DC-DC.jpg|250px|thumbnail|center|Programmable DC-DC converter]]
 
|| [[File:USB_DC-DC_enclosure.jpg|250px|thumbnail|center|Programmable DC-DC enclosure]]
 
|}
 

Revision as of 15:40, 25 June 2014

The easiest way to power your Jetson TK1 using batteries is with a Turnigy 3S 2200mA Li-Po battery for $8.50 giving roughly 4-6 hours of moderate use (0.8 efficiency * 2.2Ah * 11.1V / 3W). Beware that Li-Ion and Li-Po batteries should never be charged from a NiCad/NiMh or SLA charger, they need a charger that specifically supports LiIon/LiPo batteries. The Turnigy Accucell-6 for $23 is a popular universal charger for batteries like this, it can charge it in less than an hour if needed, but for longer battery life you are recommended to charge it at the 0.7A setting for around 5 hours.

For example, you could simply attach a standard 2.1mm DC barrel plug to the mentioned Turnigy 3S 2200mA Li-Po battery with a Voltage & Current Monitor for $5 in-between the battery and DC plug, to have a full battery-powered Jetson TK1 system that easily shows the total current draw of the device (multiple the Current in Amps by the Voltage in Volts to get Power in Watts) as well as to see when the batteries need recharging.

More information