Posts with «lipo» label

Powering SG90 servos with lipo and BEC

Hi there,

I'm building a robot with 15+ SG90 micro servo's.

To power it, I've bought a 2C lipo battery, and a 5/6 volt BEC.

I've hooked up the BEC's 5v (red) to all the servo's red, and the BEC's ground to the servo's ground, as well as some arduino grounds (that control the servo).

The BEC has an on/off switch.  When the BEC is switched to off, and I plug the battery into the BEC, a surge of current flows through to the motors.  They all "twitch" very rapidly, and I've had some wires melt/smoke.

My questions are:

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Let's Make Robots 07 Jan 23:38
arduino  battery  general discussion  lipo  power  servo  

Creeper

Primary image

What does it do?

Navigate around via ultrasound or controlled by bluetooth

Inspired by this one: http://www.instructables.com/id/Strandbot-a-solar-arduino-powered-RC-motorize/ Autonomous walker, based on a model of the strandbeest. This unit runs on 20rpm 6 volt motors and walks real slow. On the other hand, it's very silent. Due to it's sweeping sensor it can run autonomous, but it can also be controlled with a bluetooth enabled device. On the front a small speaker, connected to a voice record and playback chip; when it runs into something, it does a Uh-Oh :)

 

Things still to work on:

- give it a paint job

Cost to build

$40,00

Embedded video

Finished project

Number

Time to build

10 hours

Type

legs

URL to more information

Weight

350 grams

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Let's Make Robots 16 Mar 20:57
2s  950mah  arduino  atmega32u  autonomous and bluetooth  c  cheap bluetooth receiver  dc motors 6v 20 rpm  hr-sc04 ultrasound  lipo  servo  sound record and playback  srf04  theo jansen  walker  

Want to learn Arduino? Use this educational Microbot!

Primary image

What does it do?

Educates people on arduino

Introducing the latest creation from B.O.T, the SWARMµBOT. An Arduino-Compatible educational micro-bot with all sensors required for applications such as Line-Following, Maze Solving, And Swarming! With a Atmega328 running an Arduino-compatible bootloader, and an integrated USB-UART bridge, programming this bot is as easy as connecting a USB cable, and hitting upload.

Cost to build

$99,95

Embedded video

Finished project

Complete

Number

Time to build

0 hours

Type

URL to more information

Weight

65 grams

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Let's Make Robots 11 Jul 19:01
1000mah li-po  3 emitter  3 qrd1114 reflectance sensors for line following  arduino  avoidance  detector pairs for obstacles  educational  learning  line following  lipo  maze solving  motor driver  motors  programming  robot  sensor  usb  wheels