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Found 2 results

  1. Recently finished my first msp430 based robot, a Basic Light seeker! This was a project to get me to learn more about the MSP430 microcontroller. In this project specifically, using multiple ADC inputs and PWMs ( 2 PWMs was a little tricky on the MSP430G2452 but eventually got it ). The robot turns according to the difference between the light values on the left and right, using two Photoresistors/LDRs. The robot is powered my a set of 4 to 5 NiMH 1.2-1.4V batteries which directly power the l293d Motor Driver IC and DC motors, and is also fed into a LP2950-33 3.3V LDO to provide regulated power to the MSP430G2452 IC and Photoresistors/LDRs. Most of my robot designs use a separate power supply for control and motors for stability, but this one has been fine so far and has an abundance of filtering caps. For a better description look at my blog post here: http://emdinventor-blog.tk/light-seeker-robot-with-msp430/ and for the code look at my github repository for the robot's code here: https://github.com/emdarcher/msp430_tank_robot Some pictures of the robot: Fritzing diagram ( missing 0.1uF filtering cap across Vcc and GND on the mcu ):
  2. Hello, I've got two beginners questions... 1) If I'd want to move a robot by a specific distance (however not be very precise), do I need wheels with encoders? Can't I somehow approximate the time I need to power the engine? I don't need to move exactly 1mm left or right. I've read about encoders, but they are too expensive for me. 2) If I wanted to control a robot from an Android app via bluetooth, could I send some data from the robot to my phone, process the data (on the phone) and send something (an instruction, lets say) back to the robot? Sorry for my English. Thanks in advance.
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