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Questions tagged [pololu]

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Bits getting scrambled over software serial between ESP8266 and Pololu A-star

Setup: ESP8266: board description (sorry it's in Japanese) Pololu A-Star 32U4 Micro: board description Communication over software serial, library EspSoftwareSerial, baud rate 9600 Sender: pololu, ...
abhishek47's user avatar
0 votes
2 answers
175 views

Serial Error Pololu Micro Maestro

I have build a solution that looks almost like this: The wires that does the communication between the Micro Maestro and the two Jrk's and the RoboClaw are not included, so this is not a perfect ...
bjornsing's user avatar
  • 163
1 vote
2 answers
407 views

Roboclaw 2 x 60A - Logic Battery Low

I have a problem each time when I start my Roboclaw 2 x 60A motor controller. When I power it I always see a blinking red light and attaching the USB I see, in the Basicmicro Motion Studio, that I ...
bjornsing's user avatar
  • 163
2 votes
0 answers
171 views

Looking for help improving power control circuit

I am looking for ideas on improving the circuit below. Any constructive criticism is very much appreciated as well. The following is a long explanation how I arrived at this monstrosity, it can be ...
Maple's user avatar
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0 votes
0 answers
119 views

What are the parts used in the pololu QTRX - RC sensors

I am making a line tracking device project, the number one important part of the device is the IR sensor itself. Now part of the project parameters is that it must be a single board and be only using ...
Jake quin's user avatar
  • 1,924
0 votes
1 answer
361 views

Pololu A4988 Decoupling Capacitors

My son (9yrs) has become interested in robotics. I did a course on it in college, but that was a LOOONG time ago and the course was much more rooted in programming than it was in electrical ...
Networking Guy's user avatar
0 votes
1 answer
115 views

Where to place a MOSFET switch

After many years, I'm getting back into some simple wiring. I'm trying to make a self-sustained wifi tracker. This tracker will have a 3.3v Button cell lipo battery as a battery backup and I want to ...
ntgCleaner's user avatar
3 votes
5 answers
2k views

Why does my microcontroller's 5V out fail to activate my 5V relay?

I am using a small microcontroller with 5V output lines to try to turn a relay on and off. I bought the relay module from Amazon and unfortunately I don't know much about what is on the relay module'...
tmsimont's user avatar
  • 135
1 vote
1 answer
407 views

Pololu step-up converter drops voltage

I have a Pololu 3.3V step-up converter - U1V11F3. I tested it by connecting a regular 1.5V alkaline battery for input and a resistor at output. With no load or small load (10K) it keeps the output ...
rslite's user avatar
  • 193
1 vote
1 answer
162 views

Pololu Pushbutton Power Switch

I am replacing my auxiliary light switch of my car. on the switch assembly, it has a positive, negative, and ground. I am replacing it with a pololu pushbutton power switch with an oem switch that is ...
ken's user avatar
  • 15
-2 votes
2 answers
90 views

Connect micro gearmotor to 5V battery

Would 3 motors (like this one http://www.pololu.com/catalog/product/993) connected to a 5V battery (like this one http://www.dx.com/p/59438) work?
user avatar
4 votes
2 answers
11k views

Maximum speed of stepper motor

I would like to compute maximum speed (RPM) of my bipolar stepper motor 42BYGHM809 -- rated voltage 2.7 V, rated current 1.78 A, phase resistance 1.6Ohm, phase inductance 2.5 mH. I know how to ...
vasco's user avatar
  • 957
0 votes
1 answer
1k views

Programming a Baby Orangutan using Arduino Uno?

I have the following setup: Arduino UNO without the chip: Notice that the Atmel chip is missing. And i have a Baby Orangutan: The orangutan burned with Arduino Uno R3 Bootloader. I connected ...
Danpe's user avatar
  • 163
1 vote
1 answer
6k views

Unable to read values from Pololu QTR 8RC

I am using the Pololu QTR 8RC sensor array. I am using only 5 sensors. I have connected the sensors to arduino on digital pins 3 till 7 + VCC and GND. I am using the example sketch. If I use the ...
Hemanshu Bhojak's user avatar
5 votes
6 answers
2k views

Servo jitters at specific positions, why?

I have a Pololu Micro Maestro, and it's great. But when i tell the servos to move to specific positions, sometimes it makes a beeping-like noise. This only happens at specific positions. It's not ...
Moulde's user avatar
  • 151
4 votes
1 answer
2k views

QTR 8RC White line detection

I am using a qtr8-rc sensor array on a line following robot, When I use it on a black line on a white surface it works but when i try to use it on a black surface with white line i can't get correct ...
Hamza Yerlikaya's user avatar
0 votes
3 answers
189 views

Experience with Pololu Robots [closed]

Has anyone had much experience with the Pololu Robots Which are the coolest? what do you recommend i get? I'd like to hear about some cool projects with these Robots :)
mad_z's user avatar
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