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by wellsm89
Tue Apr 01, 2014 2:40 pm
Forum: General discussion
Topic: PiCheckVoltage : monitor battery voltage
Replies: 15
Views: 61580

Re: PiCheckVoltage : monitor battery voltage

Sorry for replying soooo late to this post, but I thought to mention that I'm using a LM3914 to measure the battery on the pi, using the LED output pins to trigger the appropriate GPIO port. I'm using a 12V battery though, not sure it this thing runs on 5V.. I am looking at using the LM3914 for mon...
by wellsm89
Tue Mar 04, 2014 4:27 pm
Forum: HATs and other add-ons
Topic: Adding RGB sensor to Gertboard
Replies: 2
Views: 2280

Re: Adding RGB sensor to Gertboard

Thanks Gert will post up the final robot when working.
by wellsm89
Tue Mar 04, 2014 12:51 pm
Forum: HATs and other add-ons
Topic: HC-SR04 Ultrasonic Sensor Arduino
Replies: 1
Views: 8233

HC-SR04 Ultrasonic Sensor Arduino

Hi,

I'm planning on using the HC-SR04 in a single pin configuration on the Gertbaord Arduino, but the SR04 needs +5V, and wondered if anyone has tried running this from the Gertboard with any luck.

Thanks

Single Pin-> https://code.google.com/p/arduino-new-p ... Pin_Sketch
by wellsm89
Mon Mar 03, 2014 11:27 pm
Forum: HATs and other add-ons
Topic: Adding RGB sensor to Gertboard
Replies: 2
Views: 2280

Adding RGB sensor to Gertboard

Hi, I'm wanting to run x5 TCS3472FN RGB Colour sensors from my Gertboard, and I've got them wired into a 8-way I2C multiplexer (PCA9547PW). My question is simply does it matter which 3V3 pin on the board i draw my voltage from as there appears to be several and not sure from the manual if there is a...
by wellsm89
Wed Feb 19, 2014 7:14 pm
Forum: Beginners
Topic: LiPo and Motor Battery Voltage Regulator
Replies: 1
Views: 1141

LiPo and Motor Battery Voltage Regulator

Hi, I need some advice with selecting a power regulator module for my robot. I am using a 22.2v 5000mAh LiPo Battery, and running a Devantech MD49/EMG49 motor and controller board which is fused at 10A on the motor controller itself. I have been advised from the Devantech guys to fit a On/Off Switch...
by wellsm89
Tue Feb 11, 2014 5:01 pm
Forum: Automation, sensing and robotics
Topic: Automatic Robot LiPo Charging
Replies: 3
Views: 2108

Automatic Robot LiPo Charging

Woking on an autonomous robot at the moment, and with the docking I'm happy with the basic fundamentals on getting it into the docking station, however I'm drawing a blank on ideas for connecting a LiPo balance charger to the dock. The advice is to use the balance charging facility rather than just ...
by wellsm89
Tue Nov 12, 2013 10:03 pm
Forum: Automation, sensing and robotics
Topic: Line Follower Sensor
Replies: 1
Views: 817

Line Follower Sensor

Hi, I am looking at following a yellow line on a grey background and have the following options; LED/LDR - Can sense primary colours, but slow response 0.1s IR LED/Photodiode - Effects from ambient light, not sure how successful this will be with yellow/grey RGB Colour Sensor - Not much information ...
by wellsm89
Mon Nov 11, 2013 10:04 pm
Forum: Automation, sensing and robotics
Topic: RGB Colour Sensor Line Follower
Replies: 0
Views: 662

RGB Colour Sensor Line Follower

Has anyone got any prior use/feedback of using a Colour Sensor (TCS34725FN) over the classic IR sensor for a line follower robot?

Just thinking might provide a more interesting ability to follower different colour lines and perform certain actions based on colour sensed.
by wellsm89
Thu Oct 31, 2013 6:56 pm
Forum: Automation, sensing and robotics
Topic: Ultrasonic and Infrared Sensor Comparison
Replies: 2
Views: 1824

Ultrasonic and Infrared Sensor Comparison

Hi, I'm looking at using a sensor to detect obstacles in it's path, and from my research people use either ultrasonic, infra-red, combination of both. Can anyone simply state the benefits/negative's of each, because from what I can see is that ultrasonic cost more but can sense a further distance, h...
by wellsm89
Thu Oct 31, 2013 6:51 pm
Forum: Beginners
Topic: Wiring up RGB Sensor to Raspberry Pi
Replies: 1
Views: 572

Wiring up RGB Sensor to Raspberry Pi

Hi, This is my first attempt at connecting a TSC3472 RGB sensor to my raspberry pi. I have a raspberry pi rev 2, and a breadboard to attach the sensor to. I have read the data sheet shown below, and got the operating characteristics, however I am a bit confused with some of the wiring. I am aware th...
by wellsm89
Thu Oct 24, 2013 4:57 pm
Forum: HATs and other add-ons
Topic: RGB Sensor
Replies: 2
Views: 1851

Re: RGB Sensor

Just saw this on http://learn.adafruit.com/adafruit-color-sensors: We add supporting circuitry as well, such as a 3.3V regulator so you can power the breakout with 3-5VDC safely and level shifting for the I2C pins so they can be used with 3.3V or 5V logic. Finally, we specified a nice neutral 4150°K...
by wellsm89
Thu Oct 24, 2013 4:42 pm
Forum: HATs and other add-ons
Topic: RGB Sensor
Replies: 2
Views: 1851

RGB Sensor

Hi, I am looking at making my own RGB sensor to keep costs down, as I see Modmypi have an RGB sensor for £12 (https://www.modmypi.com/adafruit-rgb-colour-sensor-with-ir-filter), but from Mouser UK I can get the chip TCS34725FN (http://uk.mouser.com/ProductDetail/ams/TCS34725FN/?qs=sGAEpiMZZMsE7cRVS4...
by wellsm89
Tue Oct 22, 2013 8:42 pm
Forum: Automation, sensing and robotics
Topic: Induction Charging 24v
Replies: 0
Views: 601

Induction Charging 24v

Hi, Has anyone had any experience with induction charging at 24v? I'm looking at novel ways of charging my robot without a manual connection. I've had success with the 5v for my pi, used on this system http://www.adafruit.com/products/1407, but have yet to venture into trying with 24v (not sure how ...
by wellsm89
Sun Oct 20, 2013 9:36 pm
Forum: Automation, sensing and robotics
Topic: Robot Drive System - stepper or servo?
Replies: 3
Views: 1434

Robot Drive System - stepper or servo?

Hi, I'm building a robot which will weigh inc. payload around 20Kg, so I need to spec a decent motor to this. The robot will be autonomous and turn on the spot when required. This is my first robot project, so looking forward to getting stuck in. I'm looking at using a 2-wheeled robot with different...
by wellsm89
Thu Jan 31, 2013 9:38 pm
Forum: Other projects
Topic: Apple Cinema DIsplay
Replies: 5
Views: 3479

Apple Cinema DIsplay

Hi,

Has anyone had any luck using an Apple Cinema Display connected to a raspberry pi? There are a few forum posts but no one has an answer,

Cheers

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