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by SteveL89
Tue Jul 22, 2014 12:13 am
Forum: General discussion
Topic: Bluetooth Torture
Replies: 2
Views: 1704

Bluetooth Torture

Got my RPi B+ and it is great. I have a Pibrella board that I added a header to the I2C breakout and it is working great. Started a project this weekend getting an arduino to send serial data to the Pi B+ so a sensor on the arduino can send data to the Pi and light up the Pibrella lights and readout...
by SteveL89
Sun May 26, 2013 9:24 pm
Forum: Automation, sensing and robotics
Topic: NXT-Python Color Sensor
Replies: 0
Views: 719

NXT-Python Color Sensor

I am working on a robotics project using the Lego Mindstorms 2.0 and NXT-Python. I have a robot working with the Ultrasonic Sensor. I am trying to add the RGB Color sensor that comes with the Mindstorm kit. Can anyone point me to some simple python code to test this sensor out to see if I get correc...
by SteveL89
Sun Feb 17, 2013 6:46 pm
Forum: Python
Topic: Data from Serial Port
Replies: 2
Views: 2429

Re: Data from Serial Port

I figured it out and here is the solution in case anyone is interested. In my python script, first, I defined the serial port as follows: ser = serial.Serial("/dev/ttyAMA0", 9600) Then I assigned the output from the serial port to a variable: f = ser.readline() Then, I extracted the elements from th...
by SteveL89
Sun Feb 17, 2013 4:05 pm
Forum: Python
Topic: Data from Serial Port
Replies: 2
Views: 2429

Data from Serial Port

I am looking for some guidance on converting data from Readline into a variable I can use to perform arithmetic calculations. I have set up an ATMega (Gertboard) to run a digital timer that goes on and off. The time elapsed is sent via serial to the Pi. I wrote a Python script that prints the elapse...
by SteveL89
Mon Feb 04, 2013 4:39 am
Forum: HATs and other add-ons
Topic: ATmega 328 Running LCD
Replies: 14
Views: 4604

Re: ATmega 328 Running LCD

Tried it and wired it as per instructions but just got a blank screen with no text. I will try it again tomorrow and report back.

S
by SteveL89
Sat Feb 02, 2013 8:40 pm
Forum: HATs and other add-ons
Topic: ATmega 328 Running LCD
Replies: 14
Views: 4604

Re: ATmega 328 Running LCD

How can I access your instructable?

Steve
by SteveL89
Fri Feb 01, 2013 12:28 am
Forum: HATs and other add-ons
Topic: Photos of the original Gertboard & the new Assembled one
Replies: 6
Views: 2236

Re: Photos of the original Gertboard & the new Assembled one

I feel the same about mine. The motor controller on the original can handle larger motors if I am not mistaken?

What is the advantage of having pull-ups?

S
by SteveL89
Thu Jan 31, 2013 9:09 pm
Forum: HATs and other add-ons
Topic: Photos of the original Gertboard & the new Assembled one
Replies: 6
Views: 2236

Re: Photos of the original Gertboard & the new Assembled one

Any significant difference between the functionality of one versus the other? In other words, I built a version 1, anything I am missing out on by not having a version 2?

S
by SteveL89
Tue Jan 29, 2013 9:43 pm
Forum: HATs and other add-ons
Topic: ATmega 328 Running LCD
Replies: 14
Views: 4604

Re: ATmega 328 Running LCD

I was not able to get it working, most likely due to my own ineptness!! However, the reason I was trying to get it to work was to run a temperature sensor and display the temperature on the LCD using the ATmega. What I ended up doing was running the temperature sensor off the ATmega and the LCD off ...
by SteveL89
Sun Jan 27, 2013 1:52 am
Forum: HATs and other add-ons
Topic: ATmega 328
Replies: 3
Views: 1596

Re: ATmega 328

Thanks for the heads up. I have been working on trying to get glcdfont.c to work and I stumbled onto a solution. On line 9: static unsigned char font[] PROGMEM = { I added: const static unsigned char font[] PROGMEM = { and now it compiles and runs. However, on the Piccolo sketch, I am not even sure ...
by SteveL89
Sat Jan 26, 2013 11:31 pm
Forum: HATs and other add-ons
Topic: ATmega 328
Replies: 3
Views: 1596

ATmega 328

First I just want to give more props to Gert. I love my Gertboard! I have the Ver 1 that I assembled (first major DIY project), and then had to troubleshoot due to my own lack of soldering skills, and then finally fixed and it works like a charm. I don't think I will order a pre-assembled one unless...
by SteveL89
Mon Jan 21, 2013 8:27 pm
Forum: HATs and other add-ons
Topic: ATmega 328 Running LCD
Replies: 14
Views: 4604

Re: ATmega 328 Running LCD

Thanks for sharing this. This worked from your Gertboard?

Steve
by SteveL89
Mon Jan 21, 2013 2:00 pm
Forum: HATs and other add-ons
Topic: ATmega 328 Running LCD
Replies: 14
Views: 4604

ATmega 328 Running LCD

Has anyone tried to run a 16x2 LCD with the ATmega 328 on the Gertboard using the "Hello World" example sketch in the Arduino IDE? I have wired my ATmega to the LCD using the wiring suggested in the example, converting the Arduino pin designations to the proper Gertboard equivalents. I am powering t...
by SteveL89
Wed Jan 16, 2013 11:54 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

I thought about doing that but was worried I might muck it up and there is not much space between the components. A bit jury rigged I admit, but it seems to be working fine and hopefully now the voltage regulator for the Pi is no longer in play and I won't get any resets. Working my way through the ...
by SteveL89
Wed Jan 16, 2013 11:04 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

Thank you all for your advice and help. I fixed it!! Here is what I did. I took Bill's advice and cut the lead from an LED and soldered it from the C1 capacitor to the top pin of the regulator. I tested the voltages and still, nothing for the top pin (the one closest to the 3.3v printing or the uppe...
by SteveL89
Wed Jan 16, 2013 4:44 am
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

Bill,

Is the regulator pin 3 the top most or bottom most pin? It looks like the trace at the top most pin may be the problem.

Steve
by SteveL89
Wed Jan 16, 2013 3:36 am
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

I checked the regulator. The lowest pin reads at 5 volts, the middle at 0 and the upper pin at 3.3. Still not getting 3.3 v (only 0.5) on the uppermost J7 pin. I suspect an error in soldering the SMD capacitor at C1. I think the pad on which it is soldered is missing or the connection between the re...
by SteveL89
Tue Jan 15, 2013 9:59 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

Can I test to see if the regulator itself is functioning by checking the voltage at the upper most pin of the regulator? Shouldn't that pin be at 3.3 v if the regulator is working? My concern is that the board itself may not be allowing contact to be made between the regulator and the capacitor beca...
by SteveL89
Tue Jan 15, 2013 9:37 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

I am in the US in New York.

Steve
by SteveL89
Tue Jan 15, 2013 8:37 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

This may be a dumb question but... Is it possible for me to jump the bottom pin (direct 3.3 v from Pi) to a breadboard and through a voltage regulator and then back to the middle pin to supply the Gertboard? The rest of my Gertboard works fine and I just hate to lose all that work. I certainly don't...
by SteveL89
Tue Jan 15, 2013 7:08 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

Unfortunately it is the right orientation as that would be an easy fix. On very careful inspection, it appears that the hole that the uppermost pin of the regulator is going through only has silver on one half of the hole and not the side facing the J7 pins. Could this be the problem? If so, is ther...
by SteveL89
Tue Jan 15, 2013 1:39 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

Thanks for your guidance. I checked my connections and look for a short, but I don't see anything obvious. Just so I am clear, with the board oriented with the motor controller in the upper right hand corner when looking down at the board, J7 has three vertical pins. The bottom most pin is the one I...
by SteveL89
Mon Jan 14, 2013 10:37 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Re: Testing Gertboard

Gert, Thanks for your quick reply. I tested the voltage on the pin closest to the J7 and the one closest to 3v3. The one closest to J7 reads 3.3 v. The one closest to 3v3 reads less than 0.2 volts. When I put the jumper between the middle pin and the one closes to J7, everything works fine. LED and ...
by SteveL89
Mon Jan 14, 2013 2:26 pm
Forum: HATs and other add-ons
Topic: Testing Gertboard
Replies: 20
Views: 2688

Testing Gertboard

Just finished assembling my Getboard last night. I tested with a power meter, the first pin for J7 with jumper off as described. I don't get a power reading. When I test the third pin, I get 3.3 volts. When I place jumper and run the button test and the LED test, both work properly. However, when I ...
by SteveL89
Tue Jan 01, 2013 5:36 pm
Forum: Other projects
Topic: 16x2 no contrast help (solved)
Replies: 22
Views: 7291

Re: 16x2 no contrast help (solved)

Bill, Happy New Year, it works!! I made an LED board and tested the wiring to the LEDs using the python script and I was able to light the LEDs so I knew the GPIO leads and the program itself were working. That left the LCD. I checked the solder connections for the pins and redid some of them and lo...

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