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Author Topic: Your latest purchase  (Read 76942 times)
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Melbourne, Australia
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So um.

After installing Android Studio and mucking about for a day, I managed to develop something.

A headache.

A few days later, I discovered Basic 4 Android, had a look through some examples, had a quick play with the demo version and watched the Intro video. Then bought it.

This evening, I managed to develop my first ever Android app that connects to a HC06 module connected to an Arduino Mega, and pass information between the Android app running on my phone and Arduino app running on my Mega.

I'm prototyping the system using the serial monitor I wrote, so the workflow gets a bit intense switching between Delphi as I add new monitor functions to make prototyping easier, to Basic to update the Android app, to C/C++ to update the Arduino app. Getting the =, :=, == and the  ', " right takes patience and concentration.

But it works. And it's so straight forward with so many B4A example apps that putting things together is almost a doddle. The example app code is uglier than sin, but it's still a doddle...

Best $69 I have spent in a long while.
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Windows serial port monitor: Tellurium | Arduino serial port debugging library: DBG | Cusom LCD char generator | Technical questions will only be answered in forum threads

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Can you post some sample Android Basic Code to show how it looks like?
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Rob Tillaart

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Think Microsoft VB / VBA and you are there 100% for both code and UI.

Code:
Sub Activity_Create(FirstTime As Boolean)
Activity.LoadLayout("2")
If AStream.IsInitialized = False Then
AStream.InitializePrefix(Main.BTSerial.InputStream, True, Main.BTSerial.OutputStream, "AStream")
End If
txtLog.Width = 100%x
End Sub
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And to help me learn VHDL, I lashed out and got one of these off Ebay ($182 with free postage):

I'll turn to the FPGA book and board when my Arduino projects start bogging down or I need a break.
Last summer I got this board from Terasic, using an oldish student card:

http://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=139&No=502

Very good deal.  I guess it is similar to yours.  It's been fun to mess with and throw Verilog against to try stuff out.  The chip is HUGE.

I spent some time working out if I could get a uni friend to get one for me - given I have not been a uni student for a while, and in the end decided The cheaper board was less hassle. Those DE2-115s look unreal though. If I had a student card it would have been a no brainer.



My student card doesn't have an issue date on the front so I tried it and it worked fine, probably 6 years since I took my last class. smiley
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Vexatious Sampler

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I don't know what a 15,000 LE processor allows me to develop - have you done much with yours?
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I don't know what a 15,000 LE processor allows me to develop - have you done much with yours?

Well, no.  Mostly just the provided sample configurations.   I think they call them programs, but I can't bring myself to call it that, it's really a hardware configuration.  I did make a stupid little pushbutton calculator out of a much smaller CPLD (EPM7256 208 pin I got cheap on eBay - 5V operation but small by current standards) and ran it out of room before I could implement all the features I wanted it to have, and it was all simple integer stuff working on 12 BCD digits with the CPLD reading the keypad, storing it into a register, and decoding to 3 4x7 segment displays in a multiplexed scanned fashion - that part works.  Maybe I should go back and use a EPM1270 instead.  But as an obvious one, you need pretty large FPGAs to create soft processors with larger feature sets, especially if you are going to integrate some additional hardware onto it.  I haven't tried a soft processor yet because I haven't figured out where it would be preferable to have instead of a normal hard processor.  This is probably just a failure of imagination on my part.
« Last Edit: July 23, 2013, 09:08:13 pm by JoeN » Logged

Vexatious Sampler

Pittsburgh, PA, USA
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I bought one of these from Amazon/STAHL for $20 to replace my Radio Shack 30W pen.
Quote
Soldering Station Features Continuously Variable Power Between 5-40W, a 1.5mm Pointed Tip
http://www.amazon.com/Soldering-Station-Features-Continuously-Variable/dp/B0029N70WM/ref=sr_1_1?ie=UTF8&qid=1375992087&sr=8-1&keywords=soldering+station

I know you pros are shaking your heads at this toy. It doesn't work right out of the box.

First thing I had to do was fix it and that took a Y-shape security tip to get the handle open after rolling & sliding the grip off. Then lift the wires and push inside until the heating element made contact with what it should have been with a nice click. Did that back and forth a few times to be sure then hot glued the wires halfway down the handle to keep it there. They should stay, they're thick, stiff wires in heat shrink.
Put back together, it works now as far as melts solder even turned down though it does take a while to heat up.

I'll see how it goes and probably get my $20 worth.
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Examples can be found in your IDE.

Belgium
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I have a very similar looking one (probably the same)
It did work out of the box. Indeed slow to heat but once working it works good enough for Arduino style soldering  smiley-wink
Best regards
jantje
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OBD was on my wishlist for a long time, just played with some existing android apps and showed to some friends. There was a high "me too" reaction smiley-wink
Torque is a nice app - dials and gauges - with a heads up mode.


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Rob Tillaart

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I bought an AED.  Two,actually, one to gift to another household with a lot of high risk traffic.
Sigh.  Talk about gifts that you HOPE will NOT Be used.
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Melbourne, Australia
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Servos, push rods, universal joint, MPU-6050, pro mini clone.

Going to build a model-sized motion simulator.

I cancelled my futurlec order. More than 2 weeks after they said it would be 1-2 weeks before the remainder of my items were in stock. dx.com have been far more responsive in customer service and item delivery.
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Purchased an SD Card module and an ADXL345 accelerometer.
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OBD was on my wishlist for a long time...
Not so long ago, when I wanted BT OBD too, but my car is full of other crap, so I finally decided that actually I do not need it ;-)
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Arduino Uno R3, Arduino Mega 2560 R3, Ethermega (R3), and some Ethernet Shields (R3), Chronodots, TMP36 sensors, DS18B20 sensors, LCDs/TFTs, RS232C to learn and play...

Pittsburgh, PA, USA
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About 2 lbs of heavy stranded power wire from my scrapper neighbors for $3, salvage price. I haven't tried to measure the lengths (2 hanks) but I'd need some good size spools to wind it on.

A building got taken down and it had a lot of aluminum flex-conduit with wire, junction boxes and switches. This not being Detroit, I know where it came from and that it wasn't stolen but sold off cheap to scrappers to spend the time a destruction crew doesn't have at proper pay to separate materials and parts.

Look around, you might find such a deal. You won't get it from a recycler at that price, it's what they pay!
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The best is when you find a place getting all the old 25 or 50 pair copper telephone cable being pulled out. Get yourself a 6 or 8 foot length of that stuff, and never worry about breadboard jumpers for the rest of your life!
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