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Using Arduino / Motors, Mechanics, and Power / Where is this power coming from?
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on: May 07, 2013, 03:40:19 pm
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As it seems there is no way to disconnect the WiFi shield (already reported in several posts) I'm trying to externally control when the board receives power and when it doesn't. In order to find out which pin will be the best fit for my purpose I started by bending the pins that I thought were powering the shield: Vin, 5V, 3V3 - Picture 1 To my surprise the board is not only still getting power but it works as if the connections were still there.- Picture 2 (Green led indicates it is connected to my network) Magically Pin 5V is getting 5V from somewhere - Picture 3 What am I missing? Or the Arduino besides being a great computer product is also able to generate power by itself ??  Many thanks in advance for any help / hint to accomplish my goal: finding a way to disconnect the WiFi shield in order to save power... |
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Using Arduino / Programming Questions / Re: How to fully disconnect with WiFi Shield
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on: May 06, 2013, 07:06:50 am
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Darduino, thanks for your answer and suggestion, PInoccio seems to be a very good option but isn't yet available.
Regarding your idea PeterH, I'm not such an experienced programmer as to feel comfortable to mess around with the library.
I guess I will follow the "analog switch" path and disconnect the wifi power
Will post my results when done, in the meantime if anybody has a better solution...
Best
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Using Arduino / Programming Questions / Re: How to fully disconnect with WiFi Shield
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on: May 05, 2013, 03:06:31 pm
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Darduino, have you made any progress on this? i'm experiencing the same problem and I'm extremely frustrated with the fact there is no answer from the Arduino crew considering the Wifi shield is not a cheap piece of HW to have such a poor behaviour.
Please share any solution you could have found.
Thanks
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11
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Using Arduino / Networking, Protocols, and Devices / Wifi shield: does it (really) work?
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on: March 09, 2013, 09:15:59 am
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Dear Gurus, I know this have been addressed before but after struggling for weeks to have a STABLE wifi connection (with no success at all) I decided to raise the point again and see if somebody can help me.
So here is the full story:
Setup:
Official Arduino Uno R3 (recently bought)
Official Arduino Wifi Shield (recently bought so should be up to date...)
Powered with a 5V 1A Power Supply
Connected to a Windoes XP PC, through the USB port, running Hyperterminal (to see what's happening)
Good and Stable Wifi signal
Sketch:
Original Wifi Example WiFiWebClientRepeating (by Tom Igoe) with a minor modification in order to count how many times I was really able to communicate with the server (code attached).
Problem:
It isn't stable, sometimes it run till Counter > 5000 (several hours) and sometimes it stops after no more than 10 interactions.
Since my project (weather station) involves leaving the setup running unattended (powered by solar panels) in a difficult to access place, resetting is not an option.
Questions:
1 - Is there any way to make it work for ever as it should? What am I missing?
2 - As an option, is there a way to code something to start all over again once I detect the connection has failed several times?
3 - is there an easy way to get which Wifi firmware version I'm running?
Many thanks in advance for your (for sure) valuable help
Regards from Brasil !!!
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Using Arduino / Networking, Protocols, and Devices / iTead BT and WiFi Shield
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on: December 01, 2012, 01:09:57 pm
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Hi guys, I'm facing the problem descrived below and would like to see if you could help me.
I have an iTead BT V2.2 and an Official Arduino Wifi shield.
They are both working fine by themselves but when I plug both at the same time then the Wifi shield is not able to find anymore any of the Wifi networks around. I'm running the original ScanNetworks Example.
I'd guess there is some type of conflict between the BT and WiFi Shields but can't find it...
Any hints?
Many thanks in advance, Simon
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Using Arduino / Installation & Troubleshooting / Arduino Mega and Official WiFi Shield
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on: November 09, 2012, 06:12:47 am
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Team, I guess this is nothing new but I have unsuccessfully trying to find an answer.. I got my brand new Official WiFi Shield, pluged into my Arduino MEGA2560, loaded the ScanNetworks (ARduino 1.0.1) sketch and I'm getting the "WiFi shield not present" error message. I've searched the forum, the internet and the Encyclopedia Britannica and I'm not sure what to do next...should I start by upgrading the "Atmega8U2" as explained in http://arduino.cc/en/Hacking/DFUProgramming8U2 ? The instructions there doesn't help much either to identigy if I should or shouldn't...as a matter of fact the driver version I'm getting is: 5.1.2600.0 dated 15/11/2007 The article by Jensa http://flashgamer.com/arduino/comments/how-to-update-the-official-arduino-wifi-shield seems to be a good starting point but before getting into this somehow complicated process I want to make sure I'm in the right track. Many thanks in advance for any guidance (I'm sure is going to help others as well...) Best!! |
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Using Arduino / LEDs and Multiplexing / Re: Sure Electronics new 32x16 bi-color display: 3216 RG -Cont. from read only forum
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on: November 02, 2012, 12:54:53 pm
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Dear David and Florinc, the missing 1nF on C1 was the problem, once I installed it as per David suggestion everything is working fine. Many thanks!
Worth to notice is the (ridiculous) message I got from Sure Electronics Customer Support when I asked them about David's suggestion:
Dear Sir,
Thank you for your purchase.
It can solve the problem by the way you said. The item has problem, we will update the version.
Have a nice day.
Best wishes,
Customer Service and Sales
Sure Electronics Co., Ltd.
East zone, 3F, Building 6
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| Arduino Forum :: Members :: simon_schvartzman