Comments for Playwithmyled.com

Comment on Change Raspberry Pi lost password by Ken leggo

Ken leggo — Sat, 13 Apr 2013 05:27:11 +0000

If one has edit the long line after entering the edit mode so one has 3 line to read this string, after adding “init=/bin/sh” one must put the sentance back to the long line by using the backspace key.

Comment on Stepper motor controller circuit and code by Tutorials and Resources to Control Stepper Motor With Arduino Board

Tutorials and Resources to Control Stepper Motor With Arduino Board — Thu, 28 Mar 2013 17:52:47 +0000

[...] Stepper motor controller circuit and code – tutorial to control a stepper motor based on schema available on Arduino website. [...]

Comment on Internet to Serial Proxy by Kevin

Kevin — Mon, 25 Mar 2013 16:55:41 +0000

Hi. In the Internet to Serial Proxy app, can you see what is sent from the Arduino in the console log? Normally what is seen there is sent to the php page. Do you see a “Succeeded!” message after the string that must be sent in the ISP app log window?

Comment on Internet to Serial Proxy by Hafilah

Hafilah — Sat, 23 Mar 2013 04:03:19 +0000

oops, my code wasn’t reflected in the previous post

$response = $_GET['q'];
print ($response); //this is supposed to print out my RFID serial ID

error_log(“Internet to Serial Proxy Response: {$response}”);

Comment on Internet to Serial Proxy by Hafilah

Hafilah — Sat, 23 Mar 2013 04:00:48 +0000

Hi! I’m really new to this. I really hope you can help me out.

Basically, I need to send an RFID serial number to a PHP page. I’ve successfully connected the RFID USB Reader and the serial number is reflected in the Activity Log.

My Net is not connected and I’m not sure why.
My Preferences are as follows:
Listen to port: 8888
Request URL: http://localhost:8888/rfid.php
(I am using MAMP)

In my rfid.php, I’m using this code:

However, I don’t seem to get the serial ID reflected on my rfid.php page.

Could you please point out my mistake?

I hope to hear from you soon, Thank you!

Comment on Stepper motor controller circuit and code by Kevin

Kevin — Thu, 21 Feb 2013 01:31:16 +0000

@shashank It has been a while since I mess with parallel ports. I think it is possible. Just be aware the verify if your port send negative violate, the L298 do not like it. My way of doing it was to put optocouplers to isolate with my circuit, this way I protected my computer.

Comment on Stepper motor controller circuit and code by shashank

shashank — Wed, 20 Feb 2013 07:45:20 +0000

hi i have a l293d ic circuit board..can i directly connect the 4 pins from the circuit board to the pc parallel port and control the motors from turbocnc…

Comment on Internet to Serial Proxy by Kevin

Kevin — Tue, 06 Nov 2012 23:35:07 +0000

If I remember correctly, the serial UART have a 128 characters buffer length. So you can’t send longer strings to it.

Comment on Internet to Serial Proxy by Greg Skluzacek

Greg Skluzacek — Tue, 06 Nov 2012 03:55:24 +0000

Kevin, nice work with the ISP. Was wondering if you had plans to implement POST as well as GET, so one can send larger chunks of data? I cant recall off the top of my head what the max number of characters you can submit via GET… but one can definitely send more with POST.
Thanks,
–Greg

Comment on Internet to Serial Proxy by Kevin

Kevin — Wed, 31 Oct 2012 18:51:30 +0000

It’s two thing. One to send something to the Arduino. It’s what you seem to have working. And an other when the Arduino send something to the net. It’s no synchronous communication here.