bill.french's Content
There have been 260 items by bill.french (Search limited from 29-June 23)
#7932 About the forum (hard to read this theme)
Posted by
on 19 January 2011 - 08:26 PM
in
General Discussion
You could vote, here:
http://forums.netdui...ch__1#entry3998
#8692 Switching AC
Posted by
on 30 January 2011 - 02:33 PM
in
General Discussion
I'm using this for my sous vide controller: (i use a transistor to control it from the netduino)
http://powerswitchta...om/default.aspx
I had a 16hr steak and eggs for breakfast!
What are you working on?
http://powerswitchta...om/default.aspx
I had a 16hr steak and eggs for breakfast!
What are you working on?
#4748 want little help
Posted by
on 09 November 2010 - 06:08 PM
in
General Discussion
You could use something like this with the netduino:
http://www.parallax....83/Default.aspx
to sense the motion, which could then alert something to start recording, or raises some other sort of alert.
http://www.parallax....83/Default.aspx
to sense the motion, which could then alert something to start recording, or raises some other sort of alert.
#6383 picoUPS -- tiny uninteruptable power supply
Posted by
on 22 December 2010 - 06:31 PM
in
General Discussion
I used one of these in a project at work:
... it basically lets you build a small 12v uninterruptable power supply, using a 12v battery, which it charges. In case it's useful for anyone!
... it basically lets you build a small 12v uninterruptable power supply, using a 12v battery, which it charges. In case it's useful for anyone!
#5883 A First Project
Posted by
on 07 December 2010 - 09:34 PM
in
Netduino Plus 2 (and Netduino Plus 1)
For temperature for a beginner, I imagine you'll start with a thermistor, check out this post:
http://forums.netdui...ch__1#entry4703
-- You can replace the potentiometer with a thermistor; all of this stuff should be available at radio shack; what country are you in?
#11580 Trenton Computer Festival this weekend!!!
Posted by
on 02 April 2011 - 01:47 AM
in
General Discussion
Hi there, I haven't been hanging around the forum as much, but have been busy, busy, busy! With Netduino projects and other things.
Anyway, this weekend is the Trenton Computer Festival! (in Trenton, NJ) There's going to be an all-day "Arduino Workshop", which could be of particular interest, including an open hack time, which I'm hoping to bring my Netduino+ to.
Also, the flea market has traditionally had a wider variety of computer stuff, some older stuff, junk, etc. -- as compared to most computer flea markets.
Either way, everyone enjoy your weekend!
Anyway, this weekend is the Trenton Computer Festival! (in Trenton, NJ) There's going to be an all-day "Arduino Workshop", which could be of particular interest, including an open hack time, which I'm hoping to bring my Netduino+ to.
Also, the flea market has traditionally had a wider variety of computer stuff, some older stuff, junk, etc. -- as compared to most computer flea markets.
Either way, everyone enjoy your weekend!
#5786 Serial Communication via D0 and D1
Posted by
on 05 December 2010 - 10:58 PM
in
Netduino 2 (and Netduino 1)
I'm trying to get this onewire to rs232 device working, and of course it's not... 
For serial, using D0 for RX (hooked to TX on my device) and D1 as TX (hooked to RX on my device), do I need anything other than:
... and then I can read and write using s1.Read and s1.Write?
What does .Read do if there's no data there? Does it just wait? Return garbage?
I'm getting data via s1.Read with nothing even hooked up to the netduino.
For serial, using D0 for RX (hooked to TX on my device) and D1 as TX (hooked to RX on my device), do I need anything other than:
var s1 = new SerialPort(SerialPorts.COM1, 9600); s1.Open()
... and then I can read and write using s1.Read and s1.Write?
What does .Read do if there's no data there? Does it just wait? Return garbage?
I'm getting data via s1.Read with nothing even hooked up to the netduino.
#5794 Serial Communication via D0 and D1
Posted by
on 06 December 2010 - 02:50 AM
in
Netduino 2 (and Netduino 1)
OK I figured it out... I was receiving 4x more bytes than expected because the onewire->rs232 works in a completely unexpected way. Even once I disconnected the device, the uart still had data in it.
So, when I ask it to read a byte, it returns the byte represented in hex using ascii characters...
So, if I was expecting just this byte: 11111111 (in binary) (255 in decimal) (FF in hex)
it actually sends the ascii character F twice followed by linefeed and carriage return, for a total of four bytes.
#7636 Question about COM2
Posted by
on 14 January 2011 - 06:05 AM
in
Netduino 2 (and Netduino 1)
Staring at Tecchie's Pinout Cards tonight, a question popped in my head:
If you are using COM2, are D7 and D8 (rts/cts) unusable for anything else? Or can the still be assigned as input/output ports?
If you are using COM2, are D7 and D8 (rts/cts) unusable for anything else? Or can the still be assigned as input/output ports?
#8170 LEDs for netduino
Posted by
on 23 January 2011 - 02:39 PM
in
General Discussion
You can use a plain old NPN transistor, which is fun to use if you want to learn about transistors, anyway. I've used various leds with 220ohm resistors on various ports without and problem so far for testing, but your mileage may vary!
I'd like to find a source for leds with resistors built in.
