Forums More basicx
driving a 24v relay/transistor
inI have to control a few 24v light bulbs using pins on the BX24. I'm wondering if there is a transistor I can use to power the bulbs directly ....
I have to control a few 24v light bulbs using pins on the BX24. I'm wondering if there is a transistor I can use to power the bulbs directly . The bulbs draw 208ma.
FTDI chip work as a com1 device
inHi everyone, I just had to do an upgrade of my motherboard, but I overlooked one little thing, it didn't have an RS232 header. I found this...
Hi everyone, I just had to do an upgrade of my motherboard, but I overlooked one little thing, it didn't have an RS232 header. I found this device, and the circuit seems straight forward, but I would like to know if it can be setup as a com1 device? If it does, i'll start making an internal adapter based off of the FT232RL device. Thanks Gary T ----------
USB Drive Interface?
inI am wondering if anyone has any information on interfacing to a USB Jump Drive? (Thumb Drive, Flash Stick, Mem Stick, whatever you want to...
I am wondering if anyone has any information on interfacing to a USB Jump Drive? (Thumb Drive, Flash Stick, Mem Stick, whatever you want to call it) I have see several posts throughout forums like this one about using devices to access SD and CF cards, but not USB. Can it be as easy as using a TTL or RS232 to USB convertor and just knowing the right commands to read and write files i...
RS232<->RS584 converter
inhi, i want to connect a sensor that has an output in RS485. What is the Maxim part to convert that to RS232? Or other brand parts... thanks for...
hi, i want to connect a sensor that has an output in RS485. What is the Maxim part to convert that to RS232? Or other brand parts... thanks for your help
Re: Parallax/Hitachi HM55B Compass Example
in--- In b...@yahoogroups.com, "tombhandley" wrote: > > I've posted a Parallax/Hitachi HM55B Compass module with a test > example,...
--- In b...@yahoogroups.com, "tombhandley" wrote: > > I've posted a Parallax/Hitachi HM55B Compass module with a test > example, calibration routine, and instructions on my web site at > [HM55B.zip]: > > http://home.comcast.net/~tomhandley/bx-24/bx-24.html > > - Tom > Anyone got this saved? We are working on trying to calibrate our compass (HM55B), but no luck so far
9600 hz oscillator with the bx-24?
inHello can anyone tell me what's the simplest way to make a 9600 hz oscillator with the bx24? the built-in timer apparently can't do it. maybe...
Hello can anyone tell me what's the simplest way to make a 9600 hz oscillator with the bx24? the built-in timer apparently can't do it. maybe i can manipulate com3 into doing it if i set it at 19200. but does the com3 protocol include a start bit? hmmmm.... thanx anyone, louie
Swamping resistors, a bit off subject
inWhat's a swamping resistor?!?
What's a swamping resistor?!?
Optocoupler 4N25 Help
inI'm trying to hook up an Optocoupler and I'm not having any luck. It is a 4N25 and the output always stays high. I took a schmatic from another...
I'm trying to hook up an Optocoupler and I'm not having any luck. It is a 4N25 and the output always stays high. I took a schmatic from another site to set it up and maybe it's not right for my application. I have the output of my device 12v going to a 4.7k resistor to pin 1 and pin 2 is grounded. I have 5v tied into a 10K resistor and tied to pin 5. Pin 4 is grounded. As I monitor pi...
Multiple Outputs
inAm trying to build a simply irrigation controller with 25 zones. Each zone would be sequenced on for about 15 minutes at a time until all 25...
Am trying to build a simply irrigation controller with 25 zones. Each zone would be sequenced on for about 15 minutes at a time until all 25 zones were activated. I am controlling each zone with a Rayex LU-5 PC mount relay, that has a coil voltage/ohms of 5VDC/125 ohms. What is the most reliable way of controlling these 25 relays with the BX-24? I've already tried, a bit quickly,...
ULN2803a best practice
inI'm getting back into the BasicX and old age keeps me from retaining a lot of information . I have a a ULN2803a and I'm trying to fire some...
I'm getting back into the BasicX and old age keeps me from retaining a lot of information . I have a a ULN2803a and I'm trying to fire some 24vdc air valves so I have a few questions. I'm not sure what the current rating on the valves are 1) I have several 12vdc relays and I'm wondering if it would be better to drive the relay to trip the valve or just use the 2803 to drive the v
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