driving a 24v relay/transistor

Started by Chris in BasicX14 years ago 10 replies

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 ....

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

Started by Gary Tolley in BasicX14 years ago 3 replies

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...

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?

Started by impulsum in BasicX14 years ago 9 replies

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...

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

Started by ephimarginatus in BasicX14 years ago 4 replies

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...

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

Started by toahatt in BasicX14 years ago 15 replies

--- 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?

Started by spillikinaerospace in BasicX14 years ago 4 replies

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...

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

Started by David Sousa Mendes in BasicX14 years ago 3 replies

What's a swamping resistor?!?

What's a swamping resistor?!?


Optocoupler 4N25 Help

Started by "David E. Basile" in BasicX14 years ago 10 replies

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...

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

Started by abefanning in BasicX14 years ago 9 replies

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...

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

Started by "David E. Basile" in BasicX14 years ago 4 replies

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...

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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