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Re: Switching a large DC load   [3 Articles]

What is the load? Two or three Amps isn't difficult at all if it is a resistive load, a little more difficult if it is an inductive load. I PWM an 8-Amp 12v lamp (that's warm...

Re: H-Bridge issue

Hi everyone, Please to inform that I manage to make everything run. No more burning MOSFET, diodes, etc. I think it would be most appropriate to share it with everyone. The ...

AD7490 interface   [8 Articles]

Has anyone worked with AD7490, 16-channel 12bit AtoD converter and BasicX? It's got SPI interface so it must be possible to use with BasicX, correct? The whole reason why this...

RE: Digest Number 2889

I also like Advanced circuits. Very good quality and they always deliver ahead of their promise date. Harry _____ From: b...@yahoogroups.com [mailto:b...@yahoogroups.com...

Re: Digest Number 2889

At 5/2/2008 06:49, you wrote: > I'll second the expressPCB option. Their $51 mini-board service works for > me. Free schematic and layout software, online board ordering and 2 ...

Re: Hi all, need some basic help with the bx-24.

Hi Kerry, You'll need to determine the correct com port number in order to download anything to the chip using the USB-Serial adapter you have there. One way to do it is to o...

Re: Flow Meter   [2 Articles]

> Rise & Fall times 2uS max > Max frequency 280Hz > 'K' Factor 1120 approximately > 4.5 to 24vdc (Pull up resistor required) It would be easier to suggest an interface ...

Re: Hardware Help   [5 Articles]

Allyn, I would make the following suggestions: 1. Relays are chattering when large relays are connected to the board Issue 1: Use a resistor and a transistor to drive...

Re: Need faster code help

Jim, since the command you send, the echo you receive, and the command response data are all terminated in a CR, why don't you use them to steer your code? Clear the caches, i...

Re: DAC code needed   [2 Articles]

> ... I'm trying to interface a 4x20 LCD in 4-bit mode... I see at least three 4-bit LCD examples in Files, Jim: http://tech.groups.yahoo.com/group/basicx/files/Datasheets-App...

Re: Intercept LCD Writes

> ... InputCapture function will only allow me to monitor one line. If you need to essentially tap real time display data, you're right, InputCapture can't do more than one ...

Re: RF Link Issues   [3 Articles]

I tried your example, and still the same result. :( Now if I have the TX side powered down and just leave the TX unit powered and connected to the PC. I get this in the moni...

Re: Re: Kalman Filter Code

Thanks Tom. That helps. I may get back to you with more questions, once I am up to snuffs with the code and my balbot project, but I am getting close. rgds --ray ----------...

Re: Kalman Filter Code

Kyle Vogt has not been active here for several years, Ray. His Kalman code was posted in 2003. I can help answer some of your questions. Sparkfun's accelerometer/gyro breakou...

new gyro from analog devices

I'm building a balancing bot and I just saw this new gyro by Analog Devices that will come out in a few days. There are three choices for sensitivity settings as opposed to on...

Re: driving a 24v relay/transistor

I was on a project where we used TIP 120 I haven't had the chance to really look at how the outputs are set up, on the chip you are using, but we were using a 2n2222 tied to a tip ...

Re: Random Doesnt Stop well multi Tasking

This problem reminds me of a similar problem that electronic encryption equipment suffered from in the very early days of semi-conductor revolution. It became apparent in the...

Job offer " Design contest"   [2 Articles]

Moderator's note: The following message asks for a detailed product design (for $300?!) in the form of a "contest". For $300?!; I guess mechanical engineering does not pay well. ...

Encoder (quadrature) IC w/SPIi intreface   [2 Articles]

Hi Does any body knows about a small encoder (quadrature) to spi interface ? to connect directly between the encoder and the BasicX ? I'm trying to make a small servo syste...

SPI versus I2C   [2 Articles]

Hello fellows Even though a bit out of context: I'm finding some difficulties with learning the SPI protocol... Some of my basic questions: 1- Did any of you set two machines t...

A bit off-topic, but it is BX related...

I'm working on a small device that will be entirely enclosed and sealed. It will use a BX-24 (or chip only version) and a low power radio xmitter. The idea is that each device will...

Has anyone used a Ramtron SPI FRAM?   [4 Articles]

I'm looking to increase the amount of RAM that my LCDX has so I can receive RS232 messages as large as 4K (Since the BasicX only has 400 bytes of RAM, this is a problem). The ...

RE: Re: Power through slip rings   [2 Articles]

Tom, What is the peak and average current you need at 5V? Could you spin a rechargable battery and charge it through the rotary transformer? Tom W. -----Original Message----- ...

Re: Trouble with MIDI serial communications.

Tom Becker had a good idea to place a resistor to ground from the base of the 2nd darlington transistor (internal to the Opto-isolator) to sharpen the rise time. It did in fact...

Re: MUX

--- In b...@yahoogroups.com, "davidsousamendes" wrote: > > Hello > I need to multiplex one of the ADC pins of BasicX in order to receive > signals from 4 analog devic...

Re: Slow BLDD motor drive

> ... One of the sticking points of using Brushless motors for robotics is the relative expense and complexity (compared to brushed) of the controllers... I agree, and I th...

Basicx and AD7710

Hi everyone. I'am trying to make a Basicx BX24P and an AD7710 A/D from Analog Devices to communicate but I am having troubles. Did anyone has experience on this matter ? The...

Re: 9600 hz oscillator with the bx-24?   [3 Articles]

thanks, Tom, for the routine. that's REALLY helpful. i just couldn't figure out how to configured the TC like that. the plan is to set pin 25 oscillating, then connect it to pin ...

=?iso-8859-1?q?Micromega_=B5M-FPU_V3_on_a_BX-24?=   [2 Articles]

I've uploaded a Basic-X project that provides easy function code timing on the µM-FPU V3 when it is connected to a BX-24 via SPI. An image of the project breadboard is in the gr...

Micromega uM-FPU V3 on BX-24 via SPI

FYI, I've hung a uM-FPU V3 on a BX-24 (and -p) via SPI, and am decoding NMEA to floats on it. Very nice. There is a new Yahoo group for Micromega FPUs. http://tech.groups.ya...

RE: Please help? LCD+ with Keypad

What error do you get? Are you certain that the keyboard is connected correctly? Did you add LCDXlib or similar library to your project? First call LCDinitialize and then call ...

Re: accurate digital to analog conversion

I can recommend the Analog Devices AD420AN-32 4-20mA or 0-5VDC DAC chip. As components go its on the expensive side, $12 - $18 depending on quantity, but it is a rock solid compo...

Re: ULN2803a best practice

Hi, For your information and consideration. I am using the BasicX in my projects and right now I am driven six solenoids 24 volts - 2 amps using 6 TIP121 darlington tran...

Servo & logic power   [2 Articles]

For a crude prototype I used an alkaline 9v battery and regulated that down to 5v with a 7805. That sufficed (six hours, anyway) while the project only drew 30mA. I needed ...

Re: Multiple Outputs

Since your update rate is immaterial, I'd use a shift register. If you can work with SMDs, the MAX4820 is a single-part, 8-channel solution, so four cascaded parts will drive ...

Parallax Hitachi H48c Accelerometer

Hello all, I have been working for some time now on interfacing this accelerometer to the basicX-24. It is giving me real troubles. They show the source code in Pbasic and th...

SPI bus length?   [2 Articles]

I have a dilemma: I need a fast compass in a complex motorized device but the motor magnets (which move within the project as the project moves over Earth) disturb the compass ...

ATMEL 24C512 EEPROM Problem   [2 Articles]

Hello, I am trying to access an ATMEL 24C512 EEPROM and am having quite a bit of difficulty. I think have everything wired correctly and the BX24 seems to be sending out th...

Servo Motors   [2 Articles]

Hi everybody, I have 2 of the servo motors that I got off the BasicX website and put them on my robot. I programmed both of them to go forward and there spinning. Also...

Re: Re: Keypad to PC interface

Mark, One thing I have seen that may be of use is the USB to PS2 connector. Ther= e are lots out there that allow you to use a PS2 connector into a USB socket. You want the ...