Accelerometer | ADC | ADXL | Adxl20 | AVR | BasicStamp | BX-35 | BX28 | BX35 | COM3 | Compiler | Downloader | EEPROM | Electromagnet | GetADC | GP2D1 | GPS | I2C | IDE | Keypad | LCD | LCD+ | MIDI | Motors | Multitasking | Netmedia | Networking | PCB | PID | PlaySound | PWM | Relays | RTC | Servo | ShiftOut | SitePlayer | SPI | Stack | Timer | USB

Keeping track of date and time

And yet another question: In my code: Call SPICmd(1,1,sent_bytes(1),1,received_bytes(1)) Call SPICmd(1,1,sent_bytes(2),1,received_bytes(2)) Call SPICmd(1,1,sent_bytes(3),1,re...

BX24 hangs on a simple(?) sub call   [3 Articles]

Hello All, I'm new to hardware related programming but have some basic experience with programming in general. I am writing an interface to control an Audio ADC chip (TI's PCM42...

Minimal Circuit for BX-24   [3 Articles]

I have tried to design a board that is very small. I'm trying to use a=20 RadioShack 276-148. This board is 1 =BE inch square. All power and=20 sensors output will be done thr...

Re: BX-24 Input Impedance for ADC conversion of small 50 Hz Voltage   [13 Articles]

Hi, I checked the sensor output and I could not=C2=A0 come up if the voltage ou= tput was Dc or AC. Since they are using +5 in the power supply I assumed th= at is DC. =C2...

Re: Forum status

Hello Tom, Thanks for this message. This is how I see a Forum, a place where people discuss something of common interest and where every body can participate to the discuss...

Re: GetADC Procedure Float Version and Function (Integer Version) BX-24

> My question is to know what is the fastest way to get A/D Value, the Float version or the [Integer] version. Integer is faster - and different. The float value is derived ...

BX-24 For Next Error   [4 Articles]

Hello, I wrote the following program to read a value on the ADC Port and convert it to RMS value. I have an error at the line Next K and I cannot find the reasons. Can someo...

Re: ADC Help   [2 Articles]

Hi, Did you check the voltages at the pin 13 and 14. Make sure that you have voltage. It is possible that your op amps are not working right. Also you can tried it using a volt...

Re: Data Logging   [2 Articles]

Three things. 1. Is Spin and ADC value? If so why don't you save your values as integers and convert them to singles when you download the data? That would double your storage s...

Re: BasicX-35 RAM Expandable?

--- In b...@yahoogroups.com, Tom Becker wrote: > > > ... it's not entirely clear from my cursory check of their website, > but does the X-35 and X-01 support floating p...

RE: Re: BX24 to PC - Extra character

Tom, =20 I tried that and that is where it is set now. Actually I'm getting two extra characters ENQ and 255. To "fix" it for now I just filter the buffer thru a non-alpanume...

RE: Re: Flow Meter   [6 Articles]

What I would do is run the pulses through a simple transistor and RC networking feeding an OPAMP turning them into an Analog Voltage that could be measured on any of the 8 ADC pi...

how pass ADC contents to Timer/Counter   [2 Articles]

Hello, my new group!!! I write from Italy, so excuse my grammar mistake... I' ve already a nice question for you... How can I pass the contents of ADC's registers (ADCH and ADCL...

Re: Connecting eb500 to bx24 HELP

Ok, I added my program to the code. This s it dim outputBuffer(1 to 10) as byte '1-byte output buffer dim inputBuffer(1 to 13) as byte '1-byte input buffer 'declare an array o...

Re: Reading voltage higher than 5V   [5 Articles]

> ... three resistors of 1 MOhm each... The values are too large for the input impedance of the ADC; Atmel recommends that the source impedance be on the order of 10k or low...

Re: Kalman Filter Code   [3 Articles]

Im really struggling to get this to work with ADC accel unit (im using 5dof board from sparkfun). Anyone sucessfully got this working using ADC gyros and accellerometers rathe...

Re: Re: RF Link Issues   [2 Articles]

Did you try connecting the RX data pin to a BX24 input pin? Com3_Out ----> TX 'Transmit the byte RX ----------------> Com3_In 'Receive the byte Com3_in -------> Debug.Pri...

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: Kalman Filter Code   [2 Articles]

I see this code is for PWM generating sensors, have you tried this code with ADC type? Cheers Ben ...

Ultrasonic position sensor   [2 Articles]

I am in the process of designing an ultrasonic position sensor, which I will use to periodically re-zero the drift on an accelerometer based position sensor. I am trying to de...

Problem With ADC Converters

Hey, I'm having a problem with ADC on pins 13, 19, and 20. When connected to something they yield an output of around 900-910, and when allowed to float they output 1024. The ...

Re: PID Question   [3 Articles]

Even a bare bones PID program would work. Where ADC is used, then the PID process is used and I can vary the gain for each. I am sure I can figure out the rest. Anyone know ...

MUX   [4 Articles]

Hello I need to multiplex one of the ADC pins of BasicX in order to receive signals from 4 analog devices...(Of course using 2 digital pins for address purposes) Can anyone s...

BX-24 diagnostic?

I have a small pile of BX-24s that I've set aside as I've suspected that each had developed an apparently bad pin. I have surely smoked a few processors but others, I'm sure, ar...

Re: Re: Micromega =?ISO-8859-1?Q?=B5M-FPU_V3_on_a?= =?ISO-8859-1?Q?_BX-24?=

> ... anything greater requires a Gaussian elimination or singular > value decomposition routine. Does the µM-FPU chip have matrix > inversion functions for matrices greater t...

Re: Optocoupler 4N25 Help

> ... MCC USB DAQ modules? Nope, but I've used several other Measurement Computing adapters and ADC boards. I've had good success with them all, although the bit-level pr...

Re: Re: Servo & logic power   [4 Articles]

In an attempt to predict imminent battery depletion, I tried differentiating the battery voltage samples to determine the discharge slope. That didn't work, principally becaus...

CpuSleep

Hello, I'm a new user of Bx24 and I have ploblems with the instruction CpuSleep. In my program I am using com1, and com3, and 2 pins are ADC. I would like to call CpuSleep afte...

basic input problem   [4 Articles]

I am a basic beginner I have a small problem and hope that it would not be too disturbed. When I put the varied voltage into any ADC pin, i dont know why the other ADC pin are...

Re: Sensing movement with GP2D12 IR sensor

Hi Ellen, Something sounds amiss, I think you are right in expecting better stability form your system. I would suggest a 2 step approach: (disconnect the GP2D12) 1) Make a...

Measure Battery Voltage   [3 Articles]

Please disreguard the previous post Here is a better version of what I need to do. The only problem I am having now is that the displayed value is not tracking the measured ...

Please help   [6 Articles]

I am trying to measure 10 - 15 volts. I have the following program '-------------------------------------------------------------------- ' This program will measure the battery...

Sampling program that hangs for 1.18sec every minute?

Hello, I was hoping someone might have some idea what is going on(that might want to help out :) ). I'm using the basicx to sample at about 25Hz 2 channels, and write this is...

Re: Sinking capacitors   [2 Articles]

Tom, your suggestion to try an H11F1 optoFET to switch caps was helpful; thanks. For the PLL, I was able to find a fixed filter that works very well without switching, fortunate...

Re: code timing (was ADC sampling)

Tom, Thanks again for your quick reply. The timestamp I would like to keep track of would not be to prove the sampling rate, it would be for data processing later on. I am wr...

Re: Re: code timing (was ADC sampling)

> ... the size of the ticks gets very large... I suggested that you tag sample pairs with a timestamp so that you could prove, or analyze, the sampling rate later. Since you ...

Re: code timing (was ADC sampling)   [3 Articles]

Hey Tom, Thank you for your help and suggestions. I took out the ascii conversion. and I'm currently using this code to write to my sdcard: Do Until (GetPin(8) = 0) ADCdat...

Queues of a different type

Queues are our friend. They're great for moving data around efficiently. Do they only work for byte types? I can compile an application using integers in a queue array and I ...

Expanding inputs   [6 Articles]

I've been struggling with this one for a few days, to no avail. I have a bunch of analog sensors that I read with GetADC(). Each sensor going to a seperate pin. Some of the s...

Re: Analog to digitial conversion of input signals   [4 Articles]

I think you got your answer, along with a bit more than necessary. But, here is a simple piece of code. Sub Main() Dim ADVal as Integer Do ADVal = GetADC(13) ...