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My DMM window goes like this after I open it the second time. Is that normal? Version 1.0.2

Hi All, I'm trying to investigate the possibility of making a chronograph capable of measuring projectile speeds up to 5000 fps. In another thread Hippy suggests using the external counter mode to count a clock signal generated while the projectile is between the two sensors. I'm trying to...

I've had my first program exceed the size of slot 0 and have split the main loop out into slot 1. It seems that issuing a hsersetup command only in slot 0 doesn't allow background serial to be received in slot 1. Are there other commands that need to be issued in both slots?

Hi, I'm having trouble with timer interrupts again with my 28x2. The interrupt code is below. Is there anything wrong with it? I have it set for 100 interrupts per second to do some slow PWM while the rest of my code keeps going. After running OK for approximately 5 minutes, the second_counter...

Is there an alternative RTC I can use in the AXE033 module that uses a different i2c address to the DS1307? I have a MCP3424 ADC on an Arduino shield with both address pins pulled low giving the same address as the DS1307.

I hope to use two separate modules that use i2c interfaces. Both have 4K7 pullup resistors on the data lines. Should I remove the pullups from one module or will it be ok? I'll probably be using i2cslow.

I am trying to test some serial code in one of my projects and need to be able to send some commands to the picaxe. The picaxe is expecting commands which end with a new line byte (ASCII 10) rather than a carriage return + new line. Can I do this from the serial terminal in PE?

1. I'd like to be able to change the width of the panel on the right side that shows the symbols etc. It a pain having to scroll across to see all the text when using long symbols names. 2. I'd like a window showing all the general variables available for the selected chip with something to...

Hi, Has anyone interfaced the TCA 785 phase control IC (or similar?) with a picaxe? http://docs-europe.electrocomponents.com/webdocs/002d/0900766b8002d06b.pdf Are there any better alternatives than this IC?

Hi, I have some code which reads some i2c chips, does a few calcs and sends some serial data to a PC. The i2c reads and calcs could take up to 500ms. This runs in a 1 second loop controlled by the timer variable. I'm not using interupts, just waiting until timer increments before looping...

Hi, What does the refresh button do in the serial terminal in programming editor? I have code that sends data to the PC via the programming cable using hserout and sometimes the serial terminal starts displaying semi-gibberish data. Clicking refresh fixes the problem for a while. Any ideas?

Hi, I'm having a serial communications problems with a picaxe 28x2-5v and the serrxd command. I have some code running in the http://processing.org/ environment which sends a serial command to my picaxe using a usb/serial programming cable and the programming pin. 9600 baud. When this...

Hello. I have a MCP3424 which is a 4 channel ADC chip and it's on an arduino shield that I recently purchased. Info re TC4 shield: http://www.mlgp-llc.com/arduino/public/arduino-pcb.html MCP3424 Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22088c.pdf I am trying to write to the...

Hello, I have a triac phase controller circuit where I have replaced the control potentiometer with a 500K light dependent resistor coupled to a LED in a sealed tube. I am PWMing the led to change the LDRs resistance and the universal motor's speed. The problem is a linear change in the PWM...

Hello :) On a 28X2 I can use the timer overflow interupt to run a portion of code at set intervals. Can I do something equivalent on an 18X without an external timing circuit?

Hello, I'm planning to build another PID controller for a new hot air coffee roaster I have just built. I'm wondering if I would be better off using an Arduino for this application? Would they make the PID math calcs easier? Unfortunately I know very little about Arduino and their math...

I'm getting errors when reading from the eeprom on my 18X. I'm wondering if I have done too many write/read cycles? When I run this code I get this in the serial terminal. 111 57 223 23 255 253 255 255 231 255 255 255 255 255 255 255 It seems that the eeprom locations from...

I was running the following code in the simulator but it seems to do something funny. When it gets to line 6, the 'exit' command, instead of exiting the do-loop, it jumps to line 11, the 'pause 200' command. The programmed picaxe (18X) works as expected. do if input2 = 1 then...

I've pulled apart one of my old projects to make a few changes but have run into a few problems. This is the original circuit. And i'm adding this to replace the batteries and power a 24V motor. I'm having 2 problems. 1. The diodes on the new board are getting hot when the motor is...

The I2C tutorial talks about the i2c DS1307 clock chip. I bought one from microzed but the data sheet they have on their website is different to the datasheet on the Maxim website. Here it is called a Serial real time clock. http://www.microzed.com.au/PDF/ds1307.pdf and here it is called an...