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LEH, When I download PE using firefox or Chrome there is no finish button/icon to click and the download runs to completion. My guess is that by clicking the finish you could be cancelling your download. Try just clicking download and letting it run to see if the download ends. If that...

If you were able to program all three chips in the board you made for testing then that indicates to me that there is nothing wrong with any of the three chips and the reason that two of your chips don't behave as you expect when you plug them into the target board is likely something other than...

(y) I've no experience using external EEPROM so I can't help with this.

@bpowell, That is not how I interpret the documentation. The online manual for the BOOT2IC command documents how the command works and which chips support the BOOT2IC command: "On X2 parts it is possible to update the internal program by copying a new program from an external i2c EEPROM", and...

@Buzby, #slot - BASIC command The 14M2, 18M2+, 20M2 parts 2 slots It is the 28X2 & 40X2 chips that have the i2c slots 4-7 and the 08M2 & 20X2 are not listed as having more than the single slot 0. Cross-posting this info here for people who find this thread first.

@bpowell I couldn't find anywhere in the pdf manual where it describes how many slots each chip supports. It's always a good idea to check the online version of the manual as it is more up-to-date then the pdf manual. #slot - BASIC command 14M2, 18M2+, 20M2 parts - 2 internal slots (0-1) When...

Baayside888, here is something to get you started with your project: This thread posted about a PICAXE datalogger program Simplest Datalogger and the details of that project are on this web page Picaxe Simplest Datalogger

Peg, For my testing I've created this simpler version of the program that just increments the count every 1 second, so try loading this onto your 20M2. symbol lcdPin = B.4 ' Define LCD output pin b0 = 0 ' Initialize counter variable main: serout lcdPin, N2400, (254, 1) ' Clear LCD...

Peg, The text you write to the LCD is written at the current cursor position. The serout (254,1) command clears the screen and sets the current cursor position to the first column of the first row. The code you put into this thread in posts #1 and #4 and the code The Bear put into post #5 all...

peg, The AXE133 manual specifies a 'pause 30' command after sending 254, 1 to the LCD: 254,1 Clear Display (must be followed by a ‘pause 30’ command) The LCD takes some time to execute the 254,1 command and will not respond to any commands that are sent too soon after 254, 1 so try adding the...

Aries, A timely warning of something that will affect a lot of PICAXE uses as they upgrade or move to Win11 PCs. I had seen it reported that wordpad was being removed from Win11 but I was not aware that it was going to prevent me seeing my preprocessor output in PE.

Put the full path to the include file:

radiosparks, I've only used PEBBLE on stripboard and here are my votes: I use the three offset options "On the line", "1/3 space above left" and "1/3 space below/right", so I vote for all these to be kept as they work in the original. I've never used insulated corners and can't think what I...

These 4K7 resistors are only required when using the PICAXE I2C pins SDA & SCL, so the are only neeeded when using the PCF8574-I2C backpack to drive the LCD. When driving the LCD directly from the PICAXE chip in 4-bit or 8-bit mode there are no 4K7 resistors needed. My guess is that the...

Dalenrose, The fact that "The line of rectangles does not disappear" for the 2nd test in your post #6 indicates that the I2C communication between the 20M2 chip and the PCF8574-I2C backpack is not working. Inglewoodpete has definitely spotted an important difference between the PCF8574-I2C...

Dalenrose, Where I said "You should see two lines of black rectangles on the LCD display" I was wrong. Inglewoodpete is correct, with the SDL & SCL lines disconnected you should see one line of black rectangles when you turn power on to the LCD. - This indicates that there is nothing wrong with...

@Delenrose, I can see no issue with the wiring and pgm. This is not surprising as they are both pretty simple. However, I should have started with more basic LCD debugging. Pls disconnect the SCL & SDA wires from the backpack and then turn the power off and back on so that the LCD does it's...

Dalenrose, The PCF8574-I2C version has the fewest wires so let's investigate that first. Pls post a picture of your whole circuit. i.e a picture that shows the PICAXE chip, the power supply wires going to it and the wires connecting to the PCF8574-I2C backpack. A copy of the Hello World”...

Ben, The symptoms you describe match what can happen when the baud rate you are using in PE does not match the baud rate being used by the PICAXE chip. Also from page 219: "The baud rate is fixed at 4800,n,8,1 (9600,n,8,1 on X2 parts)" What is the baud rate you have set in the PE Serial...

This "Edit Thread" option will allow you alter text of the Subject line for your thread, so you could add "[SOLVED] " to the start of the subject.