Recent content by moey

I use a couple of DS18B20 temp sensors for my pool solar heating controller. An 18X compares the roof sensor with pool sensor and turns the pump on&off when needed. A couple of things I'd to ask the forum. 1. The cable length to the roof sensor is about 10m so you wouldn't expect much voltage...

I am using the output of an 08M to pull low the Reset input of an 18X. I found that I was getting false resets. The 18X was resetting at random times when I was sure the 08M output has not fired. To test, I disconnected the two Picaxes at the 08M end, just leaving a 2m long wire connected to...

Hi Hippy, Normally I'd search the forum before asking, but forum search is still crook. I'm using your 18X LCD setup and have now added a DS1307 clock chip. Small problem, the standard Hippy LCD code doesn't like the i2cslave command which initialises the DS1307. (i2cslave %11010000, i2cslow...

Is it just me, or is Forum Search not working. I get this: "Microsoft OLE DB Provider for ODBC Drivers error '80004005' [Microsoft][ODBC Microsoft Access Driver] The Microsoft Jet database engine stopped the process because you and another user are attempting to change the same data at...

I'm new to eeproms and I just don't get it. Trying a 24LC256 with 18X. There's no problem in writing and reading on value at a time, but I just can't successfully write and read 2 variables at once. I would expect the test code below to look like this when reading the eeprom. (Or something...

Hi Technical, I'm keen to reduce the power consumption of 08Ms in Sleep mode, (for battery powered RF jobs). The lowest I can reduce current consumption in Sleep is 0.65mA using a low current LM2936 regulator and have followed the advice of previous posts - such as pulling unused 08M inputs to...

This is driving me nuts! We have a "directional" door buzzer on the front door at work. It's a handful of relays and a timer that works with two sets of IR beams aimed across the door. Basically, when you walk IN (beam1 followed by beam2) the buzzer sounds until we reset it by...

Hi Hippy, Regarding your 2 wire LCD interface http://www.hippy.freeserve.co.uk/picaxe2l.htm Using an 08M and 74HC164, I can't get it to work using pin2 (leg 5) as the CLK pin. It works fine using pin0 or Pin4. (Am using pin1 for DAT). When I connect Pin2 to CLK, the LCD just sits there and...

Hello Technical Using Prog Editor 4.1.1, when I check the firmware version of a couple of 18A chips the result is: "Firmware Version 5.4 (Picaxe 18A firmware version 4)" I suppose it's fairly clear that the Picaxe is V4, but I was thrown off by the "5.4". What does that...

All the documentation says that 18A's don't support Readtemp12. Yet the revision notes for the version 4.1.10 Program Editor says... "Added compiler support for new commands added into updated release firmware: - 18A v5.4 or later - sertxd, infrain2, readtemp12, count"... Technical...

Technical, the manual says that readtemp12 will not to work 8MHz. I am reading a DS18B20 and displaying it on LCD. Changing the clock speed to 8MHz (setfreq 8m) seems to have no detrimental effect on readtemp12, it still reads the sensor correctly. The setfreq 8m command has definitely been...

I might have overlooked something pretty basic, but I thought a Picaxe output (18x in this case), once turned ON, stayed ON until told to turn off. I have a situation where an output turns off while the code is off doing other things. I have prototyped a thermostat project. - Reading...