Recent content by RonHackett

The Pi i2c bus is running at 100k - here's a snapshot of a logic analyzer trace (pi sent value of 65): I just set up two 20X2's, and used the code example in Section 2 of the Manual. It works fine, so I'm assuming there's some sort of compatibility problem between the Pi and the 20X2. I'll...

I've been experimenting with a simple parallel task program, and I get some strange results with the pause command. For example, I've been using an 08M2 breadboard circuit with an LED and current-limiting resistor on pin C.4, and a logic analyzer to observe the duty cycle of the output wave in a...

I've been using a simple 08M2 program to measure the voltage levels produced by the daclevel command. The circuit uses a +5V regulated power supply (actual V+ = 5.08V), and the AXE027 cable for programming the 08M2. I'm not using an op amp - just a DVM to measure the voltage at the DAC pin. For...

In a previous thread (READINTERNALTEMP RAW clarification needed, Started by premelec, 05-12-2011), Hippy wrote "The IT_5V0 and other options apply an appropriate equation which converts the raw temperature reading to an approximate temperature for a specific voltage and an offset can be applied...

I've been playing around with the 20M2 Time variable, and I'm getting some strange results. In Section 2 of the PICAXE Manual (enabletime and disabletime docs) it states that the time variable will increment at speed multiples at 8MHz and 16MHz, i.e., twice as fast (compared to 4MHZ) at 8MHz and...

Three or four years ago, there was a thread about using the 20M serial output pin as a regular output (http://www.picaxeforum.co.uk/showthread.php?9170). At the time, there was some question as to whether the untested code (suggested by Hippy and Technical) would actually work. I've done some...

I have been playing around with using the table command to store string data for outputting to an LCD, and I have found that it greatly increases the program download time on 14M2 and 20M2 processors, but not on the 20X2. At first I thought that it was because I was using a fairly large amount...

I have been playing around with the 14M2 storage variables and indirect addressing, and using the Terminal Window to observe the results. I'm having a weird issue that I hope someone can either confirm, or explain what I may be doing wrong. The easiest way to illustrate the issue is with a...

Hi All, I haven't been able to get the optional timeout for the serrxd command to function correctly on any of the M2 processors. The following code works as expected with a 20X2, but all the M2 processors seem to skip right past the timeout (and fail to update the variables correctly). ' ===...

I have been experimenting with the 18M2 touch sensors, and found something interesting. If I connect a simple jumper wire to one of the touch inputs, and dip the other end of the wire into a glass of water, the touch16 result immediately drops to 0. As soon as the wire is removed from the water...

Does anyone know of a PICAXE user's group in the New York City area? If not, is anyone interested in seeing if we can form one? It would be great to be able to get together (in physical space as well as cyberspace :-) and share projects, etc.

In an earlier thread I stumbled on the fact that enablebod and disablebod are actually inverted in the 28X1, which Technical confirmed and said would be fixed in the next software release (see http://www.picaxeforum.co.uk/showthread.php?t=9551). I'm still working on ways to reduce power...

I have been working on ways to reduce the power consumption in 28x1 circuits for a battery-powered data-logger, but I'm having difficulty getting the 28X1 (rev 2) to run properly at the internal 31k speed. For example, here's a super-simple "Hello World" code snippet that works at every...

I have been testing the 28X1 current consumption at various processor speeds, and I'm getting some confusing results. As expected, supply current varies directly with processor speeds, but I consistently get lower readings with BOD enabled (vs. disabled). My understanding is that the reverse...

I have been searching for the answer to this one in the archives, but to no avail :-( Is there any way to have two instances of the Programming Editor running simultaneously? I am working on serial communications between an 08M and 18X, and I would like to have one Editor setup for the 08M on...