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Hi Folks, I am playing around with an idea to detect motor stalling when using PWM with a simple 12 VDC permanent magnet motor. Do I have the voltage divider in the right configuration in relationship to the MOSFET? Thanks! Take care, Joe.

Hi Folks, A quick question, please! With the 18M2, can 2 chips share one serial output from a Bluetooth transceiver? Thanks! Take care, Joe.

Hi Folks, Hopefully a quick question about the Picaxe PWM wizard. For my situation, the wizard suggests pwmout 99, 48 for 12000Hz, 12% duty cycle, for the 18M2 at 8MHz, and 99, 52 for 13%. I wrote a line with 99, 50. Does this mess up the way the Picaxe will process that line? Thanks...

Hi Folks, I have been always bypassing the Darlington array on the 18M2 project board when using a MOSFET with the PWM. Can the MOSFET go into the array? Any loss of speed or control, or does the Darlington add some protection to the 18M2 chip? Thanks! Take care, Joe.

Hi Folks, Long story short here, but I would like to try to generate PWM in a negative voltage. I found this: on this page http://www.edn.com/design/integrated-circuit-design/4368224/Voltage-inverter-employs-PWM I am trying to achieve this result for my quirky train project (my...

Hi Folks, I might have damaged my first Picaxe chip today with the TSOP38238 IR sensor. http://www.vishay.com/docs/82491/tsop382.pdf I connected it (all three leads) directly to the CHI030B board, the 'out' lead to pin C.0, and the power and ground as usual, and now that 18M2 chip won't...

One Infrared LED020 with Two Remotes Hi Folks, I am thinking about a two throttle controller with one 18M2 chip and the LED020 sensor for slot cars or model trains. What would happen with signals into one sensor from two separate remotes, possibly simultaneously? Or can 2 separate sensors...

Hi Folks, With the 18M2 project board, the manual says: "The connections marked C.3 and C.4 should not generally be used with the PICAXE system. These are used by the PICAXE chip as the ‘serial in’ and ‘serial out’ PC download connection."...

Hi Folks, I just got an e-mail from Spark Fun about the Simblee Bluetooth low energy board. Is there any way we can use this with a Picaxe? https://www.simblee.com/index.html Or is it just for the Arduino? https://www.sparkfun.com/products/13632 Thanks! Take care, Joe. (edit) P.S...

Hi Everyone, I took the advice from Eclectic and just ordered the Picaxe oscilloscope OSC001 http://www.picaxestore.com/index.php/en_gb/osc001.html (waiting for it to come to the US), but someone not familiar with the device told me that it might not be capable of handling voltages over 5...

Hi Folks, I want to use a Light Dependant Resistor to hold an input pin low when dark. With the 18M2 project board @ 4.5 volts, if the resistance of the LDR is 2 mega ohms (dark), is that sufficient to hold an input pin low by itself? (I don't want to slow down the program with a READADC...

Hi Folks, Just a simple question. Any examples of using the 18M2 chip with the MCP4021 chip? Some sample code and wiring diagram? Many thanks! (Trying to decide if I am up to tackle this type of project) Take care, Joe.

Hi Folks, It is rather simple to do PWM for DC, but is there a circuit and similarly easy way to deliver variable AC? For example, I would like vary the AC from approximately 5 to 18 volts (for AC toy train control) with the 18M2 chip. Thanks! Take care, Joe P.S -- I don't have an...

Hi Folks, I am not understanding the channel vs pin thing with the READADC10 command. Does "readadc10 1,w1" read pin C.2 on the 18M2 Chip? Thanks! Take care, Joe.

Hi Folks, I have been reading over some of the posts regarding back EMF, but much of it is over my head. So far I hope I figured correctly that the first step is to take a reading at the red arrow in my diagram below. I need help figuring the values of the 2 resistors that I assume...

Hi Folks, What are the differences between these 2 boards? and CHI030 aside from the obvious? The second is the one I bought ready-assembled (CHI030) from a started set; the photo on the top is one I just ordered from the net, mistakenly assuming they were identical. The CHI030...

Hi Folks, Very much appreciate all the help I have been getting here. Thank God for beginners luck, because yesterday I had nothing but issues. I have a bad HC-06 module, then the PicAxe was resetting itself, I guess, from electrical noise from the motor (once the motor got up to about...

Hi TexasClodhopper and Premelec, Thanks for the info! So best to just duplicate what the AXE002 board does, with a resistor on each in input pin (to ground) and a Darlington array on the outputs? Thanks! Take care, Joe. P.S. Here is the AXE002 schematic:

Hi Folks, I want to duplicate the circuit I just did on the AXE002 board, and I don't need more than 1 input and 3 outputs, with this 18M2. I intend to program the chip on another board then put the 18M2 chip in a socket on the homemade board. I don't need the full Darlington array, so...

Hi Erco, InglewoodPete, Dartmoor, and AllyCat, O.K., here is a video followed by my code: setfreq m8 main: serin C.0, T9600_8,b0,b1 if b1 = 48 then goto zero if b1 = 49 then goto one if b1 = 50 then goto two if b1 = 51 then goto three if b1 = 52 then goto four if b1 = 53 then...