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  1. J

    Can someone help me with the maths, Please!

    Hi, thank you looking. Im struggling with what should be simple but I cant get my head around it and I am just going around in circles. Its even harder as we cant deal in fractions! I have an ADC input that ranges from 340 - 1000 Id like to take the input and use it to set the speed of a...
  2. J

    ADC INPUT - DAC OUTPUT how can I smooth out the 32 steps.

    Hi All I have set up a 14m2 to drive a brushless motor controller. The 14m2 is connected to a foot pedal (variable resistor (10K)). I have set the 14m2 to read the ADC in via a voltage divider. The voltage divider is 10K resistor and then the 10K foot pedal. When connected to the pedal the...
  3. J

    BATTERY CAPACITOR?`

    Hi All Not directly related to a Picaxe but I am hoping someone can help. I have a battery (29.2v DC) and its made up of Lithium cells. Inside the battery there is a capacitor across the positive and negative wires which then lead directly out of the battery. The capacitor is a 35V 220uf...
  4. J

    read and write problems.

    Hi I am trying to store a binary value o or 1 into a permanent location which remains when the chip is switched off. However no matter what I do the code always defaults to displaying a value which represents a zero value being read from the eprom. So if I try to write 1 to location 1 eg write...
  5. J

    08M2 AND NUNCHUK, is it possible to read the data and utilize?

    Hi All I was just wondering if it was possible to use an 08m2 to ready the data from a Wii nunchuk. I'm especially interested in the data from a the joystick on the nunchuk. I`ve read lots about Arduino doing it so I guess it can be done but has anyone tried it? Any pointers or tips will be...
  6. J

    Coulomb counters - battery level gauge with a picaxe 08m2

    Hi All Has anyone had any experience of using a Picaxe to create a Coulomb counter. I have created a circuit to measure the Voltage of a Li-ion battery with a range 24-29V, however its not very accurate. I read a thread once and I think is was here about someone who had created a circuit to...
  7. J

    vdd to picaxe in simulation appears to default to being powered at 5V?

    HI The Vdd appears to default to 5V when I run my simulation, However I require a 14m2 to only switch on when a switch is pressed as the 14m2 is part of a sub circuit. Please can you tell me how to switch off this defaulting to on. So that the Vdd does not automatically switch on to 5V for the...
  8. J

    Can a picaxe pin be set to a state, rebooted and remain in the state it was set to

    Thanks and thanks again for looking: I have a circuit that when powered using a momentary switch, causes a couple of transistors, N-mosfet and 14m2 picaxe to stay on until a switch is pressed again to shut down the circuit. (If your interested here is the circuit hyperlinked to this text and...
  9. J

    ON/OFF RELAY CIRCUIT WITH 30v SUPPLYand 5V supply and two picaxe.

    Hi All Can someone help me out or point me to some ideas please. I currently have a 30V battery operated device. The circuit is split into 2 halves, 1 side operates at 22-30V from a battery and the other side of the circuit operates at 5V which takes the power from the 30V supply via a 5...
  10. J

    Running tracks under SMD components (resistors and caps), is it good or bad?

    Hi (thought Id start a new thread although kind of related to my last thread on space saving and programming SMD pics). Im creating a PCB which I want to be as small as possible. I only have access to software which allows 2 layers only (freeware Diptrace). So I need to make use of the limited...
  11. J

    Help please programming surface mounted picaxe chips

    Hi Thanks for looking. I am wondering how to go about programming surface mounted chps. I am making a PCB and Id like it to be as small as possible. I may make many of these PCBs and will be using the surface mounted 14M2 and surface mounted 18M2. Im not sure how to go about programming these...
  12. J

    Bluetooth remote control project

    Hi All I am trying to source a bluetooth remote control for integration into an ongoing project. Currently I use a 14m2 to control a brushless motor controller board. The 14m2 receives input from 3 wired switches which are stop/stop, speed up and slow down. Id like to make the unit remote...
  13. J

    How to use the Picaxe Serial driver chip 18M2 on a custom PCB

    Hi All I would like to use (if possible) the 18M2 chip on my own custom PCB to drive an OLED such as the one used in the AXE133Y module. Is there a schematic already available for this which will show me the required connections. I have looked but no luck so far? I don't want to use the AXE132...
  14. J

    PIcaxe and micropuck

    Hi All Thanks for looking. I have what is probably a simple problem to solve if you know what your doing, which I do not!, so I need help please. I don't want to try and solve it with trial and error as I usually would due to the costs of the micro pucks I use which are blown easily. The...
  15. J

    Help please, using 14m2 and LCD from sparkbright.

    Hi Please can someone help with this. I have a 14m2, I was using this chip with an LCD screen called texstar. I have been using this combination for a couple of years without problems, However the texstar LCD from coolcomponents is no longer available. I need a similar low porfile LCD for our...
  16. J

    Picaxe reboots due to momentary power loss

    Hi all I have a small circuit powered by a 4.2v battery. The circuit has an 08m2 at its heart. The circuit is very simple and essentially monitors a membrane switch and when depressed it then activates an n channel fet that sinks a puck to power a cree led. It all works perfectly except that...
  17. J

    Advice please, got a HC-06 and HC-06, 1 slave & other is master but errors in comms!

    Advice please, got a HC-06 and HC-06, 1 slave & other is master but errors in comms! Hi I have a pair of blue tooth modules, HC-06. I purchased them from Ebay. I have managed to get them to link and I have been able to share data serially between the two devices. However in a simple...
  18. J

    Advice to identify a component and possible work around for use with PICAXE.

    Hi I have recently began working on a project to convert a generic foot pedal to be wireless and connect to a wireless receiver which is connected to a PICAXE which will control a brushless motors controller. I have decided to use the ERF modules as the wireless link and I have written some...
  19. J

    How to reverse BINTOASCII

    Please can someone tell me if there is a simple way to reverse BINTOASCII, here is the code b0=123 bintoascii b0, b4,b5,b6 my solution would be: b4=b4*100 b5=b5*10 b0=b4+b5+b6 Is this the way or is there a correct way? Thanks
  20. J

    Please advise on best way to create a wireless foot pedal for motor speed control.

    Hi I am currently driving a motor controller with a Picaxe. (14m2). The speed of the motor is controlled by output from the PICAXE 0 - 4.8V with 10 intervals, 1 -10 being increments of speed. The speed is adjusted by pressing a speed up or down button. I would like to create foot pedal for...
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