PICAXE battery voltage monitor

Does anyone have an idea of how one could get a picaxe to monitor its own battery source and light an LED when the voltage drops below a certain value. I am thinking that there might be a way to do it using a ADC input. Perhaps a zener diode could be used and the voltage above its threshold could be measured.

Posted by biochemtronics 10 years ago


Running several servos off an Picaxe 18m2.

Hi there.  I recently got a Picaxe 18m2 project board and I want to run up to eight servos off it, if thats even possible. Would I need a separate servo driver/controller for that number of servos or perhaps a different microcontroller? Any examples of code for operating more than one servo at a time would be appreciated also.  By the way, apart from reading 'Robot builders bonanza', my technical experience consists of operating 'Bigtrak' when I was about 12 and changing the odd plug. Cheers.

Posted by jonnymelon 5 years ago


PICAXE-28X1 Starter Pack (USB) vs Arduino diecimila

PICAXE-28X1 Starter Pack (USB) vs Arduino diecimila which of these two boards is better for a beginner?

Posted by silva_p 10 years ago


PIC & PICAXE Hardware

Hi, I have found these folks that are selling PIC & PICAXE hardware, http://stores.ebay.co.uk/The-Electronics-Hobby-Shop/Genie-PIC-PICAXE-Kits-and-PCBs-/_i.html?_fsub=4724566013&_lns=1&_sid=682369153&_trksid=p4634.c0.m322 Laters!

Posted by davidbraith 4 years ago


PICAXE "snap connector" kitset

Check the kids level "snap connector" PICAXE microcontroller DIY kit ! => https://www.instructables.com/id/quotSnap_connectorquot_PICAXE_microcontroller/

Posted by manuka 9 years ago


Gadget Gangster Father's Day Contest Winners

We've announced the winners of the Father's Day Contest - the challenge was to build an electronics project to help Dad around the house. The 1st place project is awesome!See the winning projectsThought I'd pass it along - a lot of the projects have the sourcecode available, and a few have instructables up, too.

Posted by Gadget Gangster 9 years ago


PIC/PICAXE/Genie controlled Knex/Lego motor controller

Hi, I have a designed a motor controller circuit that is controlled by a PIC/PICAXE/Genie MCU.  It is programmable and simple to ise therefore it is very flexible. Please look at the following link, http://rkeducation.co.uk/RKPMotorControl.php If you would like to test one for me and you would be happy supplying me with some pictures please contact me. Thanks

Posted by davidbraith 5 years ago


picaxe sensitivitį

Hi there instructables, recently I have bought a picaxe starter kit, soldered it and stuff, played with some code and leds, but now I want to make a time control, so I bought a cheepo alarm clock, desolder the piezo beeper and extended the wires so I can conect them to my picaxe, turns out its too sensitive, the pin I've set to input piks up heat fom my fingers about a centimeter away, breath too, I think it picks up grounding as a signal too, does it ment to be that sensitive or have I messed something up with soldering or the code?  heres the code I used  main: if pinc.4 = 1 then goto led goto main led: high c.1 pause 500 low c.1 pause 100 goto main

Posted by batonas 3 years ago


Picaxe and Servo problem

Ive been using this picaxe uC for a while and have had no problems, but in my latest project I wanted to pan a servo back and forth. Problem: for the life of me I can only get the servo to move in one direction. It is a GWS pico servo and I have "operated" it on 5v and 6v, so i dont believe it to be a voltage issue. coding issue perhaps? ( I have tried the SERVO command, the SERVO and SERVOPOS command, and even the correct PULSOUT commands to no avail) I have scoured other forums, even rev-ed.com's, but no one seems to have my same problem. As far as I know the SERVO command SHOULD work fine but doesnt. I have tried the commands with and without a 220 ohm resistor on the signal wire, but this seems negligible. When my picaxe 18x is loaded with any servo capable code and the connections are all hooked up, the servo simply moves all the way and stops. the only way i can "reset" my servo to its original position is by quickly removing and tapping the V+ or GND supply wire to the servo. after the servo has moved I can feel the tiny motor jiggle whenever I tap the signal wire as if trying to work. ANY suggestions are welcome!

Posted by Aleator777 9 years ago


PICAXE Electronic interference?

I have solved the problem by making two changes.Firstly, a 22k resistor was put from I/O 2 to ground.Secondly, I had to modify the program to be the following, and accept any value as an input as long as it was not 0. The new program is shown below:main:low 1 &apos;discharge led on Pin 1input 2 &apos;make pin 2 an inputreadadc 2, b1 &apos;read pin 2 using ADCif b1 > 0 then flash goto main &apos;loop back roundflash:&apos;led sequencehigh 1pause 100low 1goto mainI've been having a bit of an odd problem...I'm trying to use a PICAXE 08M with a touch input, so a user touches a wire or bridges 2 wires and the uC responds based on the program, at the moment, turns an LED on.Now, Initially, I've tried a few things, until sort of by accident I noticed that using the program I was, the LED turned on by touching the input pin of the PICAXE, with nothing attached to it except one short piece of wire. I know the human body has certain capacitive qualities, but I wouldn't have thought it would be enough for this. The LED started turning on when I got close to the breadboard it was on, never mind the wire.I tried moving the board, while I had my finger on the wire, and found that when I got a certain distance from my laptop (About 1 ft or so) the LED would go out, and not come on again. Strangely, it does the same when my laptop is turned off!So what I was wondering is, what could my laptop be doing that enables the PICAXE to get an input from seemingly nothing? Could it be some sort of EM field from it? Incidentally, the same thing happens close to my TV.The code i'm using is below.main:low 1 &apos;discharge led on Pin 1input 2 &apos;make pin 2 an inputreadadc 2, b1 &apos;read pin 2 using ADCif b1 < 40 then flash goto main &apos;loop back roundflash:&apos;led sequencehigh 1pause 100low 1goto main

Posted by whatsisface 10 years ago


Serial communication between PC and picaxe 28X2

Hi, I am having problem in communicating with PC with Picaxe 28x2. Please help me in solving this problem as it is a very important project My aim is to send the values of w1 and w2 variables ( values of the ultrasonic range sensors 1 and 2 ) to the PC and display them with the help of VB my picaxe code is ..., #picaxe 28x2 main: pulsout C.1,2 pulsin C.1,1,w1 pause 10 pulsout C.2,2 pulsin C.2,1,w2 pause 10 sertxd(#w1,#w2) pause 100 goto main and my VB code is , Imports System.IO Imports Strings = Microsoft.VisualBasic Public Class Form1 Public Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Integer) Dim WithEvents serialPort As New IO.Ports.SerialPort Dim PicaxeRegisters(0 To 1) As Byte Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Timer1.Enabled = True Timer1.Interval = 5000 End Sub Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick Call SerialTxRx() End Sub Sub SerialTxRx() Dim labelstring As String = "" Label1.Text = "" If serialPort.IsOpen Then serialPort.Close() End If Try With serialPort .PortName = "COM1" .BaudRate = 9600 .Parity = IO.Ports.Parity.None .DataBits = 8 ' 8 bits .StopBits = IO.Ports.StopBits.One .ReadTimeout = 1000 .Open() .Read(PicaxeRegisters, 0, 2) .Close() End With For i = 0 To 1 labelstring = labelstring + " " + Str(PicaxeRegisters(i)) Next Label1.Text = labelstring Catch ex As Exception MsgBox(ex.ToString) Label1.Text = "Timeout" End Try End Sub End Class I have not included the write command, since I have not included qualifiers in the picaxe code. The Picaxe chip is sending the values ( I used the terminal in picaxe programming editor to realise this) but the visual basic is not displaying me the actual values sent by the picaxe chip. It is showing random values instead ... So i think that there is an error in the VB code. PLEASE HELP AS SOON AS POSSIBLE .. Thank You 

Posted by santhoshR 7 years ago


connect picaxe / computer / internet - budget solution ?

Am a newbee to picaxe working with mac soft- and hardware & i spent a a lot of time looking for the following: ------------------------------------ i would like to ... - transfer in- output data from simple components (such as a IR LED used for light/dark detection ) - .... via picaxe - ... to windows and mac computers in order to .... - pass them on to a website or eMail them ------------------------------------ i already had a look at ... - arduino/processing configurations (e.g. some amazing "twitter" variants posted on instructables, hack-a-day, etc. ... ) - additional external server projects (as on this site - e.g. very impressive webcams driven by websites and controlled by 'site users ...) - Nordic RF, Cellular, Zigbee, Bluetooth, XBee WiFi, FM Transmitter and Receiver, General TX/RX sending/receiving configurations (btw. - there is a very interesting comparison of these on sparkfun ---> http://www.sparkfun.com/tutorials/128 ) - very elaborate software solutions (using combinations of php, processing, python and other scripts) all of them being highly impressive and, most important of course: working well ------------------------------------ but - is there any quite easy-to-configure and budget way which does not require ... - additional, external servers - platform specific software (windows/mac/linux only) - the implementation of several software packages and runs with e.g. ... - a 08M2 picaxe (or larger).... - probably cheap component(s) (such as the Nordic RF mentioned on sparkfun) - a minimum of software requirements - a software/software component which is easy to install and configure (Visual Basic Macros doesn't seem to run once i created them via word on my mac) ? any hints are highly appreciated ...  

Posted by marc_is_curious 7 years ago


Idea for microcontroller project - Any takers?

  Here's an idea for a simple microcontroller project which occurred to me.  Not something I'm going to build and not something I have an immediate use for, so I'm throwing it out here to see if anyone wants to take it up.  Using something like an Ardweeny, it could be an entry in the Arduino contest. The idea is to made a motion triggered wildlife video camera, using a PIR sensor, a standard keychain camera, a microcontroller and a LiPo battery.  That, minimal wiring and effort and you'd have a very small device you could leave by food, a crossing point or animal track and it would record video only when an animal passed by.  Leave the camera in place for a couple of days, then take out the SD card and play back the .AVI files on your PC to see what's been happening.  For construction, you'd need to disassemble the camera as per the linked video, and test how the 'record' button operates - It's probably just switched to 0V so could be driven with a logic output.   You'd remove the camera battery and wire in a larger LiPo instead for endurance. This would also power the controller and sensor.  The PIR sensor (with regulator bypassed, as per Sparkfun datasheet) would be an input to the microcontroller, and the programming would consist of monitoring the PIR output for pulses and triggering a 2 second pulse on the camera button to start recording.  After a period of no PIR pulses, the camera 'switch' would be pulsed again to end recording.  Put it all in a waterproof enclosure with access for the 'business end' of the camera element and you have a motion triggered wildlife camera. "Seemples", as the Meerkovian rat-creature says. Wire up a bank of infra-red diodes, increase the battery capacity and remove the IR filter on the camera and this may even work as a night-vision camera. Any takers?

Posted by AndyGadget 6 years ago


Simon Says DIY

Hi, I am building a Simon Sais Game,Searching the internet i found 3 DIY's One is the KIT thing, and that spoils the idea,The other one i found uses a PICAXE-18 microcontroller wich is not available in egypt, last one i found is ok, but i wanted to add some more features to the game, A speed control, a reset botton and a 7 segment counter to count the correct moves.SO please post any ideas, any links and help would be appreciate! these r the links i foundthank uThe PiCaxe Simon Sais GameThis one is the one i want to improve

Posted by super_r_85 10 years ago


Unable to upload certain file types to Instructables

Hello, Just working oncreating  my first instructable using Windows 7 and internet Explorer 9. I can upload pictures ( .jpg) and also .pdf documents. I don't seem to be able to upload anything else. For example I can't upload a Windows document .doc or docx file, a PICAXE .bas file or a DipTrace .dch file. Why is this? Thank you sncarter

Posted by sncarter 5 years ago


servos run on 6.5V, but how many amps?

I have five servos running off a picaxe sd21 servo controller and it will operate using four AA batteries, but I want it to run off a wall adaptor. Now theres plenty of adjustable adaptors on the market giving from 3V to 12V and I've seen one that might work for me that can be set to 6.5/ 7.5V, but does anyone know the suitable current range for my device.

Posted by jonnymelon 4 years ago


WALL TRANSFORMER V BATTERY PACK FOR SERVOS

Hi there. While testing some code on three servos using my picaxe 18m2 project board I initially had them powered of the 4x1.5v battery pack. This was working smooth enough, but because I eventually plan to power seven servos (for a robot arm project) I thought I'd try using a 7.5v wall transformer but they didn't seem to like this as the smoothness of movement was gone as they slowed and sped up and were jittery.  Is the 7.5 a bit much, a few resistors maybe? Or prehaps capacitors would smooth things out. I'm not overly electronically gifted, robot builders guide is all I've got to go on. cheers. john. 

Posted by jonnymelon 5 years ago


I need a mini-arduino! Help with finding one!

Hey guys! I had a question! I got several ATtiny85s and they were great! I was able to use my Arduino Sketches and my use Arduino to upload the code to them. But now I have a new project and I need more then 2 outputs! I need another microcontroller just like the Attiny85 but with say 4-10 outputs. Any sugggestions? Oh, I have to be able to use my Arduino sketches with it, so I can't use things like the picaxe thingy. I also don't want to buy a miniduino or microduino. Thanks!

Posted by HavocRC 5 years ago


Getting Started with PIC

Hello again, I'm looking for suggestion or first hand accounts on getting started with programmable IC's. I'd say I have enough basic electronics skill to get by, but I'm completely new to programmable chips. So I'm asking where is the best place to start? I'm mostly just looking for hobby stuff at this point. The PICAXE stuff seems simple enough for a starting point, anyone have first hand experience there? I should note I don't have any access to programming though parallel ports, and I'm running Windows Vista, so any set up would need to support usb and my os. Additionally any recommendations on some reading would be nice too. Thanks again Nic

Posted by Mrlzeppelin 8 years ago


constant 4.5 V supply using batteries?

how may i get a constant power supply of 4.5 Volt using batteries? -------------------------------------------------------------- WHAT I FOUND SO FAR googling and visiting several discussion groups i found related advice ... - e.g. using 1 more than the required batteries in combination with e.g. a voltage regulator, diode, resistor, DAC - if i use 4 instead of 3 aa batteries and the voltage drops after a while - would a voltage regulator, resistor, DAC still provide 4.5V from the remaining voltage? may i ask you what you would recommend? -------------------------------------------------------------- WHAT I NEED IT FOR i am using rf sender/receiver modules with my picaxe 08m microcontrollers & found, that they (and the connected antennas) work best at a constant voltage of 4.5 V

Posted by marc_is_curious 6 years ago