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  1. J

    Web Graph Display

    Hello, I have many picaxe chips collecting all sort of data and displaying the data on a web server run on a Pi or a PC. I would like to also display graphs, now, I use thingspeak for graphs but would like to go to a local server. There are dizzying amount of ways to serve graphical pages, I...
  2. J

    Hayabusa

    For Australian forum members, Hayabusa2 will be dropping off it's capsule December 6th here is a link to help spot the Fireball. I wonder if there is a way to detect it using a picaxe.
  3. J

    Multiple masters I2C

    Hello, would it be possible to have a picaxe and a raspberry pi sharing an EEPROM. My thinking is to have a picaxe write data to an external EEPROM and then have a raspberry pi retrieve that data at will. I realize they can't both be active at the same time so i would have to have handshaking...
  4. J

    DAC Transistor

    I'd like to use the digital to analog function of an 18M2 chip, is it safe to use an NPN transistor to buffer the output, the suggestion is for an op-amp but I was hoping to use less space. Also, is the voltage coming out from the DAC steady or will it vary depending on how busy the chip is...
  5. J

    Project Panel Labels

    I'm sure I have seen this question posted before but am having difficulties finding it on the forum. Every so often I like to finish a project by installing it in an enclosure, lately i have been making front panels from thick aluminium, comes out very nice, I would like to label the switches...
  6. J

    IRIN and a switch.

    I'm making an input selector for an amplifier. I want to control it with a picaxe, it will have an Infrared remote control and also a single button that will go through 4 choices. The IR command is blocking, what would be the best way to sense for switch closure, should I go with an interrupt or...
  7. J

    Turntable Speed

    Hello, I bought one of these for my turntable, and neglected to notice that it's a 50 Hz model and I need a 60 Hz. I don't mind that it's 50 Hz I rather prefer a portable light source. I need to order some high intensity LEDs, would a white LED be better or should I go with red or some other...
  8. J

    Picaxe/Pi DataLogger

    Hello, I'm at a planning stage for a remote data logger and have a question. The project will be a Raspberry Pi attached to the programming inputs of a Picaxe, 20M2 or 20X2. I will be using Pi UART ttyS0 connected through an inverter to Picaxe programming pins. That's all tested and working. On...
  9. J

    DigiSpark to Picaxe

    I recently bought one of these, http://www.ebay.com/itm/Digispark-Kickstarter-Attiny85-Micro-USB-Development-Board-for-Arduino-ATtiny-MC-/192024551548?epid=867830558&hash=item2cb58e207c:g:OrAAAOSwal5YJZBz My hope was to use it as a helper chip to picaxe. I have it setup and flashing, next step...
  10. J

    Picaxe Pi power control

    Hello, I'd like to setup a remote raspberry pi picaxe combination, all battery powered. The raspberry pi zero wireless would be used to program the picaxe and to collect data from picaxe. I'd like to have everything run on a single LiPo cell with a 3.3V LDO regulator. To conserve power pi would...
  11. J

    Photo Light Meter

    Hello. I'm hoping for some suggestions for a project I've been wanting to make. I still like shooting film and have a number of very old film cameras, Zeiss, Agfa, Argus and so on. Most do not have a light meter and tho I'm good at guessing sometimes a light meter would help. I do have nice...
  12. J

    Geophone to Picaxe

    I would like to interface a geophone to the picaxe. I have tried using a single stage transistor amplifier feeding the ADC input of picaxe and it worked well enough, would sense a tap on the table reliably. I want to try using an OPAmp circuit and am asking for suggestions on how best to...
  13. J

    HM-TRP

    Happy New Year to all. I have been trying to get this module to work with a picaxe, http://www.ebay.com/itm/HM-TRP-Wireless-Transceiver-433Mhz-HopeRF-w-simple-UART-Program-Interface-/171379880201 here is the datasheet for it, http://hoperfusa.com/docs/HM-TRP.pdf and here is a code I tried...
  14. J

    Prototype Board

    I have been using these boards for as long as I remember, http://comingsoon.radioshack.com/multipurpose-pc-board-with-417-holes/2760150.html#.Vba4C_lViko It's getting very difficult to find at the local stores, I called many stores today and found but 1 board. I would think that a similar or...
  15. J

    Retransmit Serial to Bluetooth

    I have a setup where I'm sending 2 bytes of data over 433 MHz modules, in this case soil moisture measurements. I also send battery voltage and internal chip temperature. I have an 08M2 send the received data to the PC using SERTXD and it works perfect but I wanted to add another wrinkle and...
  16. J

    LED with built in resistor

    I hate to ask such a basic question but have had little luck finding LEDs with built in resistors. I used to buy them from phanderson's site, they came in a package of ten. Red LEDs with built in 330 ohm resistor. I'm thinking someone must sell them on ebay but so far i can't find them. Thanks...
  17. J

    Web Server

    I've been looking about for a web server a while now, the ideal solution being the NET 001 Picaxe Net Server but it is very pricey and not all that available in the US. While browsing around I stumbled on a basic stamp Spinneret web server. Looks interesting, has anyone tried interfacing the...
  18. J

    Measure Camera Shutter Speed

    I still use film cameras, some of them very old ones, i would like to use the PICAXE to verify the shutter speed. Years ago i made a circuit that measured the shutter speed by using a phototransistor that charged a capacitor and then measured the voltage the capacitor reached, it was done with...
  19. J

    Nunchuck WII Interface I2C

    I've been trying to interface a Nintendo nunchuck to a PICAXE 18X using I2C with no success. It has been done with other platforms and I would think the Picaxe should be able to as well. Perhaps I should be using a 28X. I've been using this tutorial as a guide...
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