Hardware Arduino Strobit Wireless Widget Wireless Widget Widget Mesh Rallylog Makecontroller CNC Picaxe CAD Eagle3D Parts
Well there aren't really any downloads for this projects just yet. However for the prototype based on the PIC16F88: Drawings are available here BoostC source code and Eagle files are here . If you have any questions please contact me via the contact form.
Prototype Specs: PIC16F88 running on internal 8MHz Clock - low cost and very popular, free development tools available, i.e. C compiler. Works in unlicensed 915MHz ISM Band(Australia/US), can work at 433Mhz by changing RF module(US/EU/Australia). RF uses FSK Modulation - Less prone to interference sources. All aspects of the RF module is configurable via the … Continue reading Prototype
During the development of the StrobIt Open Trigger Project I've been using the HopeRF RFM12B Tranceiver as the RF module. The learning curve was fairly steep so I've decided to create a series of How-To articles so that others can easily get the module up and running fairly quickly for their project of choice. So … Continue reading RFM12 Tutorial – Part1
I'm pleased to announce the very ALPHA release of the RFM12 library for the wireless HopeRF RFM12 FSK tranceiver module that I'm using for the strobist open trigger project. It was developed under BOOSTC for the PIC embedded controller, but should be easily ported to any compiler. Most of it is untested, hence the alpha release, but it's a … Continue reading RFM12 FSK Library – Alpha Release
I finally had some time this weekend so I started the hardware verification, mainly getting the PIC and the RFM talking together via SPI, of which I have had no previous experience. The PIC is receiving it's clock source from the RFM12 via the CLK pin so I dont need any external Xtals. The RFM12 default clock rate … Continue reading PIC, SPI and the RFM12
Trying to fit the functionality into the existing ebay trigger receiver housing seems to be a royal pain in the butt, especially trying to work in with the batteries, so after a few days of PCB redesigns and juggling compments around I have put that particular design on hold and moved forward with my original PIC16F873A … Continue reading More challenges but getting there
A couple of design changes, main one being I could not physically fit a single design into the existing housings that would encompass the Tx and RX, the RX housing is the problem as it's a fairly small board so that means I've had to change the processor so that I can physically fit everything as … Continue reading EBAY Trigger Receiver PCB
Well it's certianly been a long since my last post, sorry! Between getting married and christmas (all on the same day lol), and the kids going back to school, my geeking (as my wife likes to call it) has been taking a back seat lately i.e. not a whole lot happening. However I have managed to … Continue reading Life….
My PICAXE Projects BuzzBot Blog - A R/C Toy being converted to a robot using the PICAXE LED Switch - Interesting Sensor Concept using an LED as both a Light Emmiting Device and as a Light Sensor
I came across an interesting article yesterday on Hack-A-Day about using a LED as a Photo Sensor and cheap communictaion device. This is achieved by using some physical properties of the LED for both Transmit and Receive. The article also links to a cool video clip demonstrating this. Original Article can be found here http://www.hackaday.com/entry/1234000873073550/ Anyway this sparked my interest … Continue reading PICAXE – LED Sensor
I started testing last night after finishing initial motor and wheel sensor hookups to my development board. Couple of minor issues so far. Issues I'm using a pic based board from Modtronics. These are great and reasonably priced, along with the prototyping daughterboard. However I have since found that the onboard RS232 is not on … Continue reading BuzzBot – Initial Testing
Last night I did some brain storming asto what the I/O requirements will be. During this requirements phase I came across a bit of a delima with the PWM requirements for the motor controller. The motor controller requires two outputs per motor, so this rules out using the onboard PWMout command of the PICAXE, as … Continue reading Buzzbot – Circuit Design
Ok encoders are in, although not wired up. So I quickly re-assembled the wheels and motor controller board for a quick test. Glad to say that everything tested aok. Put my logic pulser on the inputs and sure enough forward and reverse is easily attained on both motors, although due to the low frequency pulses of … Continue reading Buzzbot – Motor Controller Tests
Now that the Motor Drive Controller has been worked out, (but yet untested) I needed to make up some encoders for the Left and right Wheels. After a bit of research I found an excellent program for creating encoders and quickly made two and have just glued them to the inside of the wheels for … Continue reading Buzzbot – Wheel Encoders