Westford MicroSystems

Westford, Vermont, USA

Projects using Microchip PICmicro® MCUs
written in and featuring CCS C code

Last modified 4/02/2014



"But when the kindness and love of God our Savior appeared, he saved us, not because of righteous things we had done, but because of his mercy. He saved us through the washing of rebirth and renewal by the Holy Spirit, whom he poured out on us generously through Jesus Christ our Savior."     Titus 3:4-6

Soli Deo Gloria!                   About me





.... PIC® Software ....
CCS PIC C Compilers are used to compile my source code. Liberal use is made of the many built-in functions provided by these compilers. One statement in C can generate pages of PIC® RISC instructions... instructions you don't have to write by hand! CCS still only charges $125 for their 12-bit and 14-bit command line compilers for Windows and Linux, and offers Windows IDE software as well. These are well worth it in my opinion. You may order the compilers directly from their web site. (CCS also offers engineering and consulting services, their own line of cellular protocol analyzers, and more.) The CCS User Forum is an excellent source of advice for using the C language and compiler with PIC® MCUs. It also has a growing code library.


.... PIC® Devices
....

Microchip makes the PICmicro® microcontrollers. Databooks, application, notes, and much more are on their web site. Everything is oriented around the PIC's RISC assembly language, of course. Visit microchipDIRECT to buy PICmicro® devices directly from Microchip Corporation. This is intended both for personal and business orders.


.... PIC® Device Programmer
....

microEngineering Labs makes the U2 Programmer that I used to program PICs. It connects to a USB port and gets it's power from the USB port. microEngineering Labs also specializes in development tools that make working with PICmicro® MCUs quicker and easier. For those who prefer to program in BASIC instead of C, they offer BASIC compiler software, as well as a wide range of other products such as serial-port and parallel-port device programmers, experimenter and prototyping boards, books, and more. These folks are quite responsive and helpful.


.... Electronic Hardware
....

Digikey has everything, plus everything else! Ordering via web is easy. (I remember when their first catalogs were 1/8" thick... the most recent catalog now measures 3" thick!)

Mouser is also a very thick catalog! Ordering via web is easy.

Farnell is the leading multi-channel, high service distributor of electronic components supporting millions of engineers and purchasing professionals throughout Europe and Asia, and is a global distributor of Microchip products including microcontrollers, semiconductors, and more. Farnell values alignment with like mind people who think Farnell's services could be of benefit.

Crystalfontz supplies a wide variety of LCD displays for very reasonable prices. Although my projects use only the character-based LCD displays, they have much more.

Saelig searches the world to bring you unique, easy-to-use control and instrumentation products. "SAELIG" is an Olde English word meaning "happy, prosperous, and blessed"...which is what Saelig wishes for its customers! Very reasonably priced oscilloscopes as well as a very broad line of everything else. Browse the catalog.

Spark Fun Electronics A great source for innovative prototyping supplies including the CP2102 USB-SERIAL and other Breakout Boards for attractive prices. Their web site includes User Forums and (future) tutorials. I browse this site to find out what's latest.

Saleae makes two logic analyzers: Logic is an 8-bit analyzer for $149 and Logic16 is a newer 16-bit analyzer for $299. The best part about these analyzers (I have both) is the obvious care put into the design of both software and hardware, and very responsive and helpful emails. Software is getting updates all along. Well worth the price and I use this analyzer often.


.... Printed Circuit Boards
....

ExpressPCB provides a printed circuit board prototyping and production service. Their free ExpressSCH schematic editor and ExpressPCB board layout CAD software run under Windows and are easy to learn, complete with integrated Digikey part numbers. After the finished board file is uploaded through the software, their PC board service manufactures high quality boards with plated-through holes, from double-sided to four layers, up to 12"x14" in size. They are both fast and economical with most orders shipped the next business day, and for as little as $51 U.S. I used this process to make PC boards for my Tank Level Detector and NiCd/NiMH Battery Characterizer.



.... Mechanical Hardware
....

eMachineShop is a full-service machine shop as near as the internet. It's great for making custom parts for research projects. Download their free software to draw your part. Essentially, you send out a file; you get back physical parts that work to your specs. The software includes commands to evaluate your design, obtain automated price quotes, and order via internet. eMachineShop streamlines the entire process from what you see on your screen to delivery at your door.

Online Metals is an online supplier of small quantities of metal such as steel, stainless, copper, bronze, brass, titanim (and even plastic) in tube, flat, angle, square, hex, round, flat, sheet, and other shapes. No minimum order!

McMaster-Carr has what I believe may be the most helpful and intuitive web presence online today. Their site makes it easy to quickly locate a part, locate helpful alternatives to the part, and narrow down exactly what you need. After you set up your profile, a few clicks enters an order and parts are on their way. Pretty impressive! So what does McMaster-Carr sell? Screws, bolts, and all fasterners, pipe, tubing hose, fittings, bearings, pneumatics, sealing components, and so on. You just need to visit their site.



.... My favorite surplus stores
....

HSC Supply (Halted Supply) in the San Jose, CA area is located at 3500 Ryder Street, Santa Clara, California 95051, 408-732-1573. You can view their PowerPoint presention to get an idea of their store, but the one thing inaccurate about the presentation is that they obviously cleaned the place up before taking the photos! (It's really much more cluttered, therefore better, than the photos!)

Excess Solutions in the San Jose, CA area is located at 430 E Brokaw Road, San Jose, CA 95112, 408-573-7045, 15 minutes from Halted Supply (above.) Mostly electronic components. (Check out the Fry's one block away from Excess Soutions.)

Skycraft Surplus in the Orlando area. In Orlando, only minutes from the Orlando Airport! I couldn't believe what they had. It was crowded (with people and stuff.)

P&T Surplus, 198 Abeel Street, Kingston, N.Y. 12401, 845-338-6191. Surplus metals, electronics, hardware, and other materials bought and sold. They are beginning to have a presence on eBay. Abeel Street is at the north end of the old bridge over the Esopus Creek. Turn west (inland) and go three blocks, on the left. Mostly industrial and mechanical surplus.

Electronic surplus stores in Vermont (Are you kidding?)


...... Ideas
......

APPLICATION NOTES...
        Practical application of the Hamming code for error detection and correction
        Techniques for fault-tolerant coding in embedded systems
        Spreadsheet for calculating timer and interrupt values, timing error percentage
        About the LCD DISPLAYS used in most of these projects

QUESTIONS... If you can't find answers on this site, check:

STUDENTS...if you are searching for ideas for a term project may I humbly suggest that this web site is for creative ideas, not quick and easy term projects? Creativity is why you are in school! Nonetheless, I do have some ideas.

HEX CODE...if you are looking for hex code or additional circuits, code, schematics, etc, everything I have is listed above. I don't have hex code listings.



...... Projects
......




NOTE: All material Westford MicroSystems® 2000-2013 and may not be republished without permission. Links to these pages are always appreciated.

NOTE: Although these projects work for me, they are offered as-is, at-your-own-risk, and are for non-commercial use only. (Commercial users please contact me if interested.)

NOTE: Some of these projects involve voltages that can kill. It is assumed that if you are knowlegable enough to experiement, you are also aware of the risks.

NOTE: EMI/RFI that is sprayed by these circuits is dependent on both electrical design and mechanical construction. Use careful layout technique where EMI/RFI is critical to the application, such as in radio-controlled airplane and marine navagation applications!




PROJECT Processor Files
  INCLUDE FILE "jonsinc.h" used by most of these projects. All Description
Download
      WIRELESS REMOTE CONTROL for Raymarine ST4000 Autopilot uses Raytheon's Seatalk® communications protocol. 16F628 Description

Transmitter
C code
Schematic

Receiver
C code
Schematic

  COMBINATION LOCK FOR SAFE puts security into an old fire safe. 16F628 Description
C code
Schematic
  TIMED DISCHARGE ADAPTER for a Vericom control panel used with an Advantex wastewater treatment system. 16F628 Description
C code
Schematic
  COFFEE POWER MANAGER or, how to get 27-amps out of a 20-amp outlet for three large coffee pots at church. 16F628 Description
C code
Schematic
  STEAM GENERATOR for residential steam shower. 16F873 Description
C code
Schematic (CPU)
Schematic (Unit)
  NETWORK EQUIPMENT RESETTER automatically drops power to routers and satellite internet receiver once every 24 hours. 16F628 Description
C code
Schematic
  DATA LOGGER measures and stores voltage at specified intervals and dumps to RS232. 8192 samples. 16F876 Description
C code
Schematic
  BATTERY CHARACTERIZER loads charged NiCad and NiMH battery packs and measures milliamp hour capacity. 18F252 Description
C code
Schematic
  Underground locator generator for Radiodetection® RD400 LLTS Precision Line Trace unit (underground cable locator) 16F628 Description
C code
Schematic
  GPS REPEATER/SYSTEMS MONITOR displays NMEA-0183 data from a GPS, battery voltages, etc. 16F876 Description
C code
Schematic
  TRACK CONTROLLER FOR AWANA® GRAND PRIX (also Pinewood Derby) measures and displays finish times, sends results to computer. Works with "GrandPrix Race Manager" from GrandPrix Software Central. 16F628 Description

C code

Schematic
  PIC® PROGRAMMER
I use the microEngineering Labs U2 Programmer in my own lab. This programmer connects to a USB port and gets it power from the USB port. It works well and I highly recommend it!
All! Description
  GPS-based COMPASS DISPLAY uses RS232 data stream from GPS receiver. 16F628 Description

C code

Schematic
  DARKROOM EXPOSURE SYSTEM controls safelamp and enlarger lamp, measures exposure. 16F873
16F876
Description

C code

Schematic
       REMOTE CONTROL for Raymarine ST4000 Autopilot uses Raytheon's Seatalk® communications protocol. 16F628 Description

Discrete switch version
C code
SchematicF628

Keypad version (untested!)
C code
SchematicF628
  COMBINATION LOCK for home door, 4x4 matrix keyboard, master combination plus four programmable combinations, programmable lamp and solenoid times 16F84 Description
C code
Schematic
      LIQUID LEVEL TRANSMITTER/RECEIVER SYSTEM designed for marine applications using Raytheon's Seatalk® bus. Includes tachometer transmitter example although the receiver is only for liquid level. 16F628 Description

Level Transmitter
C code
Schematic

Tach Transmitter
C code
Schematic

Level Receiver
C code
Schematic
  TEMPERATURE SENSOR using the DS1820 chip. 16F876 Description
C code
  Experimental PELLET STOVE CONTROLLER. 16F628 Description
C code
Schematic
  DIESEL TACHOMETER uses "tach" signal from alternator. 16F628 Description
C code
Schematic
  ADC EXAMPLE for 16F87x PICs and similar. 16F873
16F876
Description
C code
  ADDRESSABLE ADC and controller receives serial command then 1) returns ADC measurement, and 2) writes output port. Three-byte serial command, three ADC inputs, 8 digital outputs, 5-bit address, 9600-baud. 16F873 Description
C code
Schematic
  MORSE CODE DISPLAY hears Morse code from shortwave receiver, displays text on LCD display. 16F84 Description
C code
Schematic
  Rx/Tx pulse stretcher for LED that monitor serial Rx/Tx lines 12C509 Description
C code
  COMBINATION LOCK single button, for car liftgate 12C509 Description
C code
Schematic
  DELAYED-SHUTTER CONTROL for the (now obsolete) Kodak DC-20 digital camera 12C509 Description
C code
Schematic
  CAMERA INTERFACE for the (now obsolete) Kodak DC-20 camera in radio-control aircraft 12C509
16F84
Description

509 version
C code
Schematic

F84 version
C code
Schematic
  AUDIBLE EMERGENCY LOCATOR ALARM ("lost model alarm") for lost (and possibly "re-kitted") radio-control planes 12C509 Description
C code
Schematic
  Radio-control SERVO EXAMPLES 16F84 Description

Straight function
C code

With linearizing function
C code






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