Maxi-Flash
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03/30/2012
Earthmen Productions
Earthmen Productions
Dec-00-Mar-12

 

 

 

 

 

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Updated: March 30, 2012

PIC Projects: "MAXI-FLASH"
A High-Current, R/C-controlled Electronic Switch

History

Parts

Building

Programming

Testing & Operation

Notes

Note: All pictures that follow are "clickable"
The "Maxi-Flash" is a R/C-controlled, high-current LED Sequencer Controller that can be built using almost any type of MOSFET, controlling loads over 30+ amps!

Assembly Instructions               User's Manual-Download or View            BUY ONE NOW!

A lil' history ...  UNDER CONSTRUCTION!
This project, called "Maxi-Flash", is a miniature programmable LED Sequencer/Flasher that is based around the Mini-Flash LED Navigation Lighting controller which is a PC-programmable, 4 LED channels sequencer that also incorporates Radio Control (R/C) functions.  The Maxi-Flash uses high-current MOSFETs (30+ amps each) for driving high-current loads, unlike the Mini-Flash that uses smaller NPN transistors (600mA each).  These functions allow the Maxi-Flash to be used for high-current applications such as high-power scale navigation lighting and even night-time flying!  The user at any time can reprogram the LED sequencer using a PC-based (i.e. Windows) program that includes a unique and intuitive Graphical User Interface.  In fact, the servo lead which is normally plugged into a spare R/C receiver channel for control, is also used to reprogram the Maxi-Flash flasher/sequencer via a computer's serial port (9-pin) connection and programming cable.  (If you do not have a serial port on your computer, most USB-to-Serial Converters work too... Click here to see a verified list).  The free downloadable programming software also allows the user to "test" the LED sequence they develop by use of software-based graphical representations of the 4 LED channels.  The sequence speed can also be programmed by the user.  Each sequence contains 50 events and each of the 4 LED channels can be either ON or OFF for every events.  If the user wants to develop a sequence with fewer events, this can also easily be programmed. 

 
As if these are not enough features, the "Maxi-Flash" also includes a control for each of the 4 channels that allows the user to use an R/C servo output (from a R/C receiver) as a "switch" control for the 4 LED channels.  This feature allows the user to control (active or inactive) each of the 4 channels in regards to the position of the servo control input.  If the user uses a stick or slider for control input, the use will be able to program 1 of 4 "Zones"; 0-1/4 stick, 1/4-1/2 stick, 1/2-3/4 stick and 3/4-Full stick).  If the user uses a switch as the servo input, the user will be able to define one of 2 "Zone" settings for each LED channel (either 0-1/4 and 3/4-Full). 

Design Criteria Summary:

1) Design a simply and cheap programmable LED flasher around 8-pin PIC
2) Design so LED sequencing speed and sequence pattern is programmable
3) Lightweight and simple to build (DIY)
4) Power off of existing R/C servo connector
5) Use servo signal to vary how each LED channel responds (turn programmed chanel/pattern on or off)
6) Design programming software so it's intuitive and provide varying functions
7) Interface to computer using RS-232 (9-pin) connector most computers have... Can be used with most USB-to-Serial Converters (Click here to see a list that works)
8) Programmable almost indefinitely... change your sequence pattern/speed many, many times
9) Powers High-Current Loads! (Depends on MOSFETs used... can be up to 30+ amps!)


Parts & Tools List ...

1) One (1) PIC 12F683 Chip (preprogrammed with Maxi-Flash code)
2) Three (3) 10K ohm resistors (2 for Maxi-flash, one for programming cable)
3) One (1) 2.2K resistor
4) One (1) Servo Lead/Pigtail wire for Maxi-Flash
5) One (1) 16 pin (8x2) Dual-Row header (male)
6) Four (4) MOSFET Transistors (almost any n-channel MOSFET will work)
7) One (1) RS-232 9-pin female connector (to connect to PC com port)
8) One (1) RS-232 9-pin Hood/Cover
9) One (1) Programming Cable Wire (i.e. Servo Extension)
10) One (1) Programming cable wire (2 conductor wire, 4' or so)
11) 8 dual-row headers (mating connectors for Maxi-Flash Header)
12) 3 pieces of heat shrink tubing for assembly (for Maxi-Flash & programming cable)

(Note: Customer is responsible for supplying LEDs and connecting wires... LEDs are sold separately in the DIYRC webstore... CLICK HERE!)

      

WANT TO BUY A PRE-ASSEMBLED & TESTED MAXI-FLASH?

Maxi-Flash
(Assembled & Tested)

CLICK HERE TO BUY ONE NOW !
LIMITED SUPPLY !
COMING SOON


 

Maxi-Flash  - Pre-Programmed PIC Only
(This is for one pre-programmed PIC only... no other parts)

CLICK HERE TO BUY ONE NOW !
LIMITED SUPPLY !

COMING SOON

 

Building Instructions...

* MAXI-FLASH BUILDING INSTRUCTIONS *
CLICK HERE TO VIEW THE BUILDING INSTRUCTIONS FOR THE MAXI-FLASH


 

Programming...

COMING SOON....

 

 

Testing and Operation Instructions...

Coming soon...

* MAXI-FLASH USERS' MANUAL (PDF) *
CLICK HERE TO DOWNLOAD THE USERS' MANUAL FOR THE MAXI-FLASH

Coming soon...
 

MAXI-FLASH  FAQ
 

Q1. How ?

A1. ...


Additional Notes...
 
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CUSTOMER PROJECTS, PICTURES AND VIDEOS!

Some Videos:
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http://www.???

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Some installation pictures:
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Earthmen Productions
Earthmen Productions
Dec-00-Mar-12

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