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+====== BS-1  Universal Led Flasher ======
+[[:english|Content]] -> [[:hardware-en|Hardware]] -> [[:hardware-en#interfaces|GCA]]
+^^^^By Peter Giling^^^^
+Many items in the market give a rather poor method of Leds just going on and off.\\
+This very small unit is more than that.\\
+The ready made and available printed circuit measures only 27 x 17 mm.\\
+The double sided and through-hole metalized board contains a small microprocessor.\\
+This makes it possible to have a selection of different programs for various tasks.\\
+The firmware can be extended with more selections, if somebody comes up with a good suggestion.\\
+For now, there are 10 available programs.\\
+Program selection is made by installing a little jumper on board.\\
+The board also contains the necessary resistors to connect LEDs, so all you have to do is connecting LEDs and power, nothing more.\\
+The selected program will be remembered and start anytime you power up.\\
+Power can be from 9 to 16Vdc, and power consumption is extremely low.\\
+But you will be surprised about the quality of the light patterns it will give you!\\
+Professional made pcboard is available for € 1,-- (excl shipping).\\
+Send email to //[[peter.giling@rocrail.net|Peter]]//\\
+Also for any other question regarding this unit or MGV-loconet modules ask Peter.\\
+\\
+===== Technical description =====
+The unit is build around a Microchip PIC12C675.
+\\
+The program is written in PicSimulator IDE Basic, from www.oshonsoft.com
+\\
+The supply is no more than a transistor and a Zener diode.
+\\
+It is made in such a way, that swapping the connections of power does not harm anything.
+\\
+The 5 connections for LEDs all have a resistor on board so LEDs can be connected directly.
+\\
+For all LEDs there is only one common (-).
+\\
+The connection marked #5 is used as input for programs 7 & 10 to activate the second function
+\\
+In program 9 (dutch AKI railroad crossing) this enables the choice between 2 flashing red LEDs or 1 white slow flashing led.
+\\
+In program 10 (german railroad crossing with barriers) Pin5 is used to activate the lights and barriers. Pin3 and 4 (and 6(-))can be used to connect MGV136 for powering barriers.
+\\
+Program selection is done by putting on jumper and take it off again.
+\\
+Each time the jumper is attached, the program will shift to the next one. For some programs (program 7..10) this might take a short time.
+\\
+After removing the jumper, the selection is stored in internal EEPROM memory.
+\\
+===== Available programs =====
+^ Description (up until now (sept 20, 2010)  ^  Used LEDs 1st task  ^  Used LEDs 2nd task  ^  Used LEDs 3nd task  ^  special remarks  ^
+|    |    |    |    |    |   |
+|  1  |  Nightrider  |  All 5  |    |    |    |
+|  2  |  2 independent flashers for police cars  |  1 and 2  |  3  and 4  |    |  use blue leds  |
+|  3  |  2 independent working turn light flashers  |  1 and 2  |  3  and 4  |    |  use orange leds  |
+|  4  |  High tower flashers  |  All 5  |     |    |    |
+|  5  |  Traffic blockade  |  All 5  |     |    |    |
+|  6  |  Normal flashers for dangerous road crossings  |  1 and 2  |  3 and 4   |    |    |
+|  7  |  Traffic lights (dutch pattern)  |  1 Red   |  2 Yellow  |  3 Green   |    |
+|  8  |  Traffic lights (german pattern)  |  1 Red   |  2 Yellow  |  3 Green   |    |
+|  9  |  Railroad crossing Dutch type (lights only)  |  1 White  |  2 Red  |  3 Red   |  connect pin 5 to ground to change pattern  |
+|  10  |  Railroad crossing  German type (with barriers) |  1 Yellow  |  2 Red  |    |  3 cmd barrier enter, 4 cmd barrier exit. For Servo driven barriers, use MGV136  |
+|  11  |  Welding flashes   |  1 blue  |   |    |     |
+===== New features for BS-1 =====
+New developments are always possible, let your fantasy runnung free.\\
+All leds will be dimmed 'as real'.\\
+Read this {{:mgv:hardware:bs-1-signals.pdf|manual}} for further options.\\
+All .hex files are in included{{:mgv:hardware:mgvbs1forsignals-1.0.0.2.zip|here}}
+===== How to connect leds =====
+{{ :gca:aansluitschema-s.pdf |Diagram for connecting leds}}
+===== The real thing =====
+{{:mgv:hardware:BS-1-example.jpg?600}}
+===== The Hardware =====
+|{{:mgv:hardware:bs-1-sch.pdf|The schematics}}|
+|{{:mgv:hardware:bs-1-pcb.pdf|The  pcboard and parts position}}|
+^N.B. Self made pc-boards are not supported! ^
+\\
+more questions? ask [[peter.giling@rocrail.net|Peter]]
+===== The Firmware =====
+{{:mgv:hardware:bs-1.zip|The firmware}}
+\\
+===== Partslist =====
+^ Qty  ^  Reference  ^  Part  ^
+|  5  |  R1..5  |  resistor 270 Ohm  |
+|  2  |  R6,R7  |  resistor 10 KOhm  |
+|  1  |  D1  |  Zener diode 5V1  400 mW  |
+|  1  |  C1  |  capacitor 100 nF  |
+|  1  |  T1  |  Transistor BC337-40  |
+|  1  |  U1  |  PIC12F675 DIL8  |
+|  1  |  Socket  |  DIL8  |
+|  1  |  Jp1  |  header 2 pins + jumper  |
+|  1  |  J1  |  PSS254 / 2G  |
+|  1  |  J2  |  header 6 pins  |
+===== Diode position =====
+{{:mgv:hardware:diode_position.pdf|this is how the zener diode is positioned}}