Revised version of my 759 crossing controller
This is a controller board to make the AmericanFlyer 759/761 Danger bells do a wig-wag style of flashing and dinging. It will also control a crossing gate at the same time.
Note: The output is AC for incadedscent lamps. It is not intended to operate LED style accessories without suitable dropping resistors.
This is a heavily revised version that allows you to use a 696 track trip to activate it or an Infra Red sensor. I also added an ICSP connector to allow programming the Atmega 328 chip without removing it from the board.
It also has provisions for adding a small sound card (DY-SV8F) for bell sounds if you do not have an accessory with a bell. These are available on eBay for about $4.
There is a header with a jumper block that allows you to select either the 796 track trip or a common IR sensor board that outputs a signal when something passes in front of it. These IR sensors are commonly available on eBay for a dollar or two. Search for "IR Infrared Obstacle Avoidance Sensor Module For Arduino"
These can be mounted between the rails or better yet, in a section of rubber roadbed.
You can use the 696 or the IR board but not at the same time. You have to set a jumper to select which one.
Note: the connections on the 10 pins are different from the original version.
Pin 1= 18VAC, Pins 2345=Base Post. Pin 6=Input from 696 or IR board, Pin 7=Crossing Gate, Pin8 =Bell, Pins 9,10=flashing lights.
|1||LM2596 DC-DC convertor||BC1||DC-DC CONVERTOR||1||LM2596 DC-DC convertor|
|7||2P||CN1,CN2,CN3,CN4,CN5||ECO SCREW TERMINAL 5.00MM 2P AAA||5||2 Pin Screw Terminal 5.08|
|10||.1 mfd||C1,C3,C4,C6||CAP-TH_L6.5-W4.0-P5.00-D1.0||4||CBBCapacitor 330PF 100V|
|11||Button-6x6x6mm||SW2||SW-TH_4PIN-L6.00-W6.00||1||Switch,6*6*6Plastic head,260G, 0.25mm,Straight line|
|12||1X3||H2||3 PIN HEADER||1||3 pin header|
|13||Pwr LED||LED1||LED-5MM||1||5AR3UC12 800-1500|
|14||16Mhz||X1||HC-49S||1||49S DIP Crystal insulation film|
|17||.1 mfd||C5||CAP-HV-5.0*3.0||1||101K/1KV Capacitor|
|19||22PF||C2,C7||CERAMIC CAPACITOR 22PF||2||New SchematicLib|