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Ramsey Electronics BULLSHOOTER ENDLESS LOOP BS2C, Assembly And Instruction Manual, Page: 3 / 28

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Ramsey Electronics BULLSHOOTER ENDLESS LOOP BS2C Assembly And Instruction Manual Download Page 3

BS2 

•

 3  

THE BULLSHOOTER 

ENDLESS LOOP 

VOICE RECORDER   

Ramsey Publication No. MBS2 

Price $5.00 

TABLE OF CONTENTS 

 

Introduction ............................................ 4 
Circuit Description.................................. 5 
BS2C Parts List...................................... 7 
Parts Layout Diagram ............................ 9 
Assembly Procedure............................ 10 
Schematic Diagram.............................. 14 
Initial Testing and Operation ................ 20 
Using the BS2C ................................... 20 
Case Up Instructions............................ 25 
Troubleshooting ................................... 26 
Warranty............................................... 27 

KIT ASSEMBLY 

 AND INSTRUCTION MANUAL FOR 

RAMSEY ELECTRONICS, INC. 

590 Fishers Station Drive 

Victor, New York 14564 

Phone (585) 924-4560 

Fax (585) 924-4555 

www.ramseykits.com 

Summary of Contents for BULLSHOOTER ENDLESS LOOP BS2C

Page 1: ...able line level output 8 separate message locations totaling up to 8 minutes or combine into one 8 minute message Up to a 8kHz sample rate for good audio reproduction to 3 4kHz Digital speaker volume control and 8 ohm speaker output Single Play and continuous repeat mode with programmable delays 0sec 0 5sec 5sec 30sec 1min 10min 30min 60min Easy to record a message and allows monitoring of recordi...

Page 2: ...tion Finder Kit HR Series HF All Mode Receivers QRP Series HF CW Transmitters CW700 Micro Memory CW Keyer CPO3 Code Practice Oscillator QRP Power Amplifiers RAMSEY MINI KITS Many other kits are available for hobby school Scouts and just plain FUN New kits are always under development Write or call for our free Ramsey catalog ENDLESS LOOP VOICE RECORDER INSTRUCTION MANUAL Ramsey Electronics publica...

Page 3: ...Parts List 7 Parts Layout Diagram 9 Assembly Procedure 10 Schematic Diagram 14 Initial Testing and Operation 20 Using the BS2C 20 Case Up Instructions 25 Troubleshooting 26 Warranty 27 KIT ASSEMBLY AND INSTRUCTION MANUAL FOR RAMSEY ELECTRONICS INC 590 Fishers Station Drive Victor New York 14564 Phone 585 924 4560 Fax 585 924 4555 www ramseykits com ...

Page 4: ...ure makes the Bullshooter a truly unique device A quick push of the RECORD and PLAY buttons sets up the BS2C to record up to a full eight minutes of audio depending on how you have set up the sample rate and what message location you start at See Using the BS2C Use the on board microphone to record a quick message or press both UP DOWN keys to enable use of the line level input for recording from ...

Page 5: ... a low dropout 1 5 Amp regulator though we will hopefully never pull that much current with the BS2C during operation This part smoothes out the incoming usually noisy wall wart power supply voltage into a nice clean predictable voltage to supply all of the other components The BS2C brains The brain of this kit is a nice Motorola microcontroller the MC68HRC908JK1 This part contains 1 5K of ROM for...

Page 6: ...ed for the voice recorder can be used to drive U4 making efficient use of the I O lines on the microcontroller It has the added benefit of being very low noise during operation so as not to interfere with the recording U1 A U1 B The line level circuit This circuit takes the differential output from the sound recorder and converts it to single ended so that you can use it properly on RCA type conne...

Page 7: ...horizontal trimmer pot Marked 103 orange adjustment R6 Semiconductors 1 1N4000 series diode epoxy case marked 1N4000 to 1N4004 D2 1 Red LED D6 1 Green LED D5 1 LM1086CS 3 3 3 3Volt 1 5A voltage regulator VR1 1 LMC6482AIN Dual Rail to Rail Opamp IC U1 1 ISD5008P Voice Recorder IC U2 1 74HC595AN Serial to Parallel shift register IC U3 1 MC68HRC908JK1 Microcontroller IC marked with white sticker U3 1...

Page 8: ...ereo audio cables Speaker Case and Knob Parts Top Cover Bottom Base Tray 4 Short Phillips Head Screws 2 Long Phillips Screws Front and Rear Plastic Panels with Labels 4 Rubber Feet Appropriate Knobs for Kit Required Tools Pen or Pencil Small Phillips Head Screwdriver Soldering Iron 60 40 Rosin Core Solder Wire Clippers Safety Glasses ...

Page 9: ...BS2 9 BS2C PARTS LAYOUT DIAGRAM ...

Page 10: ...hem or to others previously installed BS2C ASSEMBLY Use the boxes to check off your progress Check all received parts against the Parts list on page 7 and 8 The parts list describes the various markings that may be found on the kit parts In ALL the following instruction steps our word INSTALL means this Insert the part oriented correctly into its correct holes in the PC board If helpful gently BEN...

Page 11: ...er the rest of the pins 2 In the same way install U1 the LMC6482AIN dual rail to rail opamp chip Line up the notch on the part with the notch shown on the PC board silkscreen and Parts Layout Diagram Be sure all 8 leads are through the board and the part is flat before soldering them in 3 Next we ll install the socket for U3 The socket has a notch similar to the one on the PC board simply to make ...

Page 12: ...tice especially in RF circuits and your board will look neatly and professionally done if you keep the parts low 10 Next install C23 10uF electrolytic cap right next to C3 marked 10uF As in the last step follow the sign for correct placement 11 Install VR1 an LM1086CS 3 3 voltage regulator 3 3 volts The body of the part is meant to lay down on the silver square on the board and you ll want to sold...

Page 13: ...ced upright rather than flat like the other resistors we ve installed so far 17 Install R9 2 2k ohms red red red The body of the part is placed in the hole marked with a circle and the other lead is bent over to fit in the other hole Again keep the lead lengths short and the part flush to the board 18 Install R2 10k ohms brown black orange 19 Install R1 also 10k ohms brown black orange 20 Install ...

Page 14: ...BS2 14 ...

Page 15: ...BS2 15 ...

Page 16: ...ce not to have to worry about the polarity of these ceramic disc caps isn t it 38 Install L1 22uH inductor red red silver bands This part is very similar to a resistor but fatter around the middle It s the only part with those color bands so you shouldn t have any trouble identifying it It has no polarity so just insert and solder it 39 Install C15 0 1uF ceramic disc capacitor marked 104 40 Instal...

Page 17: ...nt panel board Just a few parts there and we ll solder the boards together then you ll be just about ready to fire up your Bullshooter Pretty exciting huh Well let s get moving then 57 We ll start at the middle of the board with the smallest part Install R18 2 2k ohms red red red We started with this one because it s small and sits flat on the board and would be difficult to put in later when you ...

Page 18: ...e small microphone cartridge Because the case is connected to the ground lead on the part and that lead is not attached to ground in this kit you ll want to leave a bit of space between the body of the microphone and the PC board This is one of the times we won t tell you to make sure that the part is flat to the board before soldering Line the part up in the circle on the silkscreen leave a littl...

Page 19: ...ll get back to it 67 Take the main PC board and line the smaller front panel board up to the main board so that the dual header pins can be soldered to the corresponding pads on the main board All lined up Good Don t grab your soldering iron yet though We re going to be sure that the front panel PC board fits up against the kit s front panel before permanently attaching the boards together When th...

Page 20: ...etween the pads of the LED heating both pads at once Once the solder is heated you can either push the LED back with a fingertip or move it forward with needlenose pliers to the correct position in the front panel Once you take the iron away things will cool and you ll have the LED where you want it If necessary do the same with the other LED Again if they look good don t bother changing things 71...

Page 21: ...ry but message 4 crosses into 5 and 6 If you were to play message 5 you would start the player at partway into message 4 Keep in mind you are limited in message length by its location in respect to the end of memory Message 1 you can record the full 8 minutes message 4 only 1 2 of the memory and message 8 only one min ute So when you are planning on where to store your messages pick ad dresses acc...

Page 22: ...rophone though J5 and the third way is to record RCA levels through J9 By default the BS2C is set up to select the microphone This is indicated by the LACK of a decimal point on the display If you plug in an ex ternal microphone the BS2C automatically switches off the front microphone in favor of the external microphone To switch to the RCA line level input press both of the UP and DOWN keys at th...

Page 23: ...in time delay set the time using that section of the chart When you ve chosen your delay time press the STOP button to save the setting Also don t forget that the delay time is the time you set plus the time it takes for the mes sage to play The delay time starts at the end of your message and repeats it at your desired interval The next interval will be the time you set in addition to the time th...

Page 24: ... for feed through operation when in playback mode to get lev els adjusted for various uses Connecting it all together Connecting this product couldn t be easier Simply plug an 8 ohm speaker into J12 using a 3 5mm jack Plug in the power and turn the unit on If you wish to connect a line level audio source to record from simply connect it at the LINE IN jack using the correct cable for your device I...

Page 25: ...2 You ll probably want to put the button cover on S1 the power switch before putting the board assembly into the case It might be difficult to get it on after 3 Insert the board into the case with the knob buttons and LEDs ex tending through the holes in the front panel 4 Raise the rear portion of the PC board and extend the jacks through the rear plastic plate Insert the plate into the grooves on...

Page 26: ...l erasures by bumping the wrong key The LEDs work but nothing else happens 1 Make sure U3 and U2 are properly seated and there are no bent over or bent under pins 2 Make sure you have your speaker properly wired No LEDs light 1 Check for 3 3VDC on the output pin of the regulator 2 Make sure your power adapter is between 5 and 12VDC center pin posi tive Alternately you can run the kit from 4 AA cel...

Page 27: ...h be assured that the 1K ohm resistors are actually the missing 10 K parts Hum m m I guess the red band really does look orange Ramsey Electronics project kits are packed with pride in the USA If you believe we packed an incorrect part or omitted a part clearly indicated in your assembly manual as supplied with the basic kit by Ramsey please write or call us with information on the part you need a...

Page 28: ... Core Solder RTS12 Needle Nose Pliers PTS401 Small Diagonal Cutters PTS400 ADDITIONAL SUGGESTED ITEMS Helping Hands Holder for PC Board Parts HH3 Desoldering Braid RTS08 BS2C Endless Loop Voice Recorder Kit Quick Reference Page Guide Introduction 4 Circuit Description 5 BS2C Parts List 7 Parts Layout Diagram 9 Schematic Diagram 14 Using the BS2C 20 Troubleshooting 26 Warranty 27 TOTAL SOLDER POINT...

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