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LB01.02.01 Lightning Box - Board 2 The Flashgun Module

3 years ago 315
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  • BOM
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Description

This unit activates a relay in response to a negative pulse in the trigger line. The relay contacts close the 'fire" contacts on a flash module salvaged from some disposable cameras. The relay operates for 100mS then there is a 5 second inhibit before it can activate again, allowing the flash unit to recharge. There is a 12v to 1.5v DC-DC converter (eBay based on LM2596 SK chip for 99pence each) mounted on the board to power the flash units from the 12v DC supply. It is best to have a separate supply for this board and another for the trigger board as there can be a lot of interference causing misfiring. For the power supply I used a LED lighting Driver / power supply as these are small, inexpensive and can deliver up to 1 Amp.

Documents

Lightning Box Board 2

PBC1

Board 2

PBC1a

BOM

ID Name Designator Footprint Quantity Supplier
1 NE555P U2,U1 DIP8 Big Pads 2 eBay
2 24k R01 AXIAL-0.4 1 Maplin
3 0.01uF C01,C04 RAD- Cap 5mm 2 Maplin
4 1N4007 D01,D05,D6 1N4007 3 Maplin
5 KF2EDGK KF-6P P2 WJ126V-5.0-6P 1 eBay
6 24K R02 AXIAL-0.4 1 Maplin
7 TIP31C Q1 TO-220(TO-220-3) 1 Maplin
8 10k R04,R07 AXIAL-0.4 2 Maplin
9 Flash D02 LED2-2.54-D5.0MM 1 eBay
10 Inhibit D03 LED2-2.54-D5.0MM 1 eBay
11 460R R05,R06 AXIAL-0.4 2 Maplin
12 DC-DC U3 DC-DC_CONVERTER eBay 1 eBay
13 G5V-2-12V RELAY1 RELAY-OMRON_G5V2 1 LCSC
14 SWITCH-6x4.5_TH SW1 SWITCH-6X6X5_TH 1 LCSC
15 10u C03 CAP-D5.0XF2.0 1 Maplin
16 220u C02 CAP-D10.0XF5.0 1 Maplin
17 0.1uF C5 RAD- Cap 5mm 1 Maplin
18 Trigger D4 LED2-2.54-D5.0MM 1 eBay
19 GS019-2.54-4P-1 CN1 H4-2.54-8.52X6.3MM 1 SeeedStudio

Attachments

Filename Download
LED Driver Power suply.jpg
DC DC converter LM2596 SK.jpg
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