To order, see the Prices page
(SLV 023)
Quick ref: List of Features & Setting-Up Procedure
Build it: Information (PDF 280K)
Date: Sep-01. Revision: 06-Jul-05. Note: this document
has not been updated with recent slight changes to the design, which is now at
version SLV023. Updates are given in a set of appendices and, in
addition to the above document, you should read
SLV023 Kit
Check (PDF 67K) and
SLV023
Bill of Materials (PDF 61K). You may also wish to refer to the
circuit
diagram (PDF 76K).
Other stuff: Questions and Answers | Troubleshooting|PCB (Easy-PC version 8, 32K)
You can make your own PCB from the file listed to the left.
(SLV031)
This is an upgrade to the above unit, which is described in
the document
Slave
Unit for Digital Camera (PDF 470K).
[CREGJ 57]
Date: Sep-04. Revision: none
Other stuff: Notes for Upgrade Kit | PCB (Easy-PC version 8, 22K) | Gerber/Drill files (ZIP 5K).
You can make your own PCB from the files listed to the left - or try without a PCB
(SLV051)
This product is a replacement for the combination of the above two items.
Quick ref: List of Features | Operating Instructions
Build it: Information (PDF 560K )
Date: Jun-05. Revision: 23-jul-05,
assembly-10.pdf
Note: The above document describes the version 1 software. The setting-up procedure for the present, version 4, software is different, so you will also need the following document...
Operating Instructions: for Version 4 software (PDF
64K)
Date: Dec-05. Revision: 14-Feb-06.
operating-V4_draft3.pdf
Old stuff: Operating Notes for Versions 1 to 3 [PDF 59K] Date: Oct-05. Revision: 18-dec-05, operating-V1_to_3_draft5.pdf
What's available...
- Software upgrade (programmed PIC)
- Fully-built units with version 4 software are available from Firefly.
To order, see the Prices page
Quick Ref: Bulb Firers
Build it: A High-Performance Flashbulb Firer – part
2 (PDF 240K)
[CREGJ 55] Date: Mar-04.
Revision: none
Flashbulbs are still the professionals’ choice for cave photography. This project by David Gibson – which is an update to his article in CREG journal 45 (Sept. 2001) – describes a compact, microprocessor-controlled bulb-firer that includes ‘seated’ and ‘fired’ indicators and a boost circuit to produce 24V from the 3V supply.
This project is currently suspended: I have no time to work on this any further, at the moment.
Quick ref: Infrared Filter Material
Cave photographers often make use of an infrared filter over a camera- mounted flashgun. The purpose of this is to allow the infrared light to trigger a slave unit, whilst avoiding illuminating the foreground of the shot with visible light.
You can order your own filter material from the address given in the notes.
A
Flashgun Isolator (PDF 268K)
[CREGJ 61] Date:
Oct-05. Revision and corrections: 25-oct-05
Digital cameras can be damaged by connecting them to a traditional design of electronic flashgun. In this article, David Gibson describes the problem in more detail, and updates his isolator circuit from CREG journal 60.
This project is currently suspended: I have no time to work on this any further, at the moment.