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Nice one Michael! And sorry about the oversized images! Hope it wasn’t too much of a drama to resize them all.
I wanted to ask a few things: You may have noticed I had to cut an L-shaped out of the plastic covering, this was due to the fact that the Power Jack and the 10uF capacitor stand taller than the DET button and the LED display. There was a space for me to lay the 100uF capacitor on it’s side. I was thinking if I purchase a second one and do a rebuild, do ‘stubbier’ 10uF capacitors exist? Also, would there have been a problem if I soldered the Power Jack on the underside of the PCB? I also would have liked to solder the 4 LEDs leaving more lead so they too stand taller, but was not foresightful enough to do so. They still look great but it would have been awesome to have the rounded tip of the LEDs protruding just slightly from out of the holes in the casing. Would there be an issue if I do this in a rebuild?
Just wanted to round of by saying a big thank you for your all help and support. The defusable clock is an awesome and really fun build, I will be recommending it to all of the airsoft teams and clubs we play with and against here in Barcelona. All the best,
The man on the inside.
You, Sir, are a legend!
Am now very pleased to confirm that 6 x C cells powers the device with no problems! Going to put the finishing touches to my ‘bomb’ and will post pics and a how to once it’s all done. If not tonight, tomorrow a.m. (GMT)
Many, many thanks Michael.
Hi Michael
Got the device and it’s all soldered and working nicely from a 9v DC power supply (plugged into socket at home).
I opted for C cells instead of D cells as I couldn’t get 6 x D cells to fit in the briefcase I’m putting it all in to, but it doesn’t work. However this could be how I’m connecting the C cell holders.
I have purchased 1 x 4 C cell holder like this one: http://www.amazon.com/BATTERY-HOLDER-4-X-C-CELL/dp/B001DB6KH2
and 2 x 1 C cell holder like this one: http://www.amazon.com/BATTERY-HOLDER-1-X-C-CELL/dp/B000LR28AM
They each have a black and red wire at each end which ultimately get connected to a 9v plug like the one in the attached photo.
Can you advise me on how this should be wired up so I can conclusively decide whether C cells are sufficient or not. The C cells I am using are Alkaline cells of 1.5v and 7300mAh
Many thanks in advance!
Wow! Amazing response time. Thanks very much!
Being able to choose the countdown time was the selling point for me on the device. Most games will only usually last about 30 mins, times that by 2 or 3 games and some time-wasting in between and we’ve got about 2 hours gaming time, so hopefully the 6 D cells you suggest will last at east that.
I intend to construct two devices to be used with the de-fusable clock. One is a briefcase ‘bomb’ and the other will be the ‘sticks of dynamite’ like in your example. I’m thinking I can house the D Cells where the inner dowel rod would/should go, encased in a plastic tube and surrounded by the remaining 6 rods.
Will also be looking to add a key mechanism in the future to stop the timer instead of cutting the wires. I don’t know how difficult that would be but it would work great with the briefcase scenario….you know, capture the key then locate the ‘bomb’ and defuse it.
Anyways, thanks again for the swift response. I’ll let you know how I get on.
