Bobo wrote:
I respect everything you say Vader1, but the circuit is not complicated. Yes, it is more complicated than a regular 2 LED bliking circuit, but it is not *that* much more complicated. The only hard part is organizing the circuit to be clean and make the actual pcb board itself. There is no programming for this circuit, it's all done by transistors and IC chips.
But I understand the labour is where the price comes in and also some of the circuit components can be pricey, so I do in fact respect RA and any other person who sells these !
I'm not trying to be hostile or anything, but with all do respect, I believe $100 US is too expensive for this type of circuit. Am I wrong? Could someone prove me otherwise please?
I'll try and put a price together on the component's themselves and post it here, then we can judge
Bobo wrote:
I'm not trying to be hostile or anything, but with all do respect, I believe $100 US is too expensive for this type of circuit. Am I wrong? Could someone prove me otherwise please?
journeymanprotector wrote:
I'll have mine soon, so I can figure it out, but what is the average running time for this assembly? What do they run on, is it 9v? How long will it run on an average name-brand battery, has anyone clocked it?
What's the life for this assembly estimated at? Will it burn out or anything to that effect?
Bobo wrote:
BTW, these are Canadian prices!
C1: 100uF = $0.50
C2: 0.1uF = $0.83
C3: 22pF = $0.83
U3: 7805 +5V = $0.89
U4: PIC 16F84 = $9.50 (most expensive component )
DISP1-5: 7 Segment 0.3" = $2.24
R12: 10Kohm = $0.40
R13: 4.7Kohm = $0.40
R14-20: 220ohm = $3.00
Q6-10: 2N7000 N-Channel MOSFET = still looking for price
R1-10: 330ohm = $3.50
R11: 4.7Kohm = $0.40
D1-20: Rect. LED's = $9.00
Q1-5: 2N7000 N-Channel MOSFET = still looking for price
U1: 4017 Decade Counter/Divider = $1.50
Total So Far: $32.99 CDN ~= $22.87 USD (not including the transistors yet)
Also, the little ribbon cable, and other parts like the pcb that would be etched are not included, but just for example, a 3"x5" pcb copper board is $3.49 CDN.
All prices above take into account the quantity of each component needed for one setup of the chest LED display.
I just called the store I always goto, but they ran out of the MOSFET's so I'll call another place soon.
Bobo wrote:
You know what you could do Shackman? Sell some PIC's that are already programmed for this circuit!