Counting counting counting ...

23 Apr 2011

Hello Brmlog readers!

While Biiter and Stick are working hard on the software, and firmware, our hardware developement is now on debug phase.

I found lot of things what need to be improved or totaly changed ...

I also made some calculations to be sure how much money we spent on this project. Here are the results :

Part	Value	price 1pcs	price 100pcs
C1	10uF	0.18	0.156
C2	10uF	0.18	0.156
C3	100nF	0.15	0.105
C4	10uF	0.18	0.156
C5	10uF	0.18	0.156
C6	10nF	0.15	0.105
C7	10nF	0.15	0.105
C8	100nF	0.15	0.105
C9	100nF	0.15	0.105
C10	100nF	0.15	0.105
C11	100nF	0.15	0.105
C12	100nF	0.15	0.105
C13	100nF	0.15	0.105
CN1	miniUSB conn	0.639	0.542
IC1	741G3157DCKR	0.743	0.308
IC2	741G3157DCKR	0.743	0.308
IC3	741G3157DCKR	0.743	0.308
IC4	741G3157DCKR	0.743	0.308
IC5	741G3157DCKR	0.743	0.308
IC6	741G3157DCKR	0.743	0.308
L1	100uH	0.422	0.358
LED1	Green 1206	0.186	0.149
R1	33R	0.12	0.03
R2	33R	0.12	0.03
R3	1k5	0.12	0.03
R4	150R	0.12	0.03
R5	10k	0.12	0.03
R6	3K9	0.12	0.03
R7	300R	0.12	0.03
S1	tactswitch	0.639	0.542
SV1	header conn	0.271	0.229
SV3	header conn	0.271	0.229
SV4	header conn	0.271	0.229
U$1	AD9835BRUZAD9835BRUZ	25.51	16.57
U$2	MCP6S21-SO8	2.699	1.241
U$3	MCP6S26-SO14	4.746	2.438
U1	LPC1343_QFP	7.31	4.376
U2	LM1117SOT223	1.567	1.241
U3	OSCILLATOR 50MHz	6.683	4.18
U4	OSCILLATOR 12MHz	6.683	4.18
PCB	PCB	14.744	5.71

	SUM	80.009	45.841

All prices are in USD.

You can say ... $80 for board with ARM processor is so much, but as you can see we implemented DDS generator which can handle the signal generation so MCU has a much more time to do other stuff like communicating trough USB or AD conversion.

... more info and videos coming soon

Sargon