May 12, 2011
News - SparkFun's Awesome Solar …
about 2 months ago
Which inverter was chosen for this system? Kudos to SparkFun for plugging into the sun.
about 4 months ago
The price is too high in my humble opinion. A quick look at some catalog distributors reveals that the parts for this kit come to about $10 (in quantities of 1000) plus the board ($3 at most). Even at a selling price of $20 Sparkfun would be making a healthy margin and likely sell a lot more of these. I would also like to see Sparkfun offer just the circuit board for kits like these. Just my opinion.
about 6 months ago
This looks like a great product. What is the rated CRI, color temperature, lumen maintenance vs. time, recommended thermal resistance of the heatsink, and maximum junction temperature for this LED. Can you provide the datasheet for these?
Everyone has a choice. But why would you not save $13 by getting the Mega from a cheaper source like Mouser and then be able to buy more goodies from SparkFun with the money saved?
Just checked today and Mouser has the ARDUINO MEGA2560 REV 3 for $45.95.
I just noticed that Mouser now has the Arduino Uno R3 for $24.51.
This module has the following: IC ($1.35), crystal ($0.27), holder ($0.27), 0.56 sq in pcb (~$0.15) capacitor ($0.04), CR1225 (~$0.20) and assembly (~$0.15) for a grand total of $2.43, this even before negotiating with suppliers on volume pricing. Does anyone else think this module is overpriced? For that matter, do all Sparkfun products have such ridiculous margin (approx. 515% margin in this case)? If the answer is yes, I see a real business opportunity here!
Does the serial monitor work on the Uno integrated into the arLCD? I have tried and was unsuccessful reading output through the serial monitor of the Arduino IDE.
about a year ago
The data sheet indicates max temperature error of +/- 2C from -25C to 85C (pg 3) but also suggests max error of +0.5/-0.15C (fig 3) over the same range (although all figs are subject to the qualifier “typical characteristics”). Any idea which accuracy limit is correct? Fig 6 also seems too good to be true, it would be useful if TI specified the maximum temperature error at 25C.
No public wish lists :(
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