Jack Gassett Posted August 6, 2014 Report Share Posted August 6, 2014 Ok, I am finally settled in and am starting to work on the LogicStart Shield for the Papilio DUO. I would love all feedback and ideas to help shape this new board. One of the biggest things I'm hearing so far is let's make it cheaper so the Papilio DUO and LogicStart Shield combo are low cost. That sounds good to me here is what we can do: Right off the bat we are eliminating the most expensive component from the board, there is no need for the SPI ADC since the Papilio DUO already has an ADC. I think we should break out the ADC to Grove headers but that is very inexpensive to do.The second thing I think we should get rid of is the Joystick and replace it with smd directional buttons. The joystick is hard to source, expensive, and the button cap is expensive too. Directional buttons do the same thing and drastically reduce the cost.Use slide switches from the Seeed Open Parts library... That can theoretically bring down the price. They may not be suited for a board like this though. Ideas to make the Shield better:I'm thinking of adding some WS2812b RGB LED's to the board. The big question is how many, I don't want to drive up the price too much. I'd say either add 1 or add 8 to match up with the single color LED's on the board. 8 is a bit risky because if I'm off on the price that adds up pretty quickly... It looks like on taoboa WS2812b chips are going for around 10 cents each. If that is what I can actually get them for then it will be a no brainer to add 8x.10= 80 cents added to the BOM. But if there are markups in the supply chain and they are more like 30 cents each then I start to get into trouble... Leave the right 16 bit Wing header completely open for extensibility. Anyone have any more ideas? Hamster what do you think? Anything you would like to see done? Do you think low cost is the way to go here? Thanks,Jack. Quote Link to comment Share on other sites More sharing options...
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