PCB Development update

Posted by openPicus | On: Mar 31 2010

We started pcb development and we want to keep low cost (2 layers) and ease of assembly.

So we spoke once again with Microchip marketing and we decided to use 44pins QFP instead of Qfn. Yes 4mm bigger but easier to solder (0.8mm pitch)

We also decided to avoid smt side pads to remain on the 2 layers.

I’ll post the first review of PicusWiFi PCB tomorrow and in 10 days we’ll assemble 10 samples to start apps development


  1. xinbar says:

    This is an interesting project. I’m curious what the expected cost of the components and pcb is?

    Also I’m curious how the software will be organized? I’d be interested in using the 4 ADC’s to get voltage readings. If I wanted to get those voltage readings from PC software, I’d just use the IP address and connect to the built in webserver? How can PC software discover the IP address of the device? What kind of user interface is needed on the device itself? For example is a display and buttons required so that the user can setup the WEP and WPA information? Or are there some other means to setup the unit?

    Very interested in this project

  2. picus says:

    the cost of of the module will be less than 40 euro.
    PIC 24F 2.4 Euro
    WIFI module ZeroGWireless 21 Euro
    Crystal and passive 3 Euro
    Connector 0.5 Euro
    Manufacturing and testing 2.2 Euro
    PCB 0.9 Euro

    The module will show his ip address on a network as well as a network name (so you’ll be able to lookup for a module)

    The display we decided to go for a 2*16 char and there you can display all the info about WLan or sensors status.
    Also a Matrix keyboard will be available (lot of Digital Inputs are free)

    The software will be organized in C and we’ll give the example source code for free. We’ll also work on a header file to semplify the variables name for easy, user friendly programming

    If you have any idea just send us, we’d like to share info with the openPicus community

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