• I2C OLED Pinout Nightmare

    Jeremias • 08/28/2017 at 08:26 • 2 comments

    I have now ordered the OLEDs from three different vendors. Two of three times they had the "right" pinout (the pinout I used for the PCB design). The other time the VCC and GND pins were swapped. On the first picture you can see how I fixed this problem.

    The last displays I have ordered, came in these nice cases. I have to build a project which fits in there. (thinking of an ATtiny and a coin cell, ...)

  • Deauther / Packet Monitor

    Jeremias • 08/12/2017 at 17:04 • 1 comment

    I combined spacehuhn's deauther and packet monitor programs into one program and changed a few things, now the program runs on my controller.

    I can switch between the two modes by pressing left and right

  • Short Update

    Jeremias • 07/01/2017 at 16:11 • 0 comments

    I finally had access to a metal saw, so I cut the screws to the right length and screwed on some cap nuts.

    At the moment I am modifying spacehuhn's awesome esp8266_deauther code to get it running on my controller.

  • Demo video

    Jeremias • 06/11/2017 at 20:34 • 0 comments

    I made a short demo video how I use the controller to interact with my smartHome. It was a bit difficult to get the right exposure on the OLED display, but I think it is readable.

    I also received ~12€ from the "Hackaday Prize Seed Funding" a few days ago. A big thanks to Hackaday and the Hackaday community. I used the money to buy Andrew "bunnie" Huangs new book "The Hardware Hacker".

  • Hardware finished

    Jeremias • 06/05/2017 at 10:42 • 0 comments

    I soldered the PCB and assembled all the parts. I still need to cut the screws to the right length, but apart from that the hardware is finished. The PCB is functional, but there are some things I would change next time. For instance:

    • label the individual pins of the connectors
    • label the "reset" and "flash" buttons
    • use an 0805 diode package instead of an 0805 resistor package for diodes (on the PCB is no mark how the diode should be installed)

    I will make an example code, which shows how to use the buttons and control the LEDs. The code should be on github in a week or so.

    PS: If someone near to Austria wants a PCB, drop me a line, I don't need all of them.

  • PCBs

    Jeremias • 05/24/2017 at 13:14 • 2 comments

    The PCBs arrived yesterday, 16 days after ordering them. Impressive.

    Unfortunately I am not in my apartment until sunday evening. Maybe I have enough time to solder the board next week.

  • changed schematic, PCB ordered

    Jeremias • 05/07/2017 at 12:22 • 0 comments

    I have added a diode to every button. Now I can detect more than 2 simultaneous button presses.

    The circuit works pretty well on the breadboard. The multiplexed LEDs are flickering, but I think I can fix this in software.

    I also ordered the PCB today, it should be here in a month or so.

  • First Software Tests

    Jeremias • 04/30/2017 at 19:32 • 0 comments

    The PCB-Mill still needs some software tweaks, so I may get them manufactured at a PCB house and try the mill at my next project.

    Meanwhile I started writing a test program. For testing I use a NodeMCU board. I use this nice library by squix to communicate with the OLED.

  • 3D printed buttons

    Jeremias • 04/06/2017 at 18:38 • 0 comments

    Today I printed the buttons for the controller. The surface finish isn't that beautiful, but they fit nicely into the top acrylic plate.

  • Final PCB Design

    Jeremias • 04/02/2017 at 14:46 • 0 comments

    I have access to a small CNC-Milling machine. Therefore I designed an 1-layer board with relative thick traces 0.4mm (15.75 mils). I wasn't able to route everything on the top layer, so I have to use some jumper wires for the bottom layer.