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  • If you just want nrf52 device with battery and screen and don't mind taking it apart to get GPIOs then the Magic3/C17 is cheapest and is even nrf52840 and relatively easy to open (price is about 11EUR with shipping and taxes from aliexpress)

    I wanted to ask you, I will have a look myself, but did you happen to find any unused pins on the board, like you did for the dsd6 back then?

  • I found 3 pads on the back that were not listed on @fanoush's Magic3 pin table: D13 (unmarked, grouped with SXD,TXD,D+,D-), D28 (unmarked, to the far right of that cluster), and D27 (unmarked, to the near right, below and to the left of D28). I also reused I2C SDA/SCL as I have removed the touchscreen. Of course, that's the ACCEL lines as well, so you'd have to write a cooperative routine that makes sure they don't interfere with each other.

    Also good for hacking is the DT28 (also cheap on AE). No "new" pins that I found, but you can find the touchscreen pads (SDA,SCL,INT,RST). When I get a chance I can check the RX/TX to see what they are...

  • Also good for hacking is the DT28 (also cheap on AE).

    Do you have a link to the item on AE? The one I have bookmarked in my wishlist is gone.

  • I found 3 pads on the back that were not listed on @fanoush's Magic3 pin table: D13 (unmarked, grouped with SXD,TXD,D+,D-), D28 (unmarked, to the far right of that cluster), and D27 (unmarked, to the near right, below and to the left of D28).

    thank you for this post, I had a look and I did found the pins you mentioned. D13 is the RxD I think, it is unmarked as you said but it is next to the TxD, so I guess it is the RxD.

    The TxD is pin D38, and pin D46 is active on the magic too, the one in the middle on the key connector, so 5 easy solder pins in total. Thanks.

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