DIY programming pen

Posted on Thursday, April 4th, 2013 in DIY by DP


Anthony documented his programming pen build:

One minor annoyance when programming microcontrollers in-circuit, is that often quite a bit of PCB space is lost due to the programming connector. Furthermore, when you have to program many chips, repeatedly reconnecting the programming cable quickly becomes a chore. So when I found an article about constructing a programming pen that would help solve both of these problems, I decided to build one for myself.

This entry was posted on Thursday, April 4th, 2013 at 9:00 pm and is filed under DIY. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

3 Responses to “DIY programming pen”

  1. ken says:

    So why not use Tag-Connect’s $30 cable instead? Standard footprint…alignment pins, etc…14pin cable (or you can use the RJ11 jack version)…

    Just the alignment pins seem worth it…

  2. William says:

    I just the sparkfun locking header footprint and then hold the cable with male headers in it at an angle and it works great.

  3. NsN says:

    A few weeks ago I also designed my own pogo-pin based programming header. There were a couple of reasons, why I don’t like most of the existing solutions (not all points apply to all headers):

    * Too symmetrical. It shouldn’t be physically possible to plug the connector in the wrong way
    * Too large.
    * Too many holes. I rather have the connector a bit larger, if it leaves the other side free for routing.
    * Too few / too many pins. I made mine a 6 + 2 combination. 6 ISP pins + 2 optional UART pins
    * Not locking. I want to use the same connector for live debugging, I don’t want to hold it down the whole time.

    I based my design around 2 power pins as plated holes, with all other signals as single sided pads around them. After the debugging is done, the power pins can be used to power the device.

    I’m sure I will discover some major flaws, as soon as my boards arrive from Seeed.

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