Recently, I managed to take a dump of the firmware and write a modified one using the pins that I marked with red by soldering 4 thin wires to those points. Now, I needed to perform this more than 50 pieces of HC05s. I tried to modify a SOIC-8 programming clip(testing clip), it firstly worked but since I could not hold that in place for minutes, it became a problematic.

What tool would you propose me to achieve this flawlessly? Otherwise, it is really hard to hold it in place and to read/write data without any problem.



The tool you seek is a custom fixture with pogo pins. In your case, it might be just a bracket to hold the PCB in place, and the relevant pogo pins (Vcc, GND, and programmer interface)

  • \$\begingroup\$ Could you please give me some concrete tool examples. I mean by just giving the appropriate size and everything? When I go to electronics shop, I dunno what to tell to the seller. \$\endgroup\$
    – ybaylav
    Nov 26 '18 at 12:01
  • \$\begingroup\$ In the example I found in HERE and HERE they somehow solved the problem with using pogopins. But, in my example there is one more layer and lots of different components thats stops me from placing pins horizontally. \$\endgroup\$
    – ybaylav
    Nov 26 '18 at 12:27
  • \$\begingroup\$ The key word is custom. Pogo pins can be purchased from various places, I doubt you will find them in a shop. You will have to figure out which one to choose (Size, tip style) and how to build them into a fixture or adapter. \$\endgroup\$
    – Lior Bilia
    Nov 26 '18 at 13:43

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