Help with IBM 4704 Hasu Converter

[fcoury]

I have flashed Hasu's TMK ibm 4704 converter hex into a Pro Micro and have the wiring below, but it doesn't seem to work. I have checked all the connections for continuity with a multimiter and made sure my Pro Micro's VCC is 5V (and not 3.3V) as well.

Is this supposed to work or am I missing something? Thanks!

[Sangdrax]

Is the VCC actually getting power from the USB? On mine, I had to bridge pad 11 down near the connector so it would put 5V to the rail instead of just powering the controller.

[fcoury]

Thanks for replying. But I believe it's powering properly (check picture below). But I am curious about how you did that bridge, can you give me more details? Thanks

Here's the pic:

[swampangel]

1. You may need an external 1k pullup resistor between VCC and Clock and between VCC and Data.

2. Are you actually building a converter for a 4704, or a different board from the same family like the pingmaster? If you're using http://www.tmk-kbd.com/tmk_keyboard/editor/ make sure you're selecting ATMega32u4 or "rev.1"

3. For my pingmaster, when I plug in the converter I have to wait about 10 seconds before the board is detected and ready to use.

[fcoury]

Thanks so much for the reply! I compiled it myself, but gonna try the website. If it doesn't work, do you have a link to a suitable pullup resistor? Thank you!

[fcoury]

So the problem was the firmware. I got the hex from the website and it's now working fine. Thank you so much swampangel!

[swampangel]

I always just fish around in my project box, but if you want to buy online, ebay or aliexpress will be fine: https://www.ebay.ca/itm/50Pcs-1-2W-0-5W ... :rk:3:pf:0

If you have any kind of local electronics store they will have what you need as well, possibly in a multi pack like https://www.thesource.ca/en-ca/tvs--and ... /p/2719018

Edit:

So the problem was the firmware. I got the hex from the website and it's now working fine. Thank you so much swampangel!

Glad you got it!