Marcin Juszkiewicz<p>If you need to test 74xxx chips then I have a proposal for you.</p><p>Author of MERA400 channel on YT made a new version of his IC tester. Open, Arduino based, looks easy to use.</p><p><a href="https://github.com/jakubfi/ictester" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="">github.com/jakubfi/ictester</span><span class="invisible"></span></a></p><p><a href="https://www.youtube.com/watch?v=osW2eTuzAC8" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=osW2eTuzAC</span><span class="invisible">8</span></a> for video (in Polish)</p><p><a href="https://society.oftrolls.com/tags/ttl" class="mention hashtag" rel="tag">#<span>ttl</span></a> <a href="https://society.oftrolls.com/tags/74xx" class="mention hashtag" rel="tag">#<span>74xx</span></a> <a href="https://society.oftrolls.com/tags/74xxx" class="mention hashtag" rel="tag">#<span>74xxx</span></a> <a href="https://society.oftrolls.com/tags/electronics" class="mention hashtag" rel="tag">#<span>electronics</span></a> <a href="https://society.oftrolls.com/tags/mera400" class="mention hashtag" rel="tag">#<span>mera400</span></a> <a href="https://society.oftrolls.com/tags/retrocomputing" class="mention hashtag" rel="tag">#<span>retrocomputing</span></a> <a href="https://society.oftrolls.com/tags/ictester" class="mention hashtag" rel="tag">#<span>ictester</span></a></p>