Shonky Electronics!<p>It lives!</p><p>The <a href="https://mastodon.social/tags/rc2014" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rc2014</span></a> version of my FT245 based USB interface works exactly as intended with SCM, Basic and the 6850 version of CP/M</p><p>No more faffing with USB-Serial dongles and <a href="https://mastodon.social/tags/UART" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UART</span></a> settings for me, terminal software simply doesn’t care about baud rates and the like with this board,</p>
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#uart
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Olimex<p>New open source hardware board UEXT-3TO5V allow 5V devices and sensors to be powered and accessed by 3.3V UEXT boards <a href="https://olimex.wordpress.com/2025/06/10/new-open-source-hardware-board-uext-3-to-5v-converter-allows-5v-devices-and-sensors-to-be-connected-to-uext-boards-with-3-3v-levels/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">olimex.wordpress.com/2025/06/1</span><span class="invisible">0/new-open-source-hardware-board-uext-3-to-5v-converter-allows-5v-devices-and-sensors-to-be-connected-to-uext-boards-with-3-3v-levels/</span></a> <a href="https://mastodon.social/tags/uext" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>uext</span></a> <a href="https://mastodon.social/tags/oshw" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>oshw</span></a> <a href="https://mastodon.social/tags/sensor" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sensor</span></a> <a href="https://mastodon.social/tags/spi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spi</span></a> <a href="https://mastodon.social/tags/i2c" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>i2c</span></a> <a href="https://mastodon.social/tags/uart" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>uart</span></a></p>
Johannes Kastl<p>Dear <a href="https://digitalcourage.social/tags/homelab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homelab</span></a> bubble,</p><p>as is normal I have a dozen different SBCs (Raspi1, Raspi2, Raspi4,...) as well as some other thin clients running in my home lab. As none of them is connected to a monitor, each of them has some kind of serial-to-USB cable attached (to a serial output or to the Raspi GPIO pins).</p><p>Of course, I am lazy, and moving the laptop I am working on and attaching the right cable is too much effort. So I thought about finding another solution. Not sure if there is one and if I can afford it. So I would be glad if there is any input or ideas or hints or experiences or recommendations. Thanks in advance!</p><p><a href="https://digitalcourage.social/tags/homelab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homelab</span></a> <a href="https://digitalcourage.social/tags/serialconsole" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>serialconsole</span></a> <a href="https://digitalcourage.social/tags/uart" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>uart</span></a> <a href="https://digitalcourage.social/tags/raspi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>raspi</span></a> <a href="https://digitalcourage.social/tags/raspberry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>raspberry</span></a> <a href="https://digitalcourage.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a></p>
Rob Carlson :ally: :BLM:<p>Just discovered Matt Brown’s hacking <a href="https://epistolary.org/tags/IoT" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>IoT</span></a> channel and was amazed how quick it is to extract basically everything from an off the shelf <a href="https://epistolary.org/tags/TPLink" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TPLink</span></a> cellular device with <a href="https://epistolary.org/tags/UART" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UART</span></a> and some USB flash readers. It has 1M views so I’m probably late to the party but check it out anyway. </p><p><a href="https://www.youtube.com/watch?v=clESYc9BDvc" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=clESYc9BDv</span><span class="invisible">c</span></a></p>
Daniele Verducci 🧉I found the connection I made was not working. I connected the <a class="hashtag" href="https://social.ichibi.eu/tag/esp8266" rel="nofollow noopener" target="_blank">#esp8266</a> tx pin to the <a class="hashtag" href="https://social.ichibi.eu/tag/uart" rel="nofollow noopener" target="_blank">#uart</a> to <a class="hashtag" href="https://social.ichibi.eu/tag/rs232" rel="nofollow noopener" target="_blank">#rs232</a> converter's rx pin and vice versa.<br>So tried inverting it (rx to rx and tx to tx) and now it works perfectly... Not sure why the pins are labeled reverse on the uart to rs232 converter... 🤷♂️
Daniele Verducci 🧉At the end, all will fit in this enclosure (there was an adsl filter inside). I made some holes for the usb and the reset button. The front hole contained two rj11 sockets, I cut the central divisor and obtained a hole the perfect size for the <a class="hashtag" href="https://social.ichibi.eu/tag/uart" rel="nofollow noopener" target="_blank">#uart</a> to <a class="hashtag" href="https://social.ichibi.eu/tag/rs232" rel="nofollow noopener" target="_blank">#rs232</a> <a class="hashtag" href="https://social.ichibi.eu/tag/db9" rel="nofollow noopener" target="_blank">#db9</a> connector.<br>Most of my <a class="hashtag" href="https://social.ichibi.eu/tag/retrocomputing" rel="nofollow noopener" target="_blank">#retrocomputing</a> gear has the old <a class="hashtag" href="https://social.ichibi.eu/tag/db25" rel="nofollow noopener" target="_blank">#db25</a> connector, so I'll need an adapter anyway...<br><br><a class="hashtag" href="https://social.ichibi.eu/tag/zimodem" rel="nofollow noopener" target="_blank">#zimodem</a> <a class="hashtag" href="https://social.ichibi.eu/tag/wifi" rel="nofollow noopener" target="_blank">#wifi</a> <a class="hashtag" href="https://social.ichibi.eu/tag/modem" rel="nofollow noopener" target="_blank">#modem</a> <a class="hashtag" href="https://social.ichibi.eu/tag/hayes" rel="nofollow noopener" target="_blank">#hayes</a>
Daniele Verducci 🧉Every time I do some project "for fun" (= not for work) I try to learn something new, in that way i can say the time needed is not wasted.<br>So, this time I decided to try <a class="hashtag" href="https://social.ichibi.eu/tag/wirewrapping" rel="nofollow noopener" target="_blank">#wirewrapping</a> . This is a very simple circuit, with no board, so it's a very very simple case, but I tried and I liked it!<br><br>Here a photo while connecting the <a class="hashtag" href="https://social.ichibi.eu/tag/esp8266" rel="nofollow noopener" target="_blank">#esp8266</a> (already flashed with <a class="hashtag" href="https://social.ichibi.eu/tag/zimodem" rel="nofollow noopener" target="_blank">#zimodem</a> and configured to connect to my wifi) with the <a class="hashtag" href="https://social.ichibi.eu/tag/uart" rel="nofollow noopener" target="_blank">#UART</a> to <a class="hashtag" href="https://social.ichibi.eu/tag/rs232" rel="nofollow noopener" target="_blank">#RS232</a> adapter.
Daniele Verducci 🧉I'm going to build a <a class="hashtag" href="https://social.ichibi.eu/tag/wifi" rel="nofollow noopener" target="_blank">#wifi</a> <a class="hashtag" href="https://social.ichibi.eu/tag/serial" rel="nofollow noopener" target="_blank">#serial</a> <a class="hashtag" href="https://social.ichibi.eu/tag/modem" rel="nofollow noopener" target="_blank">#modem</a> for my <a class="hashtag" href="https://social.ichibi.eu/tag/amstrad" rel="nofollow noopener" target="_blank">#amstrad</a> PPC640. Something like <a class="hashtag" href="https://social.ichibi.eu/tag/theoldnet" rel="nofollow noopener" target="_blank">#theoldnet</a> 's wifi modem, but I'll use <a class="hashtag" href="https://social.ichibi.eu/tag/zimodem" rel="nofollow noopener" target="_blank">#zimodem</a> on an <a class="hashtag" href="https://social.ichibi.eu/tag/esp8266" rel="nofollow noopener" target="_blank">#esp8266</a> , because it worked ok with my <a class="hashtag" href="https://social.ichibi.eu/tag/commodore64" rel="nofollow noopener" target="_blank">#commodore64</a> and now I have some experience with it...<br>The idea is having the esp emulate an <a class="hashtag" href="https://social.ichibi.eu/tag/hayes" rel="nofollow noopener" target="_blank">#hayes</a> modem on the <a class="hashtag" href="https://social.ichibi.eu/tag/uart" rel="nofollow noopener" target="_blank">#UART</a> pins and convert it to rs232 using a <a class="hashtag" href="https://social.ichibi.eu/tag/max3232" rel="nofollow noopener" target="_blank">#max3232</a> module.<br>I also will need to solder a 9 to 25 pin <a class="hashtag" href="https://social.ichibi.eu/tag/rs232" rel="nofollow noopener" target="_blank">#rs232</a> adapter, because I absolutely don't remember where mine is (used last time a couple of home moves ago... 😅)<br><br><a class="hashtag" href="https://social.ichibi.eu/tag/dos" rel="nofollow noopener" target="_blank">#dos</a> <a class="hashtag" href="https://social.ichibi.eu/tag/bbs" rel="nofollow noopener" target="_blank">#bbs</a> <a class="hashtag" href="https://social.ichibi.eu/tag/internet" rel="nofollow noopener" target="_blank">#internet</a>
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