<div dir="ltr">This is about the minimalist wifi ESP project that logs data to a host and then deep sleeps<div>And in case you were missing my spreadsheet... (Sorry, no coroplast in this yet,though it may make a good base <grin>)</div><div><br></div><div><img src="cid:ii_lcoi23z94" alt="image.png" width="511" height="322" style="margin-right: 0px;"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jan 8, 2023 at 11:20 PM George Bowden <<a href="mailto:gtbowdeng@gmail.com">gtbowdeng@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Here is a photo of my current prototype using the soldered adapter which I am trying to avoid.<div>I remembered that originally I thought of soldering the wires to the contacts while held in place by the 3d printed adapter, and then removing the adapter. This makes the end product even thinner because there is no adapter needed the end. And the adapter can be made bigger, without metal pins to stiffen it. It is only used to hold the wires in place while soldering, and while programming.</div><div><img src="cid:ii_lcoh53ul3" alt="20230108_214612.jpg" width="397" height="436"><br></div><div><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jan 8, 2023 at 10:49 PM George Bowden <<a href="mailto:gtbowdeng@gmail.com" target="_blank">gtbowdeng@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi PiMakers with 3D printers.<div>I need a small item 3d printed. It is an adapter for a wifi module.</div><div>Here a picture of the concept. My dimensions are a little different.</div><div><img src="cid:ii_lcocfa6j0" alt="image.png" width="379" height="266" style="margin-right: 0px;"><br></div><div><a href="https://www.tinkercad.com/things/1hrF3ju8OWE" target="_blank">https://www.tinkercad.com/things/1hrF3ju8OWE</a></div><div><br></div><div>It is a socket for holding one of these ESP8285 modules</div><div><img src="cid:ii_lcocj3ft1" alt="image.png" width="473" height="271"><br></div><div><a href="https://twitter.com/esp8266/status/903774378042818560" target="_blank">https://twitter.com/esp8266/status/903774378042818560</a></div><div>The pcb board thickness is 0.74mm, as measured with my callipers. The module's can adds a couple of mm, but that doesn't come into the design.</div><div><div><br></div><div><br></div><div>The contacts are aligned front to back.</div><div><br></div><div>If I lay stripped 30 awg wires (0.2546 mm diameter) into the slots for the wires, I can push the module into the board slot to make contact with the wires. Then I cut the wires poking through the bottom, along the board edge, to break the connection from the front pad to the back. I may have to cut the wires and bend them into place beforehand if they dont slide into place. The contacts are aligned front to back.</div><div><br></div><div>The Board slot needs to be 1.2492 (0.74+2*0.2546) minus the compression of plastic to keep the wires pressed against the contacts.</div><div>I don't know the compression characteristics of the plastic used in 3D printing. the wires may sink .1mm into the plastic. If so a slot of 1.1mm may be right. I could fill a thticker slot of 1.25mm with slips of paper to get the right compression.</div><div><br></div><div><div>Here is a rough sketch. The Blue is the part to 3D print</div><div><br></div></div><div><img src="cid:ii_lcofvs963" alt="image.png" width="669" height="302" style="margin-right: 0px;"><br></div><div><br></div><div>There are no sockets commercially available for this pitch and board thickness. Currently, I am using an adapter soldered to the board. My adapter would allow removal of modules, and specific adapters for programming.</div><div> I would like the socket to be about the thickness of the Lithium Ion flat battery (6mm), but the plastic may flex too much for that unless steel pins are formed into the plastic .<br></div><div><br></div><div><br></div>-- <br><div dir="ltr"><div dir="ltr">George Bowden 250-893-7423<div>Victoria BC</div></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr">George Bowden 250-893-7423<div>Victoria BC</div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">George Bowden 250-893-7423<div>Victoria BC</div></div></div>