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---
layout: post
title: EmonTx Shield SMT progress
date: '2013-07-29T07:47:00.000-07:00'
author: Trystan Lea
categories:
- emonTxShield
modified_time: '2013-08-05T09:02:22.112-07:00'
thumbnail: http://1.bp.blogspot.com/-_CKiLuqGL3s/UfZ6R_vhOKI/AAAAAAAACvE/0skpCp9xhx0/s72-c/emontxshield.jpg
blogger_id: tag:blogger.com,1999:blog-2472065242652647619.post-261218159566240334
blogger_orig_url: http://openenergymonitor.blogspot.com/2013/07/emontx-shield-smt-progress.html
---
The latest emontx shield SMT board revision (v2.4) arrived a couple of days ago.<br /><br />This revision carries on from the developments described in the previous blog post here:&nbsp;<a href="http://openenergymonitor.blogspot.co.uk/2013/06/emontx-shield-smt-with-new-layout-in.html">http://openenergymonitor.blogspot.co.uk/2013/06/emontx-shield-smt-with-new-layout-in.html</a><br /><div><br /></div>The improvements in v2.4 are:<br /><ul><li>The DS18B20 connector is bought out to the edge with screw terminals.</li><li>There's an FTDI connector as the shield covers the FTDI connector on the NanodeRF.</li><li>The jumpers are 2.54mm headers rather than surface pads that are soldered, making them easier to change.</li><li>The RFM12 footprint is moved further in on the board so that there is space for the <a href="http://3.bp.blogspot.com/-2kD9f3Dosxc/UfEwb_GzQYI/AAAAAAAAiU8/6ZEmjZ6SHMQ/s320/20130725_145657~01.jpg">Ciseco SRF with its on board chip antenna</a></li></ul><br /><div class="separator" style="clear: both; text-align: center;"><a href="http://1.bp.blogspot.com/-_CKiLuqGL3s/UfZ6R_vhOKI/AAAAAAAACvE/0skpCp9xhx0/s1600/emontxshield.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="433" src="http://1.bp.blogspot.com/-_CKiLuqGL3s/UfZ6R_vhOKI/AAAAAAAACvE/0skpCp9xhx0/s640/emontxshield.jpg" width="640" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">There was one small but crucial mistake, I got the RX and TX on the FTDI connector the wrong way around!!</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;"><b>Next step:</b> switch the RX and TX around and send the board off for production.</div>