<commit_before>---
layout: docs
title: Add-on Board
---

# Add-on Board

Soldering the resistor to between the power and data lines of the sensor cable can be a bit tricky. Especially if you want to connect more than one sensor to your Pi (as you'd solder the resistor to two power and two data lines!).

To make things easier, I designed a (very) simple board. It lets you connect up to five sensors, all you need to do is crimp the sensor cables with the appropriate connector.

<mark>I have a limited number of boards available for FREE, get in touch via <a href="http://gitter.im/temperature-machine/">Gitter</a> or Twitter (DM @jamanifin) if you're interested.</mark>

<div class="row">
  <div class="col-sm-6 col-md-4">
    <div class="thumbnail">
    <a href="../img/temperature-machine-add-on-1.png">
      <img src="../img/temperature-machine-add-on-1.png" alt="The raw board">
      </a>
      <div class="caption">
        <h3>Basic PCB</h3>
        <p>Add up to five sensors with simple push-on type connectors. You just need to crimp them</p>
      </div>
    </div>
  </div>
  <div class="col-sm-6 col-md-4">
    <div class="thumbnail"><commit_msg>updating docs with info on ordering the add-on board<commit_after>---
layout: docs
title: Add-on Board
---

# Add-on Board

Soldering the resistor to between the power and data lines of the sensor cable can be a bit tricky. Especially if you want to connect more than one sensor to your Pi (as you'd solder the resistor to two power and two data lines!).

To make things easier, I designed a (very) simple board. It lets you connect up to five sensors, all you need to do is crimp the sensor cables with the appropriate connector.

The board is available as a [Fritzing file](https://github.com/tobyweston/temperature-machine/blob/master/pizero.fzz) on the Github site. You can get PCBs manufactured pretty cheaply online, I recommend [JCL PCB](https://jlcpcb.com/). 

<mark>Failing that, [HenrysCat](https://github.com/HenrysCat) has kindly made the boards available on his [storefront](https://coolstuff.fws.store/Temperature_Machine_add-on_board/p7655610_20870085.aspx) for purchase. This storefront isn't associated with temperature-machine but head over to [Gitter](https://gitter.im/temperature-machine/Lobby#) to talk to [HenrysCat](https://github.com/HenrysCat) direct.
</mark>

<div class="row">
  <div class="col-sm-6 col-md-4">
    <div class="thumbnail">
    <a href="../img/temperature-machine-add-on-1.png">
      <img src="../img/temperature-machine-add-on-1.png" alt="The raw board">
      </a>
      <div class="caption">
        <h3>Basic PCB</h3>
        <p>Add up to five sensors with simple push-on type connectors. You just need to crimp them</p>
      </div>
    </div>
  </div>
  <div class="col-sm-6 col-md-4">
    <div class="thumbnail">
{'fraction_non_alphanumeric': 0.12212389380530973, 'fraction_numerical': 0.010973451327433627, 'mean_word_length': 3.536115569823435, 'pattern_counts': {'":': 0, '<': 41, '<?xml version=': 0, '>': 41, 'https://': 6, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '115866', 'n_tokens_mistral': 911, 'n_tokens_neox': 862, 'n_words': 339}