This is a simple temperature controller based on an Arduino that is intended to be used with an improvised dry heat disinfection unit that operates at 60 to 100 C. The disinfection unit uses a small metal bucket and lid as the disinfection chamber and incandescent light bulbs as the heating elements which should be available at hardware stores. The unit is designed to be readily constructible for use in a crisis or pandemic situation where dry heat disinfection is applied to personal protective equipment (PPE).
It is intentionally simple, requiring the minimum specialized parts, so it can be built with parts that are on-hand or readily available. The main specialized parts are an Arduino Nano or Arduino Uno and a LM35 temperature sensing IC. The user interface is four LEDs and three push buttons. A PCB layout is available for a version that uses the Arduino Nano V3. The PCB is one-sided an a stencil is provided for etching a circuit board. Because the disinfection unit uses mains power, precautions should be taken to prevent electric shock.
Directories:
- code: Arduino project
- doc: Documents describing how to construct and use the improvised dry heat disinfection unit.
- SimpleTempController: KiCad PCB layout.
The PCB was created by Daniel Marks and is available under the Creative Commons CC-BY-SA 4.0 licenses, and the software was also created by Daniel Marks and is available under the zlib license. THE HARDWARE AND SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE HARDWARE AND SOFTWARE OR THE USE OR OTHER DEALINGS IN THE HARDWARE AND SOFTWARE.
For any questions, please contact Daniel Marks, profdc9@gmail.com