Alarm That Sends E-mail Notification Over Wi-Fi

Pressing the button causes LED lights to flash in a rainbow pattern and sends emails notifying recipients that the button was pressed.

Supplies

• 32”x20” ⅛” pink acrylic
• Super glue
• 2 male to male wires
• 2 female to female wires
• Raspberry Pi Pico W
• Pico W breadboard
• 30 light LED strip with power, ground, signal wires
• 12mm square tactile button
• Slim external battery
• USB A to microUSB

Step 1: Steps

• Physical
• 3d print button (PLA)
• File: phys_comp_wifi_alarm/bathroom alarm button.stl at main · WebsiteDisplayName/phys_comp_wifi_alarm (github.com)
• It will be necessary to add structure/supports
• Prusa Mini
• Signal should be GP15
• Laser cut box (⅛” pink acrylic)
• File: phys_comp_wifi_alarm/finalHingeBox.svg at main · WebsiteDisplayName/phys_comp_wifi_alarm (github.com)
• Trotec laser cutter
• Super glue box together
• Wire strip 30 light LED (3x wires)
• Signal should be GP14
• Super glue LED strip to top of box
• Place tactile button into hole of acrylic box and super glue into place
• For 2 adjacent legs of tactile button (not on opposite ends):
• Connect to leg with female wire
• Attach other end of female wire with male to male wire
• Attach other end of male to male wire to breadboard
• Have 1 of the wires go to GP14
• Electronic
• Setting up Pico W and settings.toml
• Overview | Quick-Start the Pico W WiFi with CircuitPython | Adafruit Learning System
• Will need to set WIFI_SSID and WIFI_PASSWORD to name and password of your network
• API provider
• Mailjet: Email Delivery Service for Marketing & Developer Teams | Mailjet
• 6000 emails/month, 200 emails/day
• Create an account
• Record Public and Private Keys
• Use key_conv.py to generate combined key to put into header of main program to authenticate
• Paste result into “COMB_KEY” key value in settings.toml
• Curl converter to change message body, recipient, etc
• Go here Send API V3 (mailjet.com)
• Copy the relevant Curl text
• Paste into Convert curl commands to code (curlconverter.com)
• Copy paste output into program and adjust as necessary
• NOTE: only necessary if making custom API request, not needed if copy pasting given code
• Requests Authentication
• File: phys_comp_wifi_alarm/key_conv.py at main · WebsiteDisplayName/phys_comp_wifi_alarm (github.com)
• Replace Public and Private key variable values with those found at Mailjet
• Run the program and copy paste the printed output into COMB_KEY variable in settings.toml
• Main program
• File: phys_comp_wifi_alarm/wifi_alarm.py at main · WebsiteDisplayName/phys_comp_wifi_alarm (github.com)
• Libraries: phys_comp_wifi_alarm/lib at main · WebsiteDisplayName/phys_comp_wifi_alarm (github.com)
• Replace timezone with your respective timezone
• Replace the “From” email in the post_request function with your intended sender email (as set in Mailjet)
• The recipient emails should be typed 1 email per line in the “target_emails.txt” file
• Usage
• Connect the Pico W to an external power source and press the button for the LED strip to light up and to send email(s)