Thingiverse

Postbox notification

von jwillmer

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This is a hardware containment for a 443 MHz radio notification device. The hardware will send a code over 433 MHz as soon as it is powered on. There are two cables running out of the case that need to be connected in order to turn on the device. I am using a reed switch together with a magnet on my postbox that will connect the cables as soon as the magnet moves away (open postbox).

#### Notification examples

- Postbox notification (as described)
- Door/window sensor (with a reed switch).
- Smart button (notification when the button was pressed)
- When the wardrobe was opened (with a normally closed switch)

#### Additional resources

- A detailed project description can be found on my blog: [New letter in postbox notification with Arduino and ATtiny85](https://jwillmer.de/blog/tutorial/new-letter-in-postbox-notification-with-arduino-and-attiny85)
- The model can be found/copied and modified at [Onshape Postbox Model](https://cad.onshape.com/documents/04cc9ffde790c244

433mhz Alert arduino arduino case attiny85 home automation iot letterbox mailbox notification radio smarthome 433mhz Alert arduino arduino case attiny85 home automation iot letterbox mailbox notification radio smarthome

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FDM / FFF

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