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besna_shnita
2025-09-17 10:44:31 +00:00
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@@ -45,19 +45,21 @@ show notifications, display the weather, monitor stuff, show a clock, serve a we
## Bill of Materials ## Bill of Materials
| **Component** | **Quantity** | **Description** | **Notes** | | **Component** | **Quantity** | **Description** | **Notes** |
|---------------------------|--------------|-------------------------------------------|---------------------------------------------| |---------------------------|--------------|-------------------------------------------|---------------------------------------------|
| ESP8266 D1 Mini | 1 | Microcontroller module | | | Enclosure | 1 | 3D-printed case | 3D printable STL files are in `hardware/case/` |
| SSD1306 OLED Display | 1 | 128x64 resolution, I2C interface | | | ESP8266 D1 Mini | 1 | Microcontroller module | |
| 14250 Rechargeable Battery| 1 | Lithium-ion battery | Make sure you get the rechargeable type, most 14250 are not | | SSD1306 OLED Display | 1 | 128x64 resolution, I2C interface | |
| TP4056 Module | 1 | Charging and protection circuit | Does not need to have a USB connector | | 6x6 Push Buttons | 3 or 4 | Tactile push buttons | |
| 6x6 Push Buttons | 3 or 4 | Tactile push buttons | | | 20mm Piezo Buzzer | 1 | Caseless buzzer for audio | |
| 20mm Piezo Buzzer | 1 | Caseless buzzer for audio | | | Resistors (10kΩ) | 3 or 4 | Pull-down resistors for buttons | Generally any resistor between 1kΩ and 100kΩ will work |
| Resistors (10kΩ) | 3 or 4 | Pull-down resistors for buttons | |
| Resistors (220kΩ and 56kΩ)| 1 | Voltage divider | For monitoring the battery charge level |
| Wires | Several | Thin wires for connections | I used wires from inside an old ethernet cable | | Wires | Several | Thin wires for connections | I used wires from inside an old ethernet cable |
| Enclosure | 1 | 3D-printed case | 3D printable STL files are in `hardware/case/` |
| 2x6mm screw | 8 | Small screws for assembling the case | Does not have to be exactly 6mm long | | 2x6mm screw | 8 | Small screws for assembling the case | Does not have to be exactly 6mm long |
| 2x2mm screw | 4 | Small screws for the front | Mostly for cosmetic purposes | | 2x2mm screw | 4 (Optional) | Small screws for the front | Mostly for cosmetic purposes |
| 14250 Rechargeable Battery| 1 (Optional) | Lithium-ion battery | Make sure it's rechargeable; most 14250 aren't |
| TP4056 Module | 1 (Optional) | Charging and protection circuit | USB connector not required |
| Resistors (220kΩ and 56kΩ)| 1 (Optional) | Voltage divider | For monitoring the battery charge level |
| Micro Slider Switch (SS-12D00) | 1 (Optional) | On/Off switch | Only needed if installing the battery |
![layout](https://git.kopic.hr/tomislav/SmartCubeV1/raw/branch/main/hardware/pictures/layout.jpg) ![layout](https://git.kopic.hr/tomislav/SmartCubeV1/raw/branch/main/hardware/pictures/layout.jpg)
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@@ -150,7 +152,7 @@ The battery is optional. Your SmartCube will work fine when powered via USB; how
A single 700 mAh 14250 battery lasts about 24 hours. A single 700 mAh 14250 battery lasts about 24 hours.
The TP4056 prevents the cell from being completely drained and should protect it from damage. The TP4056 prevents the cell from being completely drained and should protect it from damage.
Altough it's not included in any of the the pictures or schematics, both the case and the back cover are updated to include a slot for a micro slider switch (SPDT), in case you actually want to have a power switch instead of letting it run untill the battery drains. Although it's not shown in any of the pictures or schematics, both the case and the back cover are updated to include a slot for 8.5mm SPDT slider switch(SS-12D00), in case you actually want to have a power switch instead of letting it run until the battery drains.
* Solder the 14250 battery to the **TP4056 input pins**. * Solder the 14250 battery to the **TP4056 input pins**.
* Wire the **TP4056 output** to the **3.3V pin** on the D1 Mini to power the device. * Wire the **TP4056 output** to the **3.3V pin** on the D1 Mini to power the device.