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| [title] Studying the PCB components | |
| [* black] The following components were identified on the PCB: | |
| [* red] [link|https://www.ic-components.com/products/7e5716036/FL128PIF.pdf|Spansion FL128PIF|new_window=true] (Flash memory) | |
| [* orange] [link|https://www.microchip.com/en-us/product/PIC18F2520|Microchip 18LF2520|new_window=true] (MCU) | |
| [* yellow] [link|https://www.analog.com/en/products/adxl345.html#product-overview|Analog Devices ADXL345|new_window=true] (MEMS Accelerometer) | |
| [* green] [link|https://www.ftdichip.com/old2020/Products/ICs/FT232R.htm|FTDI FT232R|new_window=true] (USB UART IC) | |
| [* light_blue] L28B (Voltage regulator IC) Either [link|https://www.ti.com/product/LP2980-N/part-details/LP2980IM5-3.3/NOPB?keyMatch=LP2980IM5|Texas Instruments|new_window=true] or [link|https://www.diodes.com/part/view/ZXCL280E5|Diodes Inc.|new_window=true] | |
| - | [* blue] [link|https:// |
| - | [* violet] [link|https://www. |
| + | [* blue] [link|https://components101.com/ics/max1555-dual-input-single-cell-lithium-ion-battery-charger|ADRU|new_window=true] (Battery charging IC) |
| + | [* violet] [link|https://www.hotenda.com/marking-code/search/part/SMBG33.html|ML|new_window=true] (Hall effect sensor for magnetic pull detection) |