projects:electronics:ikea_hacks:206.204.62_kortlinje
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| — | projects:electronics:ikea_hacks:206.204.62_kortlinje [2026/09/09 18:01] (current) – created Andrew Yong | ||
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| + | ====== 206.204.62 KORTLINJE ====== | ||
| + | < | ||
| + | |||
| + | ===== Disassembly ===== | ||
| + | |||
| + | - Battery cover | ||
| + | - Loosen 2× M2×7 captive screws | ||
| + | - Remove the part | ||
| + | - Battery holder and rear button plate | ||
| + | - Remove 5× ST1.7×6 screws | ||
| + | - Lift up the part | ||
| + | - Insert a long screwdriver e.g. a test pen to push on one of the retaining tabs on the rear plate | ||
| + | - Pull upwards on the corner to free it (do not pull too hard to avoid breaking the other tab that is still engaged) | ||
| + | - Push on the remaining retaining tab while pulling upwards to free it too (be careful not to re-latch the other tab) | ||
| + | - Remove the part | ||
| + | - Power board | ||
| + | - Remove 4× ST1.7×6 screws | ||
| + | - Lift up the part and flip it over to the bottom side of the board to free it | ||
| + | - The part cannot be removed fully as the wires are soldered on both ends | ||
| + | - Mid-frame | ||
| + | - De-route the power cord from the cord grip | ||
| + | - Remove 6× ST1.7×6 screws | ||
| + | - Remove the part | ||
| + | - Main board | ||
| + | - Remove 8× ST1.7×6 screws | ||
| + | - Lift up the part and free it | ||
| + | - The part cannot be removed fully as various wires are soldered on both ends | ||
| + | |||
| + | ===== Main Components ===== | ||
| + | |||
| + | * U6 is an unmarked IC (SOIC-16N package) and likely an 8-bit MCU running the show | ||
| + | * Pin 3 ↔ VPP testpoint | ||
| + | * Pin 4 ↔ CLK testpoint | ||
| + | * Pin 7 ↔ GND | ||
| + | * Pin 11 ↔ SDA | ||
| + | * Pin 12 ↔ SCK | ||
| + | * Pin 14 ↔ Buzzer | ||
| + | * U1, U2, U4 are VINKA VK1640 (SOP28 package) LED drivers | ||
| + | * U3 is an unmarked IC (TSSOP-24) and likely an RTC | ||
| + | * Pin 2 ↔ GND | ||
| + | * Pin 14 ↔ CK testpoint | ||
| + | * Pin 15 ↔ 32.768 kHz crystal | ||
| + | * Pin 16 ↔ 32.768 kHz crystal | ||
| + | * Pin 23 ↔ V | ||
| + | * Photodiode for automatic brightness | ||
| + | * Sensors in the clock leg with a vent | ||
| + | * Analog humidity sensor | ||
| + | * Analog thermistor | ||
| + | * Buzzer on this external sensor PCB | ||
projects/electronics/ikea_hacks/206.204.62_kortlinje.txt · Last modified: by Andrew Yong
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