Sakura Desk Lamp
A Desk Lamp
Project Name
A multifunctional lamp
Author: Bumbacea Ioana Sarah
GitHub Project Link: https://github.com/UPB-PMRust-Students/fils-project-2026-sarahioana05-ship-it
Description
This project consists of a smart decorative lamp built using using a recycled aluminum can, with RGB LEDs placed inside to create lighting effects. The base of the lamp is inspired by a cherry blossom tree design.
Motivation
The idea for this project started from the desire to create a unique and visually appealing desk decoration using everyday materials. I also wanted the project to be more than just decorative, so I added features such as lighting effects, a timer, and a display, making it useful as a study lamp.
Architecture
The system is structured into several main functional components that interact with each other to provide the final behavior.
+----------------------+
| Input Module |
|----------------------|
| - Potentiometers |
| - Touch Sensor |
| - Button |
+----------+-----------+
|
v
+----------------------+
| Control Logic |
|----------------------|
| - Mode Selection |
| - Timer Management |
| - State Handling |
+----+-----------+-----+
| |
+-----------+ +-----------+
v v
+----------------------+ +----------------------+
| LED Control | | Display & Alerts |
|----------------------| |----------------------|
| - RGB PWM Control | | - LCD Update |
| - Effects (rainbow, | | - Show time/date |
| blinking, etc.) | | - Buzzer control |
+----------------------+ +----------------------+
Log
Week 6 - 12 May
draw the schematic and planned how to create the lamp support and other decorative elements
Week 13 - 19 May
tested some of the components
Week 20 - 26 May
github assignment and started building the model
Week 27 - 3 April
continued working on the model and finished setting half of the components
Week 4 - 10 May
started soldering components
Week 11 - 17 May
hardware soldered and assembled and tested
Week 18 - 28 May
finished software and model design
Hardware
The project is built around an STM32 microcontroller and includes multiple input and output components to create an interactive lighting system. The power supply is based on two 18650 Li-ion batteries, connected through a boost converter to provide 12V for the LEDs and a step-down regulator to supply 5V to the microcontroller and other components. STM32 Nucleo board – main controller RGB LEDs – main light source MOSFET transistors (IRF1405) – used to control LED channels!! Potentiometers (x4) – color and brightness control Capacitive touch sensor (TTP223) – mode switching LCD display – system feedback (brightness, time, etc.) Buzzer – timer alerts DC motor – interactive energy generation element Boost converter (XL6009) – steps voltage up to 12V Step-down converter (LM2596) – regulates voltage to 5V 18650 batteries + holder + charger – portable power supply CR2032 battery suport for powering rtc on stm
Schematics
Bill of Materials
| Device | Usage | Price |
|--------|--------|-------|
| [STM32_Nucleo-U545RE] | The microcontroller | [125RON](https://ro.mouser.com/ProductDetail/511-NUCLEO-U545RE-Q) |
| [LCD_de_1.44''_pentru_STC,_STM32_și_Arduino_(5V)] | the lcd screen | [34,99RON](https://www.optimusdigital.ro/ro/optoelectronice-lcd-uri/8589-lcd-de-144-pentru-stc-stm32-i-arduino-5-v.html) |
| [Rezistor_Variabil_10k_WH148] | The potentiometers | [2,39*4 RON](https://www.optimusdigital.ro/ro/componente-electronice-potentiometre/12360-rezistor-variabil-10k-wh148-poteniometru-fara-aiba-i-piulia.html) |
| [Buton_6x6x6] | five buttons | [1,80*2 RON](https://www.optimusdigital.ro/ro/butoane-i-comutatoare/1119-buton-6x6x6.html) |
| [Modul_DC-DC_Boost_XL6009] | voltage booster to 12V | [9,99 RON](https://www.optimusdigital.ro/ro/surse-ridicatoare-reglabile/160-modul-dc-dc-boost-xl6009.html) |
| [Tranzistor_Mosfet_IRF1405_(Canal_N,_200W,_55V)] | three mosfets for the leds | [29,97 RON](https://www.optimusdigital.ro/ro/componente-electronice-tranzistoare/11856-tranzistor-mosfet-irf1405-canal-n-200w-55v.html) |
| [Suport_de_Baterii_2_x_18650] | Battery support | [3,99 RON](https://www.optimusdigital.ro/ro/suporturi-de-baterii/941-suport-de-baterii-2-x-18650.html) |
| [Modul_cu_Senzor_Capacitiv_TTP223] | touch sensor | [2,97 RON](https://www.optimusdigital.ro/ro/senzori-senzori-de-atingere/861-modul-cu-senzor-capacitiv-ttp223.html) |
| [Baterie_Reincarcabila_18650_ISR_Li-Ion_3.6V_2600mAh] | power supply | [38,96 RON](https://www.emag.ro/baterie-reincarcabila-18650-isr-li-ion-3-6v-2600mah-2-6a-cu-descarcare-maxima-7-65a-ted-electric-a0116012-01/pd/DYFNB73BM/) |
| [Modul_DC-DC_Step_Down_LM2596] | the voltage regulator for 5V | [9,46 RON](https://www.emag.ro/modul-dc-dc-step-down-lm2596-765464701237/pd/DWHHRGBBM/?utm_source=mobile%20app&utm_medium=ios&utm_campaign=share%20product) |
| [Intrerupator_Negru_On/Off] | Button for the power supply | [1,98 RON](https://www.optimusdigital.ro/ro/butoane-i-comutatoare/7434-buton-negru-onoff.html?search_query=Intrerupator+Negru+On%2FOff&results=1) |
| [Buzzer_Pasiv_de_3.3V_sau_3V] | buzzer for the alarm | [1,98 RON](https://www.optimusdigital.ro/ro/audio-buzzere/12247-buzzer-pasiv-de-33v-sau-3v.html?search_query=Buzzer+Pasiv+de+3.3V+sau+3V&results=1) |
| [Breadboard_90_x_52_x_8.5_mm] | two breadboards | [11,98*2 RON](https://www.optimusdigital.ro/ro/prototipare-breadboard-uri/13247-breadboard-90-x-52-x-85-mm.html?search_query=Breadboard+90+x+52+x+8.5+mm&results=91) |
| [Set_de_LED-uri_Asortate_de_5_mm_si_3_mm_(310_buc)_cu_Rezistoare_Bonus] | LEDs and resistors | [26,99 RON](https://www.optimusdigital.ro/ro/kituri-optimus-digital/9517-set-de-led-uri-asortate-de-5-mm-si-3-mm-310-buc-cu-rezistoare-bonus.html?search_query=Set+de+LED-uri+Asortate+de+5+mm+si+3+mm+%28310+buc%29+cu+Rezistoare+Bonus&results=1) |
| [Capac Colorat pentru Potențiometru Negru cu Roșu] | cover for the potentiometers | [0,99*4 RON](https://www.optimusdigital.ro/ro/cautare?controller=search&orderby=position&orderway=desc&search_query=Capac+Colorat+pentru+Potențiometru+Negru+cu+Roșu&submit_search=) |
| [Buton cu Capac Rotund Alb] | button with cover | [1,99 RON](https://www.optimusdigital.ro/ro/butoane-i-comutatoare/1115-buton-cu-capac-rotund-alb.html?search_query=Buton+cu+Capac+Rotund+Alb&results=3) |
| [Suport pentru Baterie CR2032 cu 3 Pini] | battery suport | [0,89 RON](https://www.optimusdigital.ro/ro/suporturi-de-baterii/13045-suport-pentru-baterie-cr2032-cu-3-pini.html?search_query=Suport+pentru+Baterie+CR2032+cu+3+Pini&results=1) |
| [Mini Breadboard Negru] | mini breadboard | [2,36*4 RON](https://www.optimusdigital.ro/ro/prototipare-breadboard-uri/246-mini-breadboard-colorat.html?search_query=Mini+Breadboard+Negru&results=7) |
| [Set de fire cu izolație PVC (22AWG, 6 culori, 10m fiecare)] | wires for soldering | [44,99 RON](https://www.optimusdigital.ro/ro/kituri/12264-set-de-fire-cu-izolaie-pvc-22awg-6-culori-10m-fiecare-0721248989765.html?search_query=Set+de+fire+cu+izolație+PVC+%2822AWG%2C+6+culori%2C+10m+fiecare%29&results=1) |
| [Diodă 1N4148-NXP] | diode for controling current of the cr2032 battery | [0,49 RON](https://www.optimusdigital.ro/ro/componente-electronice-diode/7456-dioda-1n4148-nxp.html?search_query=%09Dioda+1N4148-NXP&results=1) |
| [IRLZ44NPBF TRANZISTOR CANAL N MOSFET UNIPOLAR] | mosfet for the led strip | [9,50*3 RON](https://electroniclight.ro/irlz44npbf-tranzistor-canal-n-mosfet-unipolar-hexfet-55v-41a-83w/7586.htm) |
| [ZD-200N LETCON 50W REZISTENTA CERAMICA] | soldering gun - replaced the previous one i had that broke | [59 RON](https://electroniclight.ro/zd-200n-letcon-50w-rezistenta-ceramica/8817.htm) |
| [Set_Fire_pentru_Breadboard] | wires for components | [7,99 RON](cannot find the link anymore) |
| [TOTAL] | . | [446,3 RON]|()
Software
| Library | Description | Usage |
|---------|-------------|-------|
| [embassy-stm32](https://github.com/embassy-rs/embassy) |Async HAL for STM32 microcontrollers | Main framework for handling tasks, timers, and peripherals |
| [embassy-time](https://github.com/embassy-rs/embassy) | Time handling for async systems | Used for delays, timers, and scheduling (lamp timer) |
| [embedded-graphics](https://github.com/embedded-graphics/embedded-graphics) | 2D graphics library | Used to draw text and UI on the LCD display |
| [embedded-hal](https://github.com/rust-embedded/embedded-hal) | Hardware abstraction layer | Used for general GPIO, ADC, and PWM control |
| [emabssy-executor](https://github.com/embassy-rs/embassy/tree/main/embassy-executor) | Async task executor for embedded systems | Used for running async tasks and timers |
| [heapless](https://github.com/rust-embedded/heapless) | Fixed-capacity data structures without dynamic memory allocation | Used for strings and memory-safe embedded data handling |
| [core](https://doc.rust-lang.org/core) | Minimal Rust standard library for no_std environments | Used for formatting, traits, and low-level functionality |