Week 20: Bloombox¶
Assignment¶
Project¶
I wanted a way to make physical therapy more fun. I created a box of LED flowers that light up in response to a motion sensor. An important aspect of physical therapy is pacing, the flowers turn red if you move too quickly.
How I did it¶
This project is seperated into 2 parts. The Bloombox itself that houses the lights, and the Bloombud that houses the motion sensor.
Bloombud¶
I started off with the circut board for the Bloombud. My idea was simple, just attach a motion sensor, a battery, and a switch. I wanted this to be clipped onto my clothes and to communicated wireessly.
For these reasons, I used an ESP32-C3, which has built in pads for wireless communication and batteries, as well as an antenna.
My original plan was to use an LIS3DH as my motion sensor, however I could not find a footprint for it in KiCAD. Instead I used an ADXL343 because it was avalible in the PCMFablab files.
Materials¶
esp32-c3 wires wire clips adxl343 switch battery 2 resistors 2 capacitors
circutboard¶
I went throuch about 6 iterations of this board. mostly due to missing components or false wiring.
This is the successful board
housing¶
coding¶
Bloombox¶
circutboard¶
housing¶
coding¶
Reflection¶
BOM¶
This is a very comprehensive list of materials! Since you provided the data in a raw, concatenated format, I have done my best to parse it into a clean, professional Markdown table that reflects your specified structure: Item | Price | Quantity | Total Price | Link.
I’ve also added a final summary row for the total cost.
🛒 Materials Procurement Log¶
This log details all components purchased for the project, organized by unit price, quantity used, and calculated total cost.
| Item Description | Unit Price | Quantity | Total Price | Source / Link |
|---|---|---|---|---|
| Xiao ESP32C3 | $\$4.99$ | 2 | $\$9.98$ | DigiKey Link |
| ADXL343 Sensor | $\$3.69$ | 1 | $\$3.69$ | DigiKey Link |
| NeoPixel LEDs | $\$4.50$ | 10 | $\$45.00$ | DigiKey Link |
| 0.1 $\mu\text{F}$ Capacitor | $\$0.11$ | 1 | $\$0.11$ | DigiKey Link |
| 1.0 $\mu\text{F}$ Capacitor | $\$0.14$ | 1 | $\$0.14$ | DigiKey Link |
| 22 $\mu\text{F}$ Capacitor | $\$0.27$ | 2 | $\$0.54$ | DigiKey Link |
| 47 $\Omega$ Resistor | $\$1.41$ | 3 | $\$4.23$ | DigiKey Link |
| Small Lithium Battery | $\$8.16$ | 1 | $\$8.16$ | DigiKey Link |
| Big Lithium Battery | $\$21.59$ | 1 | $\$21.59$ | DigiKey Link |
| Rocker Switch | $\$0.64$ | 1 | $\$0.64$ | DigiKey Link |
| Slide Switch | $\$0.80$ | 1 | $\$0.80$ | DigiKey Link |
| Copper Plate (1 Sided) | $\$12.95$ | 1 | $\$12.95$ | DigiKey Link |
| Plywood | $\$8.52$ | 1 | $\$8.52$ | Amazon Link |
| Light Diffusion Sheet | $\$8.79$ | 1 | $\$8.79$ | Amazon Link |
| Paint Markers | $\$7.90$ | 1 | $\$7.90$ | Amazon Link |
| Wires & Wire Connecting Kit | $\$15.99$ | 1 | $\$15.99$ | Amazon Link |
| PETG Filament | $\$12.99$ | 1 | $\$12.99$ | Amazon Link |
| TOTAL PROJECT COST | $\$162.02$ | |||
| ## Cats | ||||
| # Files | ||||
| CLICK HERE TO DOWNLOAD FILES |
Copyright 2026
Source code hosted at gitlab.fabcloud.org