🧪 nrf52833 BBC micro:bit
Experiments, Prototypes & Notes with the micro:bit v2.21
This repository contains my projects, experiments, and notes using the micro:bit v2.21, built on the nrf52833 microcontroller.
It serves as a playground for testing ideas, learning embedded concepts, and building small prototypes.
Goals:
- Explore nrf52833 features with
microbit::hal - Interface with peripherals (GPIO, I2C, SPI, UART, ADC, PWM)
- Experiment with power management, timers, interrupts
- Integrate with sensors and modules (temperature, motion, light, etc.)
⚙️ Hardware Used
- micro:bit v2.21
- Breadboard & jumper wires
- Sensors: DHT11, MPU6050, BH1750, HW-416A, HC-SR04, HW-504, etc
- Power: USB / battery / external supply
🧩 Projects & Experiments
| Project Name | Description | Status |
|---|---|---|
blinky | blink onboard led | ✅ Done |
led_circle | onboard led matrix circle controlled by bsc | ✅ Done |
uart_echo | connect MCu to PC through UART from BSC | ✅ Done |
xxx | planned | ⏳ Planned |
More to come.
🔧 Tools & Tech Stack
- Languages: Rust
- IDEs: VSCode
- Libraries:
microbit::bsc,microbit::hal,panic_rtt_target,cortex_m_rt - Protocols: GPIO, MQTT, UDP, TCP
- Flash storage & OTA update experiments (planned)
📎 Notes
This is an open lab space – not a polished library or framework. Things may be messy, experimental, or half-finished. If you’re tinkering with the micro:bit too, feel free to fork, comment, or share ideas.
📺 Demos
led-matrix :
section size addr
.vector_table 256 0x0
.text 6812 0x100
.rodata 856 0x1b9c
.data 0 0x20000000
.gnu.sgstubs 0 0x1f00
.bss 1092 0x20000000
.uninit 0 0x20000444
.debug_loc 14715 0x0
.debug_abbrev 3137 0x0
.debug_info 69578 0x0
.debug_aranges 648 0x0
.debug_ranges 12304 0x0
.debug_str 76193 0x0
.comment 153 0x0
.ARM.attributes 56 0x0
.debug_frame 1260 0x0
.debug_line 21193 0x0
Total 208253