Project technologies

Explore the engineering.

Browse the interfaces, platforms and methods documented across 97 engineering records. Start with a communication technology, or explore the complete index by engineering area.

Records can appear in more than one technology group. The complete index below lists each record once, with its documented development stage and original technical labels.

12 documented records

I2C

Peripheral interfaces, controller-to-controller links, sensor acquisition and LED control. These records describe where I2C fits into each design or firmware task.

Environmental alarm and LCD controllerFirmware developmentI2C
Embedded audio playback controllerFirmware developmentI2C
IMU breathing motion analyserDevelopment workI2C
OLED cable test instrumentDevelopment workI2C
Relay sequencing controllerFirmware developmentI2C
ESP32 to Teensy LED bridgeFirmware moduleI2C
ESP32 and FRDM I2C interface pairFirmware moduleI2C
Digital compass interface libraryFirmware moduleI2C
AbuLou SmartLED firmwareFirmware and prototype workI2C
BLE load cell and compass prototypePrototype developmentI2C
PCA9685 multi channel servo interfaceFirmware moduleI2C
Blood oxygen sensor acquisition firmwareSensor firmwareI2C

5 documented records

CAN bus

CAN communication in controller interfaces, keypad and relay boards, diagnostics and lighting nodes. Board design and firmware-module work retain their own development stages.

Dual board hydrogen controller interfaceDevelopment workCAN
CAN keypad and relay controller PCBsPCB and firmware developmentCAN
Triple channel CAN diagnostic interfaceDevelopment workCAN
CAN controlled LED and output nodeFirmware moduleCAN
CAN addressable LED controllerFirmware moduleCAN

7 documented records

Bluetooth and BLE

Wireless input, sensing and control records. Bluetooth and Bluetooth Low Energy (BLE) are identified separately for each entry.

Text to Braille and speech controllerDevelopment workBluetooth (serial module)
Encoder based BLE motor controllerFirmware developmentBLE
Bluetooth environmental sensor linkDevelopment workBluetooth
ESP32 Bluetooth keyboard controllerFirmware developmentBluetooth, BLE
BLE load cell and compass prototypePrototype developmentBLE
BLE relay control firmwareFirmware moduleBLE
ESP32 BLE game controller interfaceFirmware developmentBLE

10 documented records

Wi-Fi

Networked device interfaces, serial transport, camera servers and cloud-connected controls. Follow each record for the documented implementation and its limits.

ESP32-C3 lap timer and servo gatePrototype developmentWi-Fi
ESP32 animated photo booth displayFirmware developmentWi-Fi
ESP32 Modbus and RS485 data loggerDevelopment workWi-Fi
ESP32 camera and calculator image interfaceDevelopment workWi-Fi
Cloud connected pump and reagent controllerDevelopment workWi-Fi
MQTT IMU and cellular telemetry nodeDevelopment workWi-Fi
Wi-Fi serial transport firmwareFirmware moduleWi-Fi
ESP32 camera web serverFirmware developmentWi-Fi
Cellular and Wi-Fi MQTT gatewayFirmware developmentWi-Fi
Environmental OLED and cloud loggerDevelopment workWi-Fi

5 documented records

MQTT and WebSocket

Telemetry, logging and remote-control interfaces. The labels below distinguish MQTT messaging from WebSocket communication.

ESP32 Modbus and RS485 data loggerDevelopment workWebSocket
GNSS and LoRa race trackerSystem developmentWebSocket
MQTT IMU and cellular telemetry nodeDevelopment workMQTT
Cellular and Wi-Fi MQTT gatewayFirmware developmentMQTT
Remote claw machine controlControl integration / camera work ongoingMQTT, WebSocket

9 documented records

SPI, UART, RS-485 and Modbus

Peripheral and serial links for displays, motion control and instruments. Each entry lists the particular interfaces documented in that record.

Embedded audio playback controllerFirmware developmentSPI, UART
LVGL display configuration packageSoftware configurationSPI
IMU breathing motion analyserDevelopment workUART
Encoder referenced stepper controllerFirmware developmentUART
Text to Braille and speech controllerDevelopment workSPI, UART
OLED cable test instrumentDevelopment workUART
ESP32 Modbus and RS485 data loggerDevelopment workRS-485, Modbus
Capacitive MIDI sensor interfaceFirmware developmentUART
Wi-Fi serial transport firmwareFirmware moduleUART

The complete index

97 records. Six engineering areas.

Open an area to find every record and its technical labels. The archive includes board designs, firmware modules, prototypes and studies; the development stage is shown beside each title.

Lighting and interaction (11)

Interactive tic tac toe LED controllerFirmware development
WS2812, Embedded C++, Game logic, Input debouncing
ESP32 animated photo booth displayFirmware development
ESP32, Display control, Animation
Lighting controller PCB layout conceptPCB layout concept
Lighting patterns, Visual prototyping
Keypad display and relay game controllerFirmware development
Keypad, Display, Relay control, Game logic
Addressable lighting visualiserVisual prototype
Addressable LEDs, Lighting visualisation
Memory pattern LED game controllerFirmware development
LED control, Game logic, Input sequencing
NeoPixel simulation and control sketchSimulation and firmware
NeoPixel, LED control, Simulation
AbuLou SmartLED firmwareFirmware and prototype work
ATtiny85, I2C, RGB and HSV, EEPROM, Motor patterns, Nonblocking timing
WS2812 animation controllerFirmware development
WS2812, LED animation, Embedded firmware
EEPROM scripted LED controllerFirmware development
EEPROM, Addressable LEDs, Animation control
Large format Bingo displayFirmware and hardware integration
ESP32, WS2812, 10,000+ pixels, Wireless updates, Matrix mapping

Firmware and control (33)

Arduino Nano MIDI control interfaceFirmware development
Arduino Nano, MIDI, Physical controls
Embedded audio playback controllerFirmware development
Teensy, I2C, SPI, SD storage
LVGL display configuration packageSoftware configuration
LVGL, Embedded display
Configurable stepper motion scriptFirmware development
Stepper control, Motion timing
MIDI joystick and fader bankFirmware development
MIDI, Analog controls, Signal filtering
Motorised FM radio sweep controllerFirmware development
Motor control, FM radio, Input handling
Fingerprint and keypad access controllerFirmware development
Fingerprint interface, Keypad, Access logic
Encoder referenced stepper controllerFirmware development
Stepper control, Encoder input
RTC timed motor and servo controllerFirmware development
RTC, Motor control, Servo control, DS1302, Three-wire interface
Fingerprint enrolment and verification firmwareFirmware development
Fingerprint interface, Enrolment, Verification logic
Text to Braille and speech controllerDevelopment work
Braille interface, Speech output, Peripheral control, Bluetooth, UART, SPI
Wearable motion firmwareFirmware development
Motion input, Low power firmware, Lighting control
Encoder based BLE motor controllerFirmware development
BLE, Encoder input, Motor control
Relay sequencing controllerFirmware development
Relay control, Sequencing, Embedded firmware
ESP32 audio and motor controllerFirmware development
ESP32, Audio control, Motor control
Themed prop smoke motor and LED controllerFirmware development
Motor control, LED control, Output sequencing
Motion triggered light and sound propFirmware development
Motion input, Lighting, Audio control
LUFA USB descriptor packageFirmware module
LUFA, USB descriptors, Embedded C
ESP32 Bluetooth keyboard controllerFirmware development
ESP32, BLE, Keyboard interface
IMU assisted motor and servo controllerFirmware development
IMU, Motor control, Servo control
ESP-01S wireless smoke and LED controllerFirmware development
ESP-01S / ESP8266, Wireless control, LED effects, Output sequencing
Deterministic motor step sequenceFirmware module
Motor control, Sequencing, Timing
Current monitored relay and motor firmwareFirmware development
Current monitoring, Relay control, Motor control
IMU stabilised stepper platformDevelopment work
IMU, Stepper control, Feedback control
ESP32 motor and power stage controllerFirmware development
ESP32, Motor control, Power stage interface
Sequenced multi servo controllerFirmware development
Servo control, Sequencing, PIR input
Embedded control firmware moduleFirmware module
Embedded C++, State control, Hardware interfaces
Keypad based multi zone alarmFirmware development
Keypad, PIN checking, Alarm logic, Local display
PCA9685 multi channel servo interfaceFirmware module
PCA9685, Servo control, I2C
BLE relay control firmwareFirmware module
BLE, Relay control, Embedded firmware
ESP32 BLE game controller interfaceFirmware development
ESP32, BLE, Encoder input, Button timing
Accident alert greenhouse and BLDC control setFirmware collection
ESP32, Alert logic, Environmental control, BLDC control
N64 stick calibration firmwareDelivered firmware / follow-up refinement
ATtiny84A, Embedded C, Calibration, EEPROM, Logic analyser

Hardware and PCB (9)

RP2040 interface PCBPCB design
RP2040, PCB layout, Interface design
Six-layer controller PCBLimited public overview
Six-layer PCB, Six actuators, Sensors, ESP32, BMS
Four-channel Hall sensor PCBPCB design
Hall sensors, PCB layout, Sensor interfaces
DRV8833 dual motor driver circuitCircuit design
DRV8833, Motor drivers, Circuit design
CAN keypad and relay controller PCBsPCB and firmware development
ESP32 S3, CAN, Keypad matrix, Relay outputs, PCB design
Embedded circuit and schematic packageCircuit design
Schematic capture, Circuit design, Interface documentation
CNC controller wiring packageWiring documentation
CNC wiring, Motor interfaces, Limit inputs, Technical documentation
Multi-sheet embedded schematic designSchematic design
Schematic capture, Power domains, Interface definition
Compact Class-D amplifier PCBDesign and layout refinement
Class-D audio, PCB layout, Power routing, Grounding, Automotive supply

Sensing and instrumentation (12)

IMU breathing motion analyserDevelopment work
IMU, Sensor acquisition, Motion sensing
Environmental alarm and LCD controllerFirmware development
Environmental sensing, LCD, Alarm logic, I2C
OLED cable test instrumentDevelopment work
Continuity testing, OLED, Embedded control
Capacitive MIDI sensor interfaceFirmware development
Capacitive sensing, MIDI, Input processing
Digital compass interface libraryFirmware module
HMC5883L, Magnetometer, I2C, Heading data
Interrupt driven signal counterFirmware module
Interrupts, Event counting, Embedded firmware
LiDAR start and finish timing modulesFirmware development
LiDAR, Timing, Embedded interface
BLE load cell and compass prototypePrototype development
BLE, Load cell, Magnetometer, I2C
IMU and LiDAR target guidance firmwarePrototype firmware
IMU, LiDAR, Sensor fusion, Bias handling, Embedded feedback
Blood oxygen sensor acquisition firmwareSensor firmware
Sensor acquisition, I2C, ESP32
Dual load cell measurement controllerDevelopment work
Load cells, HX711, Measurement firmware
Dual channel HX711 load cell interfaceFirmware module
HX711, Load cells, Channel selection, Tare

Engineering studies (8)

Round touchscreen interface conceptInterface concept
Touchscreen, Interface design
Heated enclosure control conceptControl concept
Temperature control, Control architecture
Embedded systems technical assessmentTechnical assessment
Requirements analysis, Technical documentation
Engineering solution design documentDesign documentation
System design, Requirements, Technical documentation
Arduino hardware integration planIntegration planning
Arduino, Hardware integration, Technical documentation
Automated irrigation control architectureArchitecture study
Irrigation control, System architecture, Pumps and valves
Sensor based fan control studyDesign study
Fan control, Sensor integration, Design study
Wearable PCB and enclosure studyDesign study
Rigid flex PCB, Wearable electronics, Mechanical envelope, PCB concept

Connected systems (24)

NFC inventory interfaceFirmware module
NFC, Protocol handling, Diagnostics
NFC tag and web workflow prototypePrototype development
NFC, PN532, Web integration
ESP32-C3 lap timer and servo gatePrototype development
ESP32-C3, Wi-Fi access point, Browser interface, Servo control, Sensor inputs
ESP32 Modbus and RS485 data loggerDevelopment work
ESP32, Modbus, RS485, Wi-Fi, Data logging
ESP32 to Teensy LED bridgeFirmware module
ESP32, Teensy, LED control
Bluetooth environmental sensor linkDevelopment work
Bluetooth, Environmental sensing, Sensor data
ESP32 and FRDM I2C interface pairFirmware module
ESP32, FRDM, I2C
Pool monitoring and web diagnostics nodeDevelopment work
ESP32, Web diagnostics, Data acquisition
ESP32 camera and calculator image interfaceDevelopment work
ESP32, Camera, Image transfer, Interface integration
GNSS and LoRa race trackerSystem development
GNSS, LoRa, WebSocket, GPX logging, Browser map
Dual board hydrogen controller interfaceDevelopment work
ESP32, CAN, PWM, Board interfaces
Cloud connected pump and reagent controllerDevelopment work
Pump control, Wi-Fi, Cloud integration, Output control
MQTT IMU and cellular telemetry nodeDevelopment work
MQTT, IMU, Cellular telemetry, ESP32
Art-Net UDP lighting interfaceFirmware module
Art-Net, UDP, Lighting control
ESP32 embedded web monitor prototypePrototype development
ESP32, Embedded web interface, Monitoring
Wi-Fi serial transport firmwareFirmware module
ESP32, Wi-Fi, UART, Data transport
HAL to UDP motion interfaceFirmware development
ESP32, UDP, PWM, Hardware abstraction
ESP32 camera web serverFirmware development
ESP32, Camera, Embedded web server
Triple channel CAN diagnostic interfaceDevelopment work
CAN, Bus diagnostics, Frame handling
Cellular and Wi-Fi MQTT gatewayFirmware development
MQTT, Wi-Fi, Cellular communication, ESP32
Environmental OLED and cloud loggerDevelopment work
ESP32, Wi-Fi, OLED, Cloud logging, Environmental sensing
CAN controlled LED and output nodeFirmware module
CAN, LED control, Output handling
CAN addressable LED controllerFirmware module
CAN, WS2812, Frame processing
Remote claw machine controlControl integration / camera work ongoing
ESP32, MQTT, WebSocket, EMQX, Firebase, Failsafe control

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