01
Hardware & Firmware
From schematic to bring-up. Bare-metal, RTOS and embedded Linux firmware for IoT products that hold up in the field.
Engineering for connected products
From circuitto cloud.
Hardware, firmware and software delivered by a single technical partner with engineering rigor and product vision.
About
A technical partner not a vendor.
Fraga's Tech is Pedro Fraga's engineering practice: a single point of contact for products that need to cross the boundary between hardware, firmware and software.
I work directly with founders and technical teams that value architectural clarity, auditable code and realistic timelines.
4+Years in engineering
100%Nationwide reach
9+Projects delivered
Services
Three fronts, one technical lead.
Each service exists to solve a critical point of the product journey from prototype to deploy.
02
Connectivity & Integration
BLE, Wi-Fi, LoRa, MQTT and industrial protocols. Secure integrations between devices, gateways and the cloud.
03
Software & APIs
Dashboards, APIs and backends that turn telemetry into decisions, built on auditable, scalable architectures with real observability.
Products
Beyond consulting
Ecossistema for solo professionals
Website, scheduling and a client area running on their own. See the system behind Dr. Mikaelly's practice.
Explore EcossistemaOpen-source tools & components
Serial Monitor Pro and four ESP-IDF components, free and published on Espressif's official registry.
See productsSelected work
Real projects, from chip to dashboard.
A selection of deliveries in firmware, embedded Linux, open-source components and tools.
NDA
Smart photocell mesh network
Photocells on a mesh network reporting consumption, brightness and dimming to a cellular gateway with operations dashboard.
ESP32MeshNB-IoTMQTTREST
NDA
NB-IoT water & gas meter
Low-power pulse counters attached to water and gas meters, transmitting readings via NB-IoT to the customer's API.
MCUNB-IoTPulse CounterREST
NDA
Rockchip PX3 industrial gateway
Bring-up and validation of a custom Linux image with mesh, cellular, corporate VPN, PoE Ethernet and PMIC power management.
Rockchip PX3Embedded LinuxOpenVPNPoEPMIC
CLI API: Console for ESP32
Official Espressif registry component wrapping ESP-IDF console and argtable3. UART, USB Serial/JTAG and CDC; persistent history; auto-help.
ESP-IDFCargtable3linenoise
View on Espressif RegistrySecure OTA over HTTPS
ESP-IDF OTA reference: automatic rollback, SHA256 verification, TLS via mbedtls and a Python server with pytest test suite.
ESP-IDF 5.5+CmbedtlsOpenSSLpytest
View on GitHubSerial Monitor Pro
Browser-based serial monitor using the Web Serial API that removes the friction of installing a full IDE just to read a device log.
Next.jsTypeScriptTailwindWeb Serial API
Open appESP32 driver collection
Reusable ESP32 drivers and APIs (BLE GATT server, MQTT 5, Wi-Fi, WS2812, LM75A sensor and GPIO), published as ESP-IDF components.
ESP-IDFCBLEMQTTWi-FiI2C
View on GitHubNDA
Production & calibration jig
Factory bench for validation and calibration with pneumatic control, WEG meter over RS485, Itron photoelectric sensors, ESP32 pulse emitter and embedded CLI for provisioning.
PythonESP32RS485UARTPneumatics
Dr. Mikaelly Teodorio clinical site
Institutional website for a dental surgeon specialised in aesthetic dentistry, covering branding, performance and patient acquisition.
Next.jsTypeScriptTailwind
Open sitePersonal Smart Home lab
Personal ESP32 and Arduino projects for home automation and power monitoring of my own setup.
ESP32ArduinoBLEWS2812Sensores
NDA
Smart photocell mesh network
Photocells on a mesh network reporting consumption, brightness and dimming to a cellular gateway with operations dashboard.
ESP32MeshNB-IoTMQTTREST
NDA
NB-IoT water & gas meter
Low-power pulse counters attached to water and gas meters, transmitting readings via NB-IoT to the customer's API.
MCUNB-IoTPulse CounterREST
NDA
Rockchip PX3 industrial gateway
Bring-up and validation of a custom Linux image with mesh, cellular, corporate VPN, PoE Ethernet and PMIC power management.
Rockchip PX3Embedded LinuxOpenVPNPoEPMIC
CLI API: Console for ESP32
Official Espressif registry component wrapping ESP-IDF console and argtable3. UART, USB Serial/JTAG and CDC; persistent history; auto-help.
ESP-IDFCargtable3linenoise
View on Espressif RegistrySecure OTA over HTTPS
ESP-IDF OTA reference: automatic rollback, SHA256 verification, TLS via mbedtls and a Python server with pytest test suite.
ESP-IDF 5.5+CmbedtlsOpenSSLpytest
View on GitHubSerial Monitor Pro
Browser-based serial monitor using the Web Serial API that removes the friction of installing a full IDE just to read a device log.
Next.jsTypeScriptTailwindWeb Serial API
Open appESP32 driver collection
Reusable ESP32 drivers and APIs (BLE GATT server, MQTT 5, Wi-Fi, WS2812, LM75A sensor and GPIO), published as ESP-IDF components.
ESP-IDFCBLEMQTTWi-FiI2C
View on GitHubNDA
Production & calibration jig
Factory bench for validation and calibration with pneumatic control, WEG meter over RS485, Itron photoelectric sensors, ESP32 pulse emitter and embedded CLI for provisioning.
PythonESP32RS485UARTPneumatics
Dr. Mikaelly Teodorio clinical site
Institutional website for a dental surgeon specialised in aesthetic dentistry, covering branding, performance and patient acquisition.
Next.jsTypeScriptTailwind
Open sitePersonal Smart Home lab
Personal ESP32 and Arduino projects for home automation and power monitoring of my own setup.
ESP32ArduinoBLEWS2812Sensores
NDA
Smart photocell mesh network
Photocells on a mesh network reporting consumption, brightness and dimming to a cellular gateway with operations dashboard.
ESP32MeshNB-IoTMQTTREST
NDA
Rockchip PX3 industrial gateway
Bring-up and validation of a custom Linux image with mesh, cellular, corporate VPN, PoE Ethernet and PMIC power management.
Rockchip PX3Embedded LinuxOpenVPNPoEPMIC
Secure OTA over HTTPS
ESP-IDF OTA reference: automatic rollback, SHA256 verification, TLS via mbedtls and a Python server with pytest test suite.
ESP-IDF 5.5+CmbedtlsOpenSSLpytest
View on GitHubESP32 driver collection
Reusable ESP32 drivers and APIs (BLE GATT server, MQTT 5, Wi-Fi, WS2812, LM75A sensor and GPIO), published as ESP-IDF components.
ESP-IDFCBLEMQTTWi-FiI2C
View on GitHubDr. Mikaelly Teodorio clinical site
Institutional website for a dental surgeon specialised in aesthetic dentistry, covering branding, performance and patient acquisition.
Next.jsTypeScriptTailwind
Open siteNDA
Smart photocell mesh network
Photocells on a mesh network reporting consumption, brightness and dimming to a cellular gateway with operations dashboard.
ESP32MeshNB-IoTMQTTREST
NDA
Rockchip PX3 industrial gateway
Bring-up and validation of a custom Linux image with mesh, cellular, corporate VPN, PoE Ethernet and PMIC power management.
Rockchip PX3Embedded LinuxOpenVPNPoEPMIC
Secure OTA over HTTPS
ESP-IDF OTA reference: automatic rollback, SHA256 verification, TLS via mbedtls and a Python server with pytest test suite.
ESP-IDF 5.5+CmbedtlsOpenSSLpytest
View on GitHubESP32 driver collection
Reusable ESP32 drivers and APIs (BLE GATT server, MQTT 5, Wi-Fi, WS2812, LM75A sensor and GPIO), published as ESP-IDF components.
ESP-IDFCBLEMQTTWi-FiI2C
View on GitHubDr. Mikaelly Teodorio clinical site
Institutional website for a dental surgeon specialised in aesthetic dentistry, covering branding, performance and patient acquisition.
Next.jsTypeScriptTailwind
Open siteNDA
NB-IoT water & gas meter
Low-power pulse counters attached to water and gas meters, transmitting readings via NB-IoT to the customer's API.
MCUNB-IoTPulse CounterREST
CLI API: Console for ESP32
Official Espressif registry component wrapping ESP-IDF console and argtable3. UART, USB Serial/JTAG and CDC; persistent history; auto-help.
ESP-IDFCargtable3linenoise
View on Espressif RegistrySerial Monitor Pro
Browser-based serial monitor using the Web Serial API that removes the friction of installing a full IDE just to read a device log.
Next.jsTypeScriptTailwindWeb Serial API
Open appNDA
Production & calibration jig
Factory bench for validation and calibration with pneumatic control, WEG meter over RS485, Itron photoelectric sensors, ESP32 pulse emitter and embedded CLI for provisioning.
PythonESP32RS485UARTPneumatics
Personal Smart Home lab
Personal ESP32 and Arduino projects for home automation and power monitoring of my own setup.
ESP32ArduinoBLEWS2812Sensores
NDA
NB-IoT water & gas meter
Low-power pulse counters attached to water and gas meters, transmitting readings via NB-IoT to the customer's API.
MCUNB-IoTPulse CounterREST
CLI API: Console for ESP32
Official Espressif registry component wrapping ESP-IDF console and argtable3. UART, USB Serial/JTAG and CDC; persistent history; auto-help.
ESP-IDFCargtable3linenoise
View on Espressif RegistrySerial Monitor Pro
Browser-based serial monitor using the Web Serial API that removes the friction of installing a full IDE just to read a device log.
Next.jsTypeScriptTailwindWeb Serial API
Open appNDA
Production & calibration jig
Factory bench for validation and calibration with pneumatic control, WEG meter over RS485, Itron photoelectric sensors, ESP32 pulse emitter and embedded CLI for provisioning.
PythonESP32RS485UARTPneumatics
Personal Smart Home lab
Personal ESP32 and Arduino projects for home automation and power monitoring of my own setup.
ESP32ArduinoBLEWS2812Sensores
NDA
Smart photocell mesh network
Photocells on a mesh network reporting consumption, brightness and dimming to a cellular gateway with operations dashboard.
ESP32MeshNB-IoTMQTTREST
CLI API: Console for ESP32
Official Espressif registry component wrapping ESP-IDF console and argtable3. UART, USB Serial/JTAG and CDC; persistent history; auto-help.
ESP-IDFCargtable3linenoise
View on Espressif RegistryESP32 driver collection
Reusable ESP32 drivers and APIs (BLE GATT server, MQTT 5, Wi-Fi, WS2812, LM75A sensor and GPIO), published as ESP-IDF components.
ESP-IDFCBLEMQTTWi-FiI2C
View on GitHubPersonal Smart Home lab
Personal ESP32 and Arduino projects for home automation and power monitoring of my own setup.
ESP32ArduinoBLEWS2812Sensores
NDA
Smart photocell mesh network
Photocells on a mesh network reporting consumption, brightness and dimming to a cellular gateway with operations dashboard.
ESP32MeshNB-IoTMQTTREST
CLI API: Console for ESP32
Official Espressif registry component wrapping ESP-IDF console and argtable3. UART, USB Serial/JTAG and CDC; persistent history; auto-help.
ESP-IDFCargtable3linenoise
View on Espressif RegistryESP32 driver collection
Reusable ESP32 drivers and APIs (BLE GATT server, MQTT 5, Wi-Fi, WS2812, LM75A sensor and GPIO), published as ESP-IDF components.
ESP-IDFCBLEMQTTWi-FiI2C
View on GitHubPersonal Smart Home lab
Personal ESP32 and Arduino projects for home automation and power monitoring of my own setup.
ESP32ArduinoBLEWS2812Sensores
NDA
NB-IoT water & gas meter
Low-power pulse counters attached to water and gas meters, transmitting readings via NB-IoT to the customer's API.
MCUNB-IoTPulse CounterREST
Secure OTA over HTTPS
ESP-IDF OTA reference: automatic rollback, SHA256 verification, TLS via mbedtls and a Python server with pytest test suite.
ESP-IDF 5.5+CmbedtlsOpenSSLpytest
View on GitHubNDA
Production & calibration jig
Factory bench for validation and calibration with pneumatic control, WEG meter over RS485, Itron photoelectric sensors, ESP32 pulse emitter and embedded CLI for provisioning.
PythonESP32RS485UARTPneumatics
NDA
NB-IoT water & gas meter
Low-power pulse counters attached to water and gas meters, transmitting readings via NB-IoT to the customer's API.
MCUNB-IoTPulse CounterREST
Secure OTA over HTTPS
ESP-IDF OTA reference: automatic rollback, SHA256 verification, TLS via mbedtls and a Python server with pytest test suite.
ESP-IDF 5.5+CmbedtlsOpenSSLpytest
View on GitHubNDA
Production & calibration jig
Factory bench for validation and calibration with pneumatic control, WEG meter over RS485, Itron photoelectric sensors, ESP32 pulse emitter and embedded CLI for provisioning.
PythonESP32RS485UARTPneumatics
NDA
Rockchip PX3 industrial gateway
Bring-up and validation of a custom Linux image with mesh, cellular, corporate VPN, PoE Ethernet and PMIC power management.
Rockchip PX3Embedded LinuxOpenVPNPoEPMIC
Serial Monitor Pro
Browser-based serial monitor using the Web Serial API that removes the friction of installing a full IDE just to read a device log.
Next.jsTypeScriptTailwindWeb Serial API
Open appDr. Mikaelly Teodorio clinical site
Institutional website for a dental surgeon specialised in aesthetic dentistry, covering branding, performance and patient acquisition.
Next.jsTypeScriptTailwind
Open siteNDA
Rockchip PX3 industrial gateway
Bring-up and validation of a custom Linux image with mesh, cellular, corporate VPN, PoE Ethernet and PMIC power management.
Rockchip PX3Embedded LinuxOpenVPNPoEPMIC
Serial Monitor Pro
Browser-based serial monitor using the Web Serial API that removes the friction of installing a full IDE just to read a device log.
Next.jsTypeScriptTailwindWeb Serial API
Open appDr. Mikaelly Teodorio clinical site
Institutional website for a dental surgeon specialised in aesthetic dentistry, covering branding, performance and patient acquisition.
Next.jsTypeScriptTailwind
Open siteContact
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