Support matrix

Reviewed on 2026-11-02, schema version 1. The data is published as support-matrix/matrix.toml; how to read the statuses is explained in Reading the matrix.

Boards

• Altruist Urban (esp32c6): Outdoor air-quality station: SDS011, BME280 and ICS-43434 microphone. The ROHI C6 pin map is taken from the upstream schematic and is not yet verified on hardware.
• Altruist Urban (legacy) (esp32c3): Legacy ESP32-C3 variant of the Urban. The ROHI pin map is checked against the Urban pinout, but airalab/hardware documents only the ESP32-C6 board, so there is no upstream schematic for this variant.
• Altruist Insight (esp32c6): Indoor station with a display and an SCD4x CO2 sensor. ROHI has no Insight board module, firmware or display driver; only the independent altruist-firmware targets it.

Firmware

• ROHI altruist-urban: Rust firmware of this repository, selected per chip by the esp32c3 / esp32c6 feature.
• altruist-firmware: Independent PlatformIO firmware of the Altruist devices with its own feature set; ROHI has not assessed it and its claims are not ROHI support.

Capabilities per board and firmware

Altruist Urban with ROHI altruist-urban (esp32c6)

Limitations of BMP280 / BME280 environment:

• The ESP32-C6 pin map comes from the upstream schematic and is not verified on hardware.
• The driver handles BMP280 (no humidity) and BME280; the Urban documents a BME280.

Limitations of SCD40 / SCD41 CO2:

• The Urban sensor list has no SCD4x; the firmware starts the driver anyway and reports no measurement and an unhealthy sensor state when none answers on the I²C bus.
• Attaching an external SCD4x is not documented upstream and not verified.

Limitations of SDS011 particulate matter:

• The ESP32-C6 pin map comes from the upstream schematic and is not verified on hardware.
• The schematic names the SDS011 nets PM_TX and PM_RX without a viewpoint; swap the pins if the sensor stays silent.
• The SDS011 accuracy is ±10 µg/m³ or ±15 % (upstream datasheet figure).

Limitations of I²S microphone noise level:

• The ESP32-C6 pin map comes from the upstream schematic and is not verified on hardware.
• Unweighted dB SPL (not dBA) from the nominal ICS-43434 sensitivity (-26 dBFS at 94 dB SPL); no per-device calibration, so values include the microphone response and the device’s own noise.
• Not comparable to a calibrated, A-weighted sound level meter.

Limitations of Wi-Fi station and IP networking:

• Scan, connect, reconnect, wrong password, heap minimum and 24 h stability are listed as not yet measured on hardware.

Limitations of Time synchronisation (NTP):

• Depends on a working Wi-Fi connection; no hardware run recorded.

Limitations of Telemetry (connectivity):

• Depends on Wi-Fi, time and a provisioned device identity; no hardware run against a connectivity provider is recorded.
• The independent altruist-firmware reports to Robonomics through its own mechanism; the two are not interchangeable.

Limitations of BLE control plane:

• One heap measurement exists (Wi-Fi and BLE running, chip not recorded); advertising, coexistence, MTU and 24 h stability are not measured.
• No BLE pairing or encryption yet.

Limitations of Persistent configuration store:

• The flash self-test (example-config) exists, but no run is recorded.

Limitations of Device identity:

• The hardware checklist (provision, reboot, erase, re-provision) has no recorded results.

Altruist Urban with altruist-firmware (esp32c6)

Limitations of BMP280 / BME280 environment:

• Claimed by the altruist-firmware README; ROHI has not built or verified it.

Limitations of SDS011 particulate matter:

• Claimed by the altruist-firmware README; ROHI has not built or verified it.

Limitations of I²S microphone noise level:

• Claimed by the altruist-firmware README; ROHI has not built or verified it.
• Reports the level in dBA, a different metric from the unweighted dB SPL of ROHI; the values must not be compared.

Altruist Urban (legacy) with ROHI altruist-urban (esp32c3)

Limitations of BMP280 / BME280 environment:

• The ESP32-C3 pin map is checked against the Urban pinout, but this variant has no schematic in airalab/hardware and no recorded hardware run.
• The driver handles BMP280 (no humidity) and BME280; the Urban documents a BME280.

Limitations of SCD40 / SCD41 CO2:

• No upstream documentation of the variant’s sensors; the firmware starts the SCD4x driver and reports no measurement and an unhealthy sensor state when none answers.

Limitations of SDS011 particulate matter:

• The ESP32-C3 pin map is checked against the Urban pinout, but this variant has no schematic in airalab/hardware and no recorded hardware run.
• The UART wiring was not recorded in a hardware report.
• The SDS011 accuracy is ±10 µg/m³ or ±15 % (upstream datasheet figure).

Limitations of I²S microphone noise level:

• The ESP32-C3 pin map is checked against the Urban pinout, but this variant has no schematic in airalab/hardware and no recorded hardware run.
• Unweighted dB SPL (not dBA) from the nominal ICS-43434 sensitivity (-26 dBFS at 94 dB SPL); no per-device calibration, so values include the microphone response and the device’s own noise.
• Not comparable to a calibrated, A-weighted sound level meter.

Limitations of Wi-Fi station and IP networking:

• Scan, connect, reconnect, wrong password, heap minimum and 24 h stability are listed as not yet measured on hardware.

Limitations of Time synchronisation (NTP):

• Depends on a working Wi-Fi connection; no hardware run recorded.

Limitations of Telemetry (connectivity):

• Depends on Wi-Fi, time and a provisioned device identity; no hardware run against a connectivity provider is recorded.
• The independent altruist-firmware reports to Robonomics through its own mechanism; the two are not interchangeable.

Limitations of BLE control plane:

• One heap measurement exists (Wi-Fi and BLE running, chip not recorded); advertising, coexistence, MTU and 24 h stability are not measured.
• No BLE pairing or encryption yet.

Limitations of Persistent configuration store:

• The flash self-test (example-config) exists, but no run is recorded.

Limitations of Device identity:

• The hardware checklist (provision, reboot, erase, re-provision) has no recorded results.

Altruist Urban (legacy) with altruist-firmware (esp32c3)

Limitations of BMP280 / BME280 environment:

• Claimed by the altruist-firmware README; ROHI has not built or verified it.

Limitations of SDS011 particulate matter:

• Claimed by the altruist-firmware README; ROHI has not built or verified it.

Limitations of I²S microphone noise level:

• Claimed by the altruist-firmware README; ROHI has not built or verified it.
• Reports the level in dBA, a different metric from the unweighted dB SPL of ROHI; the values must not be compared.

Altruist Insight: no firmware targets this board (esp32c6)

Limitations of SCD40 / SCD41 CO2:

• The driver exists, but no ROHI firmware or Insight board module wires it.

Limitations of Display:

• ROHI has no display driver.

Altruist Insight with altruist-firmware (esp32c6)

Limitations of SCD40 / SCD41 CO2:

• Claimed by the altruist-firmware README; ROHI has not built or verified it.

Limitations of Display:

• Claimed by the altruist-firmware README (display and QR code); ROHI has not built or verified it.

Use cases

Still missing for “Measure CO2 with Altruist Urban”:

• An upstream-documented way to attach an SCD4x to the Urban
• A hardware report with an SCD4x on the Urban

Still missing for “Measure environmental noise with ROHI”:

• A-weighting (dBA)
• Per-device calibration against a reference meter
• Hardware verification on a board

Still missing for “Run ROHI on Altruist Insight”:

• Insight board module in rohi-hal-esp
• Display driver
• Insight firmware
• Hardware verification

Still missing for “Build a water-quality monitor with existing ROHI firmware”:

• Sensor drivers
• A board definition and firmware
• Calibration procedures
• Hardware verification