Notebook: Mar 2026

🤖 ECU Piggyback / Copilot Controller ESP32

A single place for datalog (ECU parameters, aftermarket sensors etc). Single channel for emu. Add CAN to share sensor data for close-loop control.

Considering going SD or SD/MAF blend, need to do more research.

Hard mounting Pixracer for accuracy, expendable to accept more sensors / GPS. Could use onboard micro SD for logging.

[DONE] Firmware & Android App

• firmware & ECU handshake via SSM

• SSM uses prefix “SSM” + full index (20–78, no offset)

• telemetry is push-only, no snapshot API

• sync all sensors

• SSM2 - Maximum 20 params per batch

• analog sensor - full calibration support via CMD 0x21 and 0x22

• calibration saved to storage (FRAM)

• Android GUI - liveview / setting / CTRL SSM / CTRL Emu / logging / G-meter

[WIP] Firmware & Android App

• emu failsafe & testing

• CAN bus

• RS232 from AEM wideband

• CAN from AEM wideband

• MAP sensor for SD (speed density)

• train TinyML & Randomforest with log

• CAN from Pixracer

• redesign UI

• add screen (3D live graph…)
  

[WIP] ESP32 C3 / S3 addon

• S3 - Waterspray controller (WSC)

• S3 - Water injection (WI)

• S3 - Electronic Boost controller (EBC)

• S3 - Exhaust control valve (ECV)

• C3mini - HIH8130 humidity sensor

[NOTE]

Speed‑density has upside but it does have real mechanical downsides compared to a MAF‑based…

• is sensitive to any change in VE

• is more unstable at idle and low load

• heat‑soaks badly

• requires a perfect MAP signal

• can’t detect real airflow changes from leaks

• tuning is harder to get perfect across weather

• transient response is harder

• is more dangerous when something goes wrong

[DONE] Pixracer Flight Controller’s sensor for Android G-meter

• Set rate to 10Hz, anymore only overload the system

• Pixracer use SR1 and SR5 via ESP8266

• Level Horizon (the “zero” calibration, set AHRS_TRIM_X / AHRS_TRIM_Y)

[WIP] Pixracer

• Relocate for better heat management

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🎥 Sony RX0II

Redesign lens mount to accept different flange distance, short for close focus (TTV), standard for normal FOV (car mount / tight space).

[DONE] Lens Turbo with EOS mount to use with FF lens

• 0.72x focal reducers (roughly 2× crop FF equivalent)

• +1 stop of light (f2.8 → ~f2.0)

[NOTE]

With focal reducers, FF lens behave as:

• Samyang 14mm T3.1 (FOV ≈ ~28mm equivalent) (T2.2)

• Biotar 58mm f2 (FOV ≈ ~115mm equivalent) (f1.4)

• Contax Zeiss 85mm f1.4 (FOV ≈ ~170mm equivalent) (f1.0)

• Nikon Series E 28mm f2.8 (FOV ≈ ~40mm equivalent) (f2.0)

• Nikon Series E 50mm f1.8 (FOV ≈ ~100mm equivalent) (f1.3)

[WIP] close focus for TTV

• Lumix 20mm Pancake lens convert with manual focus