krengo
How one tilt of the bike becomes a number beside your watts, and which parts exist today and which are still plans.
One small unit rides under the saddle, near the bike’s centre line, and feels every tilt and shake. Nothing on the handlebar has to be touched.
The small board for under the saddle is not soldered and the PCB has not been ordered. Today the logger is a bench prototype.
An accelerometer feels gravity and forces. A gyroscope feels how fast the bike rotates. Twenty times a second the sensor reports both.
Logged on the bench. No ride has been logged yet.
Gravity always points down. The sensor knows where its own down is, and the angle between the two is the lean angle. The gyroscope fills in between readings.
The sensor’s own fusion gives the angle. Whether it holds up in a real corner is what the first ride will show.
The angle is sent over Bluetooth Low Energy to a Garmin Edge or Fenix. No phone is in the chain.
The Bluetooth code is written and tested on a computer, but not yet on the board.
A Connect IQ data field draws the lean angle beside power, in a colour that says how close the corner is to the grip limit, G1 to G6.
Tested on fictional data in Garmin’s simulator, Edge 540 and Fenix 7. Not on a real Edge, not in the Connect IQ Store.
The logger also writes every reading to a microSD card, so the ride is yours to read afterwards even if Bluetooth drops out.
Logging works on the bench. Logging and Bluetooth together on the new board is not tested.
Drop the file on the analyser. It finds the corners and plots the lean, and the file never leaves your browser.
Runs on krengo.pro and is tested on example and synthetic files. No real Krengo ride has gone through it yet.
The honest version of the chain above.
| Step | Status | What that means |
|---|---|---|
| Sensor | Not built yet | The small board for under the saddle is not soldered and the PCB has not been ordered. Today the logger is a bench prototype. |
| Measure | Bench only | Logged on the bench. No ride has been logged yet. |
| Lean | Bench only | The sensor’s own fusion gives the angle. Whether it holds up in a real corner is what the first ride will show. |
| Send | Not built yet | The Bluetooth code is written and tested on a computer, but not yet on the board. |
| Field | Simulator only | Tested on fictional data in Garmin’s simulator, Edge 540 and Fenix 7. Not on a real Edge, not in the Connect IQ Store. |
| Log | Bench only | Logging works on the bench. Logging and Bluetooth together on the new board is not tested. |
| Analyse | Built and tested | Runs on krengo.pro and is tested on example and synthetic files. No real Krengo ride has gone through it yet. |
The animations are drawings. The numbers in them are made up. No real ride has been logged yet, and the first one will decide whether the lean angle holds up. Read the build story