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Fork from bluejay at github and modified for my custom ESC. I need to modify it because some mistake design on my ESC hardware.
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Mathias Rasmussen 21d5351ad6
refactor: Simplify pwm polarity setup 		4 years ago
.github build: Commitlint and changelog scripts 4 years ago
Silabs chore: Move efm include files 4 years ago
targets refactor: Simplify pwm polarity setup 4 years ago
.editorconfig style: Add editorconfig 4 years ago
BLHeliBootLoad.inc BLHeli_S source code 4 years ago
Bluejay.asm refactor: Make crossbar skip pins on port 2 4 years ago
CHANGELOG.md chore(release): 0.10 4 years ago
COPYING BLHeli_S source code 4 years ago
Common.inc feat: Add Z layout 4 years ago
Makefile feat: Add Z layout 4 years ago
README.md docs: Update readme 4 years ago
bluejay.svg docs: Update readme 4 years ago

README.md

Bluejay

Bluejay

Digital ESC firmware for controlling brushless motors in multirotors.

Based on BLHeli_S revision 16.7

Bluejay aims to be an open source successor to BLHeli_S adding several improvements to ESCs with Busy Bee MCUs.

Current Features

  • Digital signal protocol: DShot 150, 300 and 600
  • Bidirectional DShot: RPM telemetry
  • Selectable PWM frequency: 24, 48 and 96 kHz
  • PWM dithering: 11-bit effective throttle resolution

See the project changelog for a detailed list of changes.

Flashing ESCs

Bluejay firmware can be flashed to BLHeli_S compatible ESCs and configured using Bluejay Configurator (a fork of BLHeli Configurator).

Release binaries

All releases can be found in the releases section.

Release files use a naming convention similar to BLHeli: {T}_{M}_{D}_{P}_{V}.hex.
T A - W Target ESC layout
M L or H MCU type: L (BB1 24MHz), H (BB2 48MHz)
D 0 - 90 Dead time (0 only for ESCs with built-in dead time)
P 24, 48 or 96 PWM frequency [kHz]
V E.g. 0.7 Bluejay version

Comparison of BLHeli_S and Bluejay settings

The following table shows a correspondence between BLHeli_S and Bluejay's startup power settings.

BLHeli_S Bluejay
Startup Power Min. Startup Power Max. Startup Power RPM Power (Rampup)
0.031 2 (1001) 1 (1004) 2x
0.047 4 (1002) 2 (1008) 2x
0.063 6 (1003) 3 (1012) 3x
0.094 8 (1004) 4 (1016) 4x
0.125 12 (1006) 6 (1024) 5x
0.188 18 (1009) 9 (1035) 6x
0.25 24 (1012) 12 (1047) 7x
0.38 36 (1018) 18 (1071) 8x
0.50 50 (1024) 25 (1098) 9x
0.75 74 (1036) 37 (1145) 10x
1.00 100 (1049) 50 (1196) 11x
1.25 124 (1061) 62 (1243) 12x
1.50 150 (1073) 75 (1294) 13x
  • Minimum startup power: Minimum power when starting motors. Increase if motors are not able to start with low throttle input.
  • Maximum startup power: Limits power when starting motors or reversing direction.
  • RPM Power Protection (Rampup): Limits how fast power can be increased. Lower values will avoid power spikes but can also decrease acceleration.

Contribute

Any help you can provide is greatly appreciated!

If you have problems, suggestions or other feedback you can open an issue.