Mathias Rasmussen
6c82d7dc5a
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4 years ago | |
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.github | 4 years ago | |
Silabs | 4 years ago | |
targets | 4 years ago | |
.editorconfig | 4 years ago | |
BLHeliBootLoad.inc | 4 years ago | |
Bluejay.asm | 4 years ago | |
CHANGELOG.md | 4 years ago | |
COPYING | 4 years ago | |
Common.inc | 4 years ago | |
Makefile | 4 years ago | |
README.md | 4 years ago | |
bluejay.svg | 4 years ago |
README.md
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.