-The Multishot protocol uses a 5-25µs signal that allows refresh rates of up to 32 KHz, while
maintaining 240 steps of resolution.
Suggestions:
- First: Ask “What FC and flight controller firmware and version?” on problematic drone.
- Second: Ask “What ESC and ESC firmware and version?” on problematic drone.
- Second: Suggest supporting websites to help guide themselves -
+RCGroups: *Protocol Videos- https://www.rcgroups.com/forums/showpost.php?p=36552970&postcount=2765
*How to re-flash ESCs & FC- https://www.rcgroups.com/forums/showpost.php?p=36200950&postcount=1468
+YouTube: *Joshua Bardwell-“What is Dshot, Multishot, oneshot, and sdfsdfpwm?”:
https://www.youtube.com/watch?v=X-1YMl6aO1g
Supports: Blheli, Blheli_S
Latest version (as of: Jan 10 release) - Blheli_S 16.65
Blheli (Regular) 14.85 download link:
https://github.com/cleanflight/blheli-multishot/releases/tag/Multishot_14.85
Blheli_S 16.65 download link:
https://github.com/cleanflight/blheli-multishot/releases/tag/Blheli_S_16.65
Q&A for Multishot
1) Q: Do I need to calibrate ESCs running DSHOT?
A: Yes. Calibrate using corresponding flight controller GUI, or BLHeli Suite. Link to download
BLheli Suite: https://www.mediafire.com/folder/dx6kfaasyo24l/BLHeliSuite
2) Q: How fast is Multishot protocol?
A: In comparison, OneShot125 (125-250µs) which was originally created by Flyduino, is 8 times
faster than the standard PWM protocol. MultiShot (5-25µs) is about 10x faster than Oneshot125
(OS125). Multishot translates to 80x faster than Oneshot125.
3) Q: Can all Atmel ESCs support Multishot?
A: F330 Atmel chipset cannot process the fast refresh rates. BLHeli and BLHeli_S ESCs with F390
Atmel chipset must be used minimum for Multishot.
4) Q: What flight controller MCUs can handle Multishot?
A: F1, F3, F4 processors support Multishot. F1 and F3 may be limited to 4k or even 8k maximum.
5) Q: How low looptime can I get my flight controller to go when running Multishot? A: Depending on
setup, one can achieve maximum of 32k refresh rate. Appropriate flight controller firmware and
processor needed.
6) Q: Who developed Multishot? A: Raceflight.
7) Q: What flight Controller Firmware are compatible with Multishot? A: Betaflight, Cleanflight,
and Raceflight support Multishot.
8) Q: What ESC Firmwares are compatible with Multishot?
A: BLHeli and BLHeli_S firmwares are compatible with Multishot.
9) Q:
hannel) signal(s)?
A: Multishot runs a resolution of 240 steps.
10) Q: Is Multishot the fastest protocol at the moment?
A: As of March 2017, Multishot is currently the fastest protocol. Though it may not have the
resolution compared to DSHOT600, Multishot is fastest at 25µs (25 micro seconds)
transmission speed.