🔺 Unique Pyramid-Inspired FPV Drone Frame
Striking triangular facets distribute forces with exceptional rigidity while
delivering a bold, geometric silhouette in the air. Designed for speed,
stability, and easy 3D printing. ✅ Lightweight · Rigid · Modular Assembly
Compatible with FPV cameras and mainstream flight controllers. Recommended
materials: PLA+ / PETG / ABS.
🔺 Pyramid Geometry🖨️ All 3D Printed🧩 Modular Parts📷 FPV Camera Mount📐 0.2 mm Layer Height
A compact pre-flight checklist for the Pyramash speed build.
01 · Prepare
Set soldering iron to 350–380°C.
Gather flux, multimeter, wire strippers, and foam tape.
Keep a smoke stopper ready for the first power-up.
02 · Frame
Use M3 screws with snug torque only.
Check motor screws do not reach the windings.
Route battery leads and VTX antenna toward the rear.
03 · Power
Solder XT60 directly to the main battery pads.
Add a 1000µF 50V low-ESR capacitor at those same pads.
Keep capacitor legs and battery wiring as short as possible.
04 · Wiring
Connect ESC signals to M1–M4 with a shared ground reference.
Cross ELRS receiver RX/TX lines: RX→TX, TX→RX.
Power a 2.5W VTX from VBAT, never the 5V rail.
05 · Configure
Remove props before touching the Motors tab.
Verify motor order and direction in Betaflight.
Start with conservative PIDs and restore filtering if you see jello.
06 · Flight
Secure every wire away from motor bells and props.
Use the smoke stopper, then inspect for heat or shorts.
Land early on the first pack and check battery voltage.
Safety first: Props off for all bench tests. A loose prop, reversed motor, short circuit, or powered VTX without an antenna can cause serious damage. Fly only in a legal, open area and disarm immediately if video is lost.
Pyramash High-Speed Specs
The recommended hardware stack for a lightweight 5-inch external-ESC racer.
Flight Stack
iFlight Borg F7 Mini FC with STM32F722RET6.
ICM42688 gyro and 32MB Blackbox.
Four T-Motor F60A PRO II 64-bit 6S ESCs.
ESC rating: 60A continuous, 70A burst, 4–8S LiHV.
Motors
Option 1: BrotherHobby Avenger V3 2306 2650KV.
Option 2: T-Motor F2004 2850KV, about 22g each.
Both are extreme 6S setups; manage throttle carefully.
Analog FPV
DeepSpace DS 5.8G 2.5W VTX, adjustable 25–2500mW.
Foxeer T-Rex Micro 1200TVL or RunCam Phoenix 2.
2.1mm lens with Lumenier AXII HD 2 or Foxeer Lollipop 4+.
Use an SMA 90° adapter only with a securely attached antenna.
Airframe & Power
Pyramash 5-inch high-speed frame.
GNB 6S 1100mAh 130C LiHV or Tattu R-Line V5 1050mAh.
Gemfan 51466 or HQProp DT 5.1×4.1×3 props.
HappyModel EP1 ELRS 2.4GHz receiver, or 915MHz for range.
Weight Reduction
Direct-solder motor wires to ESC pads; avoid bullet connectors.
Trim ESC, receiver, and VTX wiring to the required length.
Skip buzzer, GPS, LEDs, and GoPro hardware when not needed.
Add a low-ESR 1000µF 50V capacitor at the main battery pads.
Tuning Targets
Starting rates: roll 900°/s and pitch 750°/s.
Use throttle PID attenuation to reduce full-throttle oscillation.
Validate motor temperature, current draw, and video range gradually.
Critical warning: Props must be removed for bench tests. Use a smoke stopper or current-limited supply before connecting a LiPo. A 2650KV motor on 6S can destroy the stack during a desync, and a high-power VTX must never be operated without its antenna connected.
Pyramash Tuning Guide
A measured Betaflight, ESC, ELRS, and Blackbox workflow for high-speed stability.
01 · Betaflight Core
Flash the latest stable Betaflight 4.5.x for the F7 target.
Use DSHOT600 and enable Bidirectional DShot.
Set RPM filter slots to 2 and start Q at 400.
Set TPA breakpoint to 1650 and TPA rate to 0.70.
02 · Filters & PID
Start I-term Relax at 15–20 to reduce propwash.
Set Dynamic Notch to 80–600Hz with Q 1.5.
Enable D_Min at about 0.6 of normal D-gain.
Change one setting at a time and log the result.
03 · BLHeli_32 ESC
Update ESC firmware to 32.7 or later.
Use Auto motor timing; compare Low or Medium-High carefully.
Start startup power at 0.75–1.00 if motors stutter.
Try 48kHz PWM where supported and keep Demag Low.
04 · ELRS Link
Select 1000Hz Full packet rate where the link supports it.
Use telemetry ratio 1:2 or Std for racing.
Fix transmitter power at 100mW or higher for a solid link.
Disable unnecessary telemetry sensors to preserve bandwidth.
05 · Blackbox
Enable Blackbox and assign logging to a switch.
Capture full-throttle passes, rolls, and hard turns.
Inspect gyro noise peaks, D-term oscillation, and P-term overshoot.
Use Blackbox Explorer or PID Toolbox, then re-test.
06 · Optional Paths
Use a Betaflight 5-inch racing or UAV Tech preset as a starting point.
Rotorflight is an alternative, rate-based firmware for experienced pilots.
Keep presets experimental and verify every setting before arming.
Process and safety: Remove props for motor direction or ESC tests. Use a smoke stopper after firmware changes, monitor motor temperature after the first flight, and lower D-gain or increase TPA if motors become dangerously hot.