Monthly Archives: February 2017

The type of ESC and Tattu ESC

How many ESC (electronic speed controller) types? Maybe you have been confused by this question. Today we will help you to clearly know more about ESC.

1. ESC types

#1 Brushed and brushless

For base on motor, which can be divided into brushed and brushless. It according to the control signal to adjust the speed of the motor.

For their connection, usually goes like this:
- The ESC input line connected to the battery;
- The output of the ESC line (brushed have two lines, brushless have three lines) connected to the motor;
- ESC signal lines connected to the receiver.

What’s the difference between brushed and brushless ESC?

Brushed Motor and Brushless Motor is like Hub and Switch in Computer Network. Brushed Motor is just a normal motor where it work by direct current/voltage (We only focusing in DC area. NO AC Motor)

#2 Blheli, simonk and kiss firmware

ESC program is divided into open source and not open source, For base on open source firmware, there are 3 main types of firmware that you can get on your ESC, which can be divided into blheli, simonk and kiss firmware.

#3 BEC and UBEC

BEC stands for Battery Elimination Circuit. In practice, this simply means that ESCs with a BEC are able to output a constant voltage and so power the equipment on board your flying platform, such as your receiver, servos or flight controller. Delivers power for your Rx and servos at ~5v (but usually no more than 2A-3A).

UBEC stands for universal BEC or sometimes ultimate BEC, which is typically a switch mode unit which is capable of reducing the voltage from 4s+ packs to the required ~5v, and can deliver as much as 10A to power many, big, digital servos and your Rx.

2. What type of ESC do quadcopters use?

BLHeli is the most common firmware being run on multirotor ESCs today. It’s popularity is pushed further by support for what is called “BLHeli passthrough” built into any CleanFlight based flight controllers. What this allows you to do is to program and update all of your multirotors ESCs from the computer connection to the flight controller.

For BEC or UBEC, you really need to make sure which one you have or are buying if your goal is to have the better switching mode instead of the more problematic linear mode type BEC. Like a lot of things in RC, you have to study the words and numbers a little (types, input voltages, output voltages, ratings, etc.) to make sure you get what you need.

Brushless motors are typically 85 – 90% efficient or more, higher efficiencies for a brushless electric motor, of up to 96.5%, whereas DC motors with brushgear are typically 75 – 80% efficient. Brushless DC motors are commonly used where precise speed control is necessary. So base on the brushless motors, you should have to choose the matching ESC, which also is brushless ESC.

About Tattu 30amp ESC brushless Blheli

Tattu ESC Specifications

- Firmware: BLHeli_S V16.6 A-H-20
- Max continuous load: 30 amps
- Burst Current: 40A / 10sec
- Lipo Cells: 2 to 4 cells
- MCU: SILABS EFM8BB2 48MHz
- BEC: No
- Weight: 3.6g (board) 6.5g (total with wires and connectors)
- PCB size: 26mm L*14.5mm W
- ESC height: 6mm
- Signal wire: 150mm
- Power wire: 100mm

Suppot regular 1-2ms pulse width input, as well as Oneshot125 (125-250us), Oneshot42 (41.7-83.3us), Multshot(5-25us), Dshot150, Dshot 300 and even Dshot600and automatically detected by the ESC. High quality N-FET, half-bridge drive and PCB specialized for cooling, only flashed with BLHeli_S firmware.

Source: http://www.genstattu.com/blog/what-the-type-of-esc/

Do you know about Grepow Company?

Inheriting 20 years of superb battery workmanship, Grepow has been always upholding the idea of high class and quality optimization in production. With outstanding pairing process, safe and reliable raw materials formula, steady and smooth discharge curve, rigorous quality control system, advanced automation equipment, research and development of cutting-edge technology and innovation of workmanship from over 200 people high end professional engineering team, Grepow is the only professional high power battery manufacturer in china that can produce NIMH, Li-PO, LI-FE batteries simultaneously yet maintaining very high standard within the industry. Grepow product is being sold to more than 60 countries around the world. The company has also set up its U.S and German Subsidiary.

The two brands Geshi ACE and Gensace were launched against domestic and overseas RC model markets, and have received a huge amount of responses. They have became very well known brands among RC model fans both domestic and abroad. Geshi ACE and Gensace have been always maintaining the very fine quality and have also gained a very good reputation. With their safe and reliable raw materials formula, advanced production process and rigorous quality control system, Geshi ACE and Gensace have made the batteries that are beloved by many RC model fans. The RC heli/airplane batteries are famous for its high capacity, long flying time, steady performance, outstanding aero shooting results, rarely puffing up and good cycling performance; while the RC cars batteries are showing off its brave, fearless character with its high C rate, super low internal resistance, high explosive strength and strong power during races.

Tattu has been launched few years ago in order to meet the market’s need. It can be separated into Tattu UAV battery and Tattu FPV battery lines. Tattu UAV batteries are industrial made specifically work for UAVs. It overturns the concept of RC models, and it precisely meets the need of UAV flight. It is a high-end UAV battery line that was recognized by the UAV industry once it was launched. Tattu FPV battery line is aiming at providing batteries that are more suitable for FPV racing. Tattu FPV battery come with super high C rate, high explosive power, very strong power drive, safe and reliable features. It was quickly become famous among both domestic and overseas market. It is the first choice and most-recommend to FPV pilots all around the world.

The article source: http://www.genstattu.com/blog/do-you-know-about-grepow-company/