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FingerTech tinyESC v2
FingerTech tinyESC v2
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  • Description
  • Specifications
  • Operation
  • Videos
  • CAD Files
  • Reviews
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Wiring Diagram


These are the smallest and lightest motor controllers currently manufactured for RC hobby robotics. They take up very little space but can handle more than enough motor current for your robots.
Version 2.4 now includes backwards-polarity protection - plugging a battery in backwards will not destroy a tinyESC! There is also now protection on the 5V receiver line so that other BECs will not affect the tinyESC - no need to disconnect the red wire anymore!

Features:
- Bi-directional brushed motor controller.
- Ultra-compact and lightweight.
- Undervoltage, overcurrent, overtemp reverse-polarity, and BEC protection.
- Internal BEC (battery eliminator circuit) provides 5V to receiver - no extra receiver battery required!
- Calibrate function allows precision driving.
- Status LEDs for both directions and calibration.

*The tinyESC includes a Battery Eliminator Circuit. If there is no 5V supply present on the robot, this will power the radio receiver from the main battery.  (There is a blocking diode in v2.4, so multiple tinyESC BECs can be run at once, along with one non-tinyESC BEC.  It is still not recommend to run multiple unprotected BECs together.)
*If you are controlling the tinyESC from a powered device (like Arduino, etc), there is now (v2.4) no worry about damaging the tinyESC from higher voltages.
*Includes 0.01uF capacitor.  Solder between motor leads to filter motor noise and voltage spikes.  (Not required for FingerTech Spark motors - they are high quality and do not generate dangerous voltage spikes.)


SERVO Magazine Reviews:
SERVO-2010-12-tinyESC-review.pdf
SERVO-2014-11-tinyESCv2.4-review.pdf


Specifications:
Battery Voltage: 6.5V - 36V
Motor Current: 1.5A continuous (forever).  For robots, usable continuous current is 2.0A.
Max Current: 3A.  For robots though, 5A-stall motors are easily handled by tinyESCs (see Videos tab).
BEC Output: 5V, 100mA (can run other electronics like receivers and other ESCs, but not motors or servos.)
BEC current is reduced for voltage above 8V - see graph: BEC Derating Graph.

Dimensions:
Circuit board size: 1.27x1.27x0.41cm (0.5x0.5x0.16”)
Outer heatshrink size: 1.35x1.85x0.48cm (0.53x0.73x0.19”) - calibration pins have been changed from male to female (v2.4) to reduce length and fragility
Weight with wires: 4.5grams (0.16oz)

Currently there are three two known ways to destroy a tinyESC. (So avoid them!) 
  1) Reverse battery voltage.  Not anymore!
  2) Applying battery voltage to the motor outputs. 
  3) Voltage spikes from noisy motors (not using the included capacitor).
      FingerTech Spark motors are not noisy and do not need the capacitor.
Operation -

R/C Stick
Arduino Pulse
Motor Output
LED status
Full Forward
2000µs
Full Forward
Solid Green
Forward
1510-2000µs
Forward
Flashing Green
Centered
1500µs
(+/-10µs deadband)
Off
Either LED Could Flash
Backward
1000-1490µs
Backward
Flashing Red
Full Backward
1000µs
Full Backward
Solid Red
No R/C Signal
No Pulse Stream
Off (Failsafe)
Slow Blinking Red

Calibration - The tinyESC comes pre-calibrated with defaults that match the 1000-1500-2000µs of most radios, but if you wish to change the limits or center position:
1) Plug tinyESC into unpowered radio receiver.
2) Jumper the two tinyESC Calibrate pins with any piece of wire. (see image
3) Power up tinyESC. 
4) Move transmitter stick to high and low limits.
5) Return transmitter stick to center.
6) Remove the jumper. 
    The center position is now “motor off” with full forward and full reverse speeds at the upper and lower limits.
*You may calibrate multiple tinyESCs at once (as in channel mixing).

Reset to Defaults
- To revert to default calibration, do the above steps without moving the transmitter stick at all.

Note for Spektrum users: The Spektrum transmitters do an odd thing with their mixing.  If your motors only run full speed when the stick is in a corner (meaning going straight ahead/reverse is *not* full speed), then you will want to calibrate the tinyESC just like the directions above, but make sure you only move the stick straight up and straight down, not moving the stick sideways at all.  This will give you full speed for forward and reverse!

Is one motor faster than the other?: When calibrating the faster motor, also move the trim on the transmitter up (when you move the stick to the maximum) and down (when you move the stick to the minimum). Recenter the trim lever, center the stick and remove the calibrate jumper. This will limit the top speed of that motor. You may have to try different amounts of trim to get the motors to behave exactly the same.

The videos below show a tinyESC running a powerful 22mm diameter motor that draws over 5A stall at 12V.
On the left is 11.1V operation and on the right is 14.8V operation.
- At 11.1V, the tinyESC runs at full power even with over 2.3kg (5lbs) of weight on the wheel. 
- At 14.8V, it takes 2.3kg (5lbs) before overcurrent protection kicks in.  (Remember, that's 5lb per wheel!)

    

 
14 Product Reviews - Average rating 5 / 5 (Show All)

Click to review this product

With you for life!

- 10th January 2014

I just wanted to post that I bought my first two tinyESCs years ago (like 2010) and they have been in a number of bots and are about the only thing that just keeps working! (I have burned through multiple other ESCs in that time!)
Keep up the good work FingerTech!


Tiny ESCs in a 6lber?!

- 22nd August 2013

At the 2013 PA Bot Blast I saw a pair of TinyESCs running a pair of Kitbots.com "1000 RPM motors" in a the 6 pound robot Precipitor. The wheel size was 1.5 inches and I think the battery was a 3 cell Lipo. While the robot didn't do any pushing, the controllers were still working through a full fight: http://youtu.be/J02_8R8-iGo

I would buy them if I build a beetle or ant. No question.


Great product

- 30th July 2012

I really like these speed controllers for both my 1 lb and 150 gram robots. They work great and they're really compact.

Perfect!

- 25th September 2011

I used the tinyESCs on my recent antweights and they worked flawlessly in both of my robots. I couldn't of asked for anything more out these guys. They are by far the smallest esc's you can get for your flea or ant weight. I am very happy with them and plan on using them on my next small robot!

Well thought out.

- 21st May 2011

When constructing my first ant I was left with the choice of hacking a larger speed control from another company apart and resoldering it or simply plugging in and soldering up the tinyESC. well the choice was obvious and today after a full competition and random off season shenanigans the tinyESC hasn't ever let me down finally someone released a speed control with auto-cutoff and overload protection!

The Perfect ESCs for 150g 'Bots

- 28th February 2010

The tinyESC is one of the best options for small bots. In the fairy weight class, having a compact and dense construction are essential to fitting the most power possible into such a small weight. The tinyESC is the most reliable speed controller I've found of such a small size and weight, and has been used successfully in both MH Robotics fairies.

In Mango Farmer (seen here- http://www.youtube.com/watch?v=sUn1mdaxci8), with the tinyESCs, enough weight and space was saved compared to using a pair of old soz boards that there was enough space in the bot for a relatively massive 15 gram magnet, allowing it to easily dominate the competition in steel floored arenas.


Click to review this product

FingerTech "Gold Spark" 16mm GearmotorFingerTech "Gold Spark" 16mm Gearmotor - 19.05 CAD
FingerTech's Gold Spark motors are great for hobby use and in competition robots such as mini-sumo and line following.  If your application will be close to or exceeding the torque limits listed below, check out our Silver Spark motors.

• The extra-long 3mm shaft is triple-supported internally so that wheels can be mounted directly.
• All-metal spur gear reduction gearhead mated to a Mabuchi FK-050 motor.
• 9 different gear ratios for a wide range of rpm and torque to choose from (see details).
• Only 28grams (0.99oz).

FingerTech "Silver Spark" 16mm GearmotorFingerTech "Silver Spark" 16mm Gearmotor - 23.81 CAD
The new Silver Spark line of motors has the same 16mm diameter as the Gold Sparks, but the gears are a larger pitch. This means less worrying about stripping teeth in your bigger or heavier applications!

• Extra-long 3mm shaft for mounting wheels directly with the option to use a bearing block for support on the wheel's far side.
• Same 11mm face mount pattern as Gold Spark motors.
• All-metal spur gearhead mated to a Mabuchi FK-050 motor.
• 9 different gear ratios for a wide range of rpm and torque to choose from.  One twice as fast, and one twice as slow as the Gold Sparks!
• Weights from 28 - 32grams (0.99 - 1.13oz). (see details)

FingerTech Mini Terminal Block (pair)FingerTech Mini Terminal Block (pair) - 6.19 CAD
• When you don't want to solder every wire connection, these push-wire terminal blocks are a convenient solution. 
• Easily connect and disconnect up to four 18ga wires to a common connection point.
• Includes one red and one black terminal block for positive and negative (ground) connections.

JST Connector (Female)JST Connector (Female) - 0.95 CAD
• 2-Pin JST-style female connector.
• Wires are 20 gauge, 10cm (4in) long.  12cm including connector housing.
• High quality, high strand count silicon wire used gives higher amp throughput than standard wire of the same diameter. Connectors are plated for greater amp handling.

 
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Price: 34.29 CAD
30.45 USD 24.51 EUR

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