About
Last month on early April 2021 i've manage to bought a latest Orlandoo's new small size factor integrated ESC (TS0002-B 5A 2S) board to be used on my 1:35 scale Orlandoo OH35P01 F-150 truck. The F-150 previously have the older TS0001 integrated ESC board but i've removed it to be used on my other micro RC car projects which left F-150 empty until i can find a replacement which unexpectedly a new TS0002. I bought the TS0002 integrated ESC because it seems to have the same specification as shown on store front with an advantages of being smaller, compact and lighter than older TS0001 board. Note that before i installed TS0002-B ESC board on OH35P01 F-150 chassis i've removed all those bulky connectors, plugs/connectors and wires to bare naked board so i could reduce weight by directly soldering proper connection. This give a good clean and lightweight builds......my standard build as usual. However there's one problem that i'm going to discuss next.
TS0002-B integrated ESC board specification as stated by vendor:
- Item Brand: Orlandoo hunter
- Item Number: TS0002-B
- Item Name: 5A brushed esc speed controller
- Product Size: About 19X12mm
- Product Weight: Approx.10g
- Compatible Model: Orlandoo hunter 1/32 and 1/35 rc car vehicles models
- Recommended Motor: Orlandoo hunter B series motor are all suitable
- Working Voltage: 4.8V-9.6V
- Signal Type: PWM
- Signal Range: 1ms-2ms
- Drive Frequency: 250Hz
- Output Current: 5A
- BEC: 4.8-9.6V working voltage, input current is 5A
* Extra note: ORLANDOO releases two variants of TS0002 board:
- TS0002 (With normal JST RCY power and motor connector plug)
- TS0002-B (With compact JST PH2.0 power and motor connector plug)
The Problem
Now the issues is on any store front that sells these TS0002 series ESC board they did not mention how much voltage output it will put out on the board through the servo port output voltage pin. Usually they will mention BEC output via CH2 port up to max 4.8V to the receiver which is a normal standard output voltage to use on any R/C hardware onboard especially on the radio receiver unit.
First time when i installed the TS0002-B integrated 
ESC board and soldered connection in place on my ORLANDOO OH35P01 F-150 truck all the throttle, lights and servo was working very well for a few seconds. Half minutes later the steering servo seems to move very jagged and then stalled for quite sometimes. Upon inspection the ESC board, the black Mosfet like chip near by the servo port seems generate lots of heat. Further when checking the steering servo i notice the servo plastic casing that houses the steering motor seems to distort and melted away...way too hot to touch. After lots of troubleshooting checking for steering binding and other possibilities that may cause any unwanted load friction or stresses causing the servo to overheat and fail i couldn't pin point the sources. Before the ESC replacement the F-150 steering operate smooth and flawlessly on older TS0001 integrated ESC board. Extra note that unlike the servo installed on all my other of my ORLANDOO truck only OH35P01 F-150 uses quite different servo; its much smaller than standard, narrower mount on the steering axle and uses much lower voltage rated below 4.2v than the ones found on Jeep, Pajero or Defender series. Below is the servo specification used on the OH35P01 F-150 truck:
Servo specification:
- Model: AS0017 Orlandoo 1.7g Low Voltage Micro Servo
- Dimensions: 14mm x 6.2mm x 17.9mm
- Speed: 0.06s/60° @ 2.8V, 0.05s/60° @ 3.7V
- Torque: 0.06Kg/2.8V, 0.075Kg/3.7V
- Gears: Plastic
- Plug: mini JST
- Operating Voltage: 2.8V – 4.2V (No more than 4.2 V, or be damaged)
- Weight: 1.7g
* Note: This servo only fits on narrower servo on axle mounting for OH35P01 model only. Will not fit on later ORLANDOO model series.
Further troubleshooting to narrow down the problem i've manage to transfer the TS0002-B integrated ESC board to be used other model on my OH32A03 DEFENDER it seems to worked flawlessly with no servo overheating after some runs on my crawler track. I guess it has something to do with incompatible servos. OH32A03 DEFENDER originally uses the old TS0001 integrated ESC board but i decided to pull it out and installed it on OH35P01 F-150 chassis. The burned servo on the F-150 have been replace with newer version of 1.7g Low Voltage Micro Servo i bought online however the back side of the servo looks different with exposed motor back end....however the fitting was just right and voltage still rated below 4.2v. When running the TS0001 ESC on the low voltage servo it seems to run smooth and perfectly as usual, no overheating and run flawlessly on my rock crawler track for few hours.
The culprit ...do not use TS0002 on low voltage servo
Since manage i've narrow down the problem i've decided to test both TS0001 and TS0002 ESC board using 'Voltage Multimeter' testing tool to test the servo voltage output pin on the board to see if there's any differences between them. After some test measurement my curiosity was spot on, the differences of voltage output through servo ports (- and +) between two boards was very significant:
-
TS0001 onboard servo output port/pins pump out a constant low voltage at 3.8V constant.
Snapshot below:
-
TS0002 onboard servo output port/pins pump out a constant low voltage at 4.5V constant.
Ssnapshot below:
The voltage power output differences is shockingly huge which is why my low voltage servo rated between 2.8v to max 4.2v the AS0017 was failing due to over voltage from the main TS0002 over voltage through servo port. So the older board the TS0001 was the ideal match to run on any low voltage servo on these models.
Solution & Conclusion
I see no fault from using the TS0002/TS0002-B integrated ESC board on ORLANDOO models or any micro size models but strictly it should not be use on popular low voltage servo rated below 4.2V such as the AS0017 or compatible low voltage servo. Manufacturer or seller should have gave warning to customer/owner of OH35P01 F-150 chassis to stay away from using incompatible ESC unit. I think partly the overall problem are the seller and the manufacturer should have mentioned the actual voltage output on the servo pin out in the documentation and manual so buyer knows which one to choose right for their R/C hardware full compatibilities especially micro models that are very sensitive to voltage differences on servos. As for me i still love the compact size of TS0002 ESC which is now runs actively on OH32A03 DEFENDER. More likely to get some for my other micro project but with caution choices on compatible servo.
Related article & community
Here are list of article and links related to the above model.
- Product review: Orlandoo Hunter OH32A03 1:32 scale DEFENDER 4x4 micro crawler
- Product review: Orlandoo OH32A02 1:32 scale 4x4 PAJERO micro crawler
- Product review: Orlandoo OH35A01 1:35 scale 4x4 Jeep micro crawler
- Product review: Orlandoo OH35P01 1:35 scale 4x4 F-150 micro crawler
