Worlds smallest USABLE 1s dual ESC with or without track mixer.
Posted: Sun Dec 24, 2023 8:59 pm
If you clicked a link from my other threads you are here for UM ESC build.
The 5 channel receiver used in this thread is a Crossover RX-42.xx. Servo ports are Micro JST-SH 1.00mm pitch.
There are two versions of this Ultra Micro ESC
1. Dual ESC with Tank Track mix
2. Dual ESC no mix. This gives you two independent ESC's in a very small package. (Worlds smallest USABLE ESC at this point). Anything smaller would be pretty hard to work with for most RRC hobbyists including myself so we don't care if there is anything smaller as it would not be usable.
Warning! Some Micro JST-SH 3 pin connectors have the +\- swapped. Quick way to tell is, RED wire is in the center is good. Black wire in the center is BAD! This wiring harness shown here powers the receiver through the Micro JST-SH servo ports via the ESC. It is critical that the wiring polarity is correct on the servo port connections else the receiver will be permanently damaged on power up.
THEORY OF OPERATION
This wiring harness has been designed for this particular dual ESC. The thing about it that's different is POWER DISTRIBUTION FROM THE POWER SOURCE. The servo ports YELLOW wires are PPM (Signal x2) outputs to the ESC. The servo ports RED\BLACK wires are SUPPLY VOLTAGE IN to the receiver FROM the ESC.
This design eliminate a seperate power supply connector for the receiver. Also has proper power distribution with the ESC first in line. (least input resistance with respect to voltage supply)
I I have one of these Ultra Micro dual ESC's with mixer in a 1/77 Leopard Tank and getting ready to build up 2 more with wiring harness. I will show the steps involved with that.
I now have two of these ESC' in operation. No.2 is in a 1/72 Tiger 1. These thing work good
I will be building a total of 5 for now.
With this Dual ESC, "independence" means there is no ESC internal mixing. The allows for 2 independent ESCs with no mix. This particular ESC configuration could be used in a Tank with old school "twin stick track control" where both stick moved together up for forward and both sticks down for reverse. Then each track can be run independent from each other allowing manual zero turn maneuvering. This type of control could be used in a RC Bulldozer. Where Radio Control Tanks first came out, this was the control method used. There are other applications for this "independence" mode of operation that I will be discussing in this thread. But for now, on with the wiring of the ESC's.
Oh, you can also use this "independence" type ESC in a RC Tank by using Computer TX mixing. I use Elevon mixing to accomplish this type of track mixing. There are others but Elevon is the most straightforward method in my mind.
Note: I edit posted information here for errors or omissions to keep things as accurate as possible
The 5 channel receiver used in this thread is a Crossover RX-42.xx. Servo ports are Micro JST-SH 1.00mm pitch.
There are two versions of this Ultra Micro ESC
1. Dual ESC with Tank Track mix
2. Dual ESC no mix. This gives you two independent ESC's in a very small package. (Worlds smallest USABLE ESC at this point). Anything smaller would be pretty hard to work with for most RRC hobbyists including myself so we don't care if there is anything smaller as it would not be usable.
Warning! Some Micro JST-SH 3 pin connectors have the +\- swapped. Quick way to tell is, RED wire is in the center is good. Black wire in the center is BAD! This wiring harness shown here powers the receiver through the Micro JST-SH servo ports via the ESC. It is critical that the wiring polarity is correct on the servo port connections else the receiver will be permanently damaged on power up.
THEORY OF OPERATION
This wiring harness has been designed for this particular dual ESC. The thing about it that's different is POWER DISTRIBUTION FROM THE POWER SOURCE. The servo ports YELLOW wires are PPM (Signal x2) outputs to the ESC. The servo ports RED\BLACK wires are SUPPLY VOLTAGE IN to the receiver FROM the ESC.
This design eliminate a seperate power supply connector for the receiver. Also has proper power distribution with the ESC first in line. (least input resistance with respect to voltage supply)
I I have one of these Ultra Micro dual ESC's with mixer in a 1/77 Leopard Tank and getting ready to build up 2 more with wiring harness. I will show the steps involved with that.
I now have two of these ESC' in operation. No.2 is in a 1/72 Tiger 1. These thing work good
I will be building a total of 5 for now.With this Dual ESC, "independence" means there is no ESC internal mixing. The allows for 2 independent ESCs with no mix. This particular ESC configuration could be used in a Tank with old school "twin stick track control" where both stick moved together up for forward and both sticks down for reverse. Then each track can be run independent from each other allowing manual zero turn maneuvering. This type of control could be used in a RC Bulldozer. Where Radio Control Tanks first came out, this was the control method used. There are other applications for this "independence" mode of operation that I will be discussing in this thread. But for now, on with the wiring of the ESC's.
Oh, you can also use this "independence" type ESC in a RC Tank by using Computer TX mixing. I use Elevon mixing to accomplish this type of track mixing. There are others but Elevon is the most straightforward method in my mind.
Note: I edit posted information here for errors or omissions to keep things as accurate as possible