Open Island

 I used to use a DC DC step down converter to heat up a glow plug, at 1.2-1.4V. I add a switch to control it. It was working, since then, I can use what ever battery I have on hand. It takes 2.26A at 1.2V I did a test, a plug will need about 2A. So, I switch to this kind of DCDC to save volume on car. It does light up the plug on testing, but once on car, it would only start the engine for first few times. After several try, I believe that when glowing a plug on engine, when the fuel goes in to cylinder, it would also take out heat, then I need more current to keep the plug glow. if I power it at 1.4V, it will be 2.8A, when you blow on the glow, it goes up to 4A googling around, I cross to find out that a RC glow plug is about 5W, and there are some on board glower is only using a mosfet to switch power source, An example of arduino for 9 glow: http://philsradial.blogspot.com/2013/02/glowplug-driver.html I wish to power glow drive and the starter motor with same 2s life battery, so the

 I have an old sanwa car controller, it old but in good Sharpe. I want to convert it to modern 2.4G or LRS, since old AM/FM could be triky these days, when all your analog parts are 20years old. There is only one main chip on PCB, it's OKI  L9362... you can still find the scanned version of datasheet... it takes 4 VR cahnnels into PPM out put... supply voltage range is 6-13V... It has a internal regulator, so the out put is 3.8V... Referencing to data sheet, I power the board with 10V, and take the out put signal with scope. I do get 2 channels. first slot is steeling Here is the back side of th IC, the red V is Vcc, the blue V is Vref(3.8V, where VR is connected to).  The you have channel 1 and channel2, the channel 3 and 4 are bounded, but not grounded. Today, with arduino, it's quite easy to read out the PPM with this library: https://github.com/dimag0g/PPM-reader it use interrupt so, no delay on your system, and can pretty mature. now, the question is: what RF  to use? Ther