I have sat down and had another look at the controller brick idea and decided there were a few improvements needed.
With the connectors coming out on the side the were it put receiver and power switch at the rear where they were vulnerable.
The JST plug was too long and bulky and leaving the whole of the receiver exposed was a further danger.
So I have bought the servo and power connectors out on the other side of the board and replaced the JST connector with two board mounted pins and built the key-way that stops the power being reversed into the case. The receiver is now built in with just a narrow viewing slot for the leds.
Here is the new case lid showing the power and servo plugs.
Here it is with the battery and servo plugged in.
![Image](https://1qfema-db3pap001.files.1drv.com/y4mYNjeXZv802RNA30s87XnW8-XZOPEUJcBtkex_GDbAe3Uul1nXb5tctzNg6lYIo8LMTWvbyoiXL4-PJJpo8V_S1mPc1PhrTT8H9o_kTOaJhssEdFasC6C22vqI20FXS7jJ-4Qh5CENy274oXaQSijygGlPhZkHcT5_bBD4wenDkvvHLBW1GO1uGvzByOx9adHGcFu_YkupZ3ENC0ZAQynyA?width=1080&height=810&cropmode=none)