Sambar Powder - Moms recipe

Few of my friends were asking for Sambar Powder recipe. Here it is, Mom's way of doing it.
I havent tried it myself, as always mom makes and give it for me till now.. :)

Ingredients:-
Varali Manjal/ Long Turmeric pieces - 50 gms
Dhaniya/Coriander seeds - 250 gms
Red Chilli - 250 gms
Methi - 100 gms
Channa Dal - 100 gms
Tur Dal - 100 gms

-Substitute turmeric powder if you cannot get the long pieces.
- Ideally mom will sun dry all the ingredients for one day and give it to mill and grind it to fine powder.
If thats not possible,
-Heat a tava very well, fry all the ingredients one by one seperately, just to give some heat to them. Grind to fine powder. Store in air tight container