When working with others in the community or outside the community

It's always good to share knowledge and help others but sometimes people might not understand what they are asking from you.

It's their project
You do not work for them
You can only be expected to help up to a point, you are not doing their project for them
You get busy and have other obligations
Consider a contribution for your help
The more you help them, the less time you have to spend on your own projects
You might suggest parts but if you did not offer to buy them, then this is their responsibility
Any parts/tools you did buy they should refund you in full
time has a cost, 5 minutes here 5 minutes there, it all adds up
Dont expect to keep quite/sign a Non-disclosure agreement
Dont expect it to work first time :)
No warranty - implied or expressed is given

Helping others