Mini tilt sensor for Arduino and microcontroller boards [sensor]

This is the first proto pcb finished. It's simple. This device detects movement. It only has two components, the tilt sensor, very very sensitive, almost detects when you blow and two connector pins. This prototype pcb has a hole in order to fix it in any surface.

This mini tilt sensor can be connected easily using wires. You can put the sensor close or far from the electronic system. You can connect this to any Arduino or microcontroller board or any other computer system to detect the slightest movement. At rest, the pins are closed (connected). When some movement is detected, the pins are changing opening and closing while movement still active. It can be mounted in any position (omnidirectional). 

Dimensions: 23,2mm (including pins) x 1,2mm. Hole diameter 0,3mm. Cost: 9€.

Making electronic prototypes [recommendation]

This are the first proto pcbs for a mini RF transmiter. The size was relevant. I decided to use smd components. No space wasted. The designer was inexperienced and the initial proto was a failure. Was not possible to mount components. The designer must be really involved in the building process, speaking fluently with the producer company. Any communication error could cause final failure.

At first stages, you must order little quantities to minimize losses. You can order 3-5 units to test solder, enclosing, etc. In the initial steps you must know you are going to spend some money. In order to save it sometimes it's a good idea to order proto pcbs with components soldered. This way you can test them inmediately once you receive it.

Making electronic prototypes [recommendation]

When your are designing a prototype, move slow. If you move quickly sometimes you will find some problems. For example if you are going to put your proto PCB on an enclosure, it's a good idea to choose a box somewhere close to you, buy one unit and then try to fit the pcb on it.

Always work with real models. Order some units of your proto pcbs to phisically test and mount in the real box. Sometimes you will use the first box, sometimes not. When you see it mounted perhaps you will get a new idea about it. Let your mind explore, touch and imagine playing with real models.