Week 16 - Applications and Impplications
aka Hard questions week
Description
For this week we just had to answer a bunch of hard questions. Here they are:
What will it do?
My device, a ferry clock, will tell you in the blink of an eye which ferry is the best to take if you leave now. The clock switches on using a doppler radar when a person approaches it.
Who's done what beforehand?
This is all original work. Altough I did draw design and contruction inspiration from numerous other fab- and maker related projects that I have seen in the last few months.
What will you design?
Everything.
- PCB's
- Casing + wallmount
- Code
- Powermanagement
What materials and components will be used?
- White LED's
- Acrylic plates
- RF1 plates
- solderpaste + solder
- USB cable wires
- ESP32
- various resistors, capacitors, switches and buttons
Where will they come from?
| Amount | Item + Shop link | Price |
|---|---|---|
| 9 | LED COOL WHITE 5000K 80CRI | 0,24 |
| 1 | ESP32-WROOM-32 (8MB) | 4,5 |
| 9 | RES 49.9K OHM 1-4W 1% 1206 SMD | 0,10 |
| 1 | RES 10.0K OHM 1-4W 1% 1206 SMD | 0,10 |
| 1 | CAP CERAMIC 1PF 50V NP0 1206-$0.04200 | 0,31 |
| 2 | CAP CERAMIC 1PF 50V NP0 1206-$0.04200 | 0,28 |
| 1 | IC REG LDO 3.3V 1A SOT223-3 | 0,10 |
| 1 | SWITCH TACT SMD W-GND 160GF | 1,02 |
| 1 | SWITCH SLIDE SPDT 12V 100MA GW- | 1,02 |
| 1 | 2 sided FR1 circuit board | 1,69 (when buying a 25 pack) |
| 3,56m | Recycled Black PLA Filamanet | 0,27 |
The USB cable, Acrylic and screws i found in the lab or in my home. And so should you. The quantities needed are so small that it is better to look for left-overs you can use then to order a whole pane. Also good from a recycling perspective.
If you really want specific colour, try to find a shop that has some samples for you for a small price and use those.
How much will they cost?
Total cost of the project was: €12,63
(+ €6000,- research, making a total of 6012,63)
What parts and systems will be made?
- The casing; a mostly acrylic casing to hold everything together with
- holes for light to shine through
- holes for switches
- hole for power
- holes on the back to approach the rx and tx in case of need for programming
- a 3D printed wall mount plate
- The boards
- A double sided PCB with LED's on one side and the radar + esp32 on the other side
- the electronics
What processes will be used?
- Lasercutting for the case
- 3D printing for the wallmount
- Small milling machine for making the PCB's
- soldering
- Arduino IDE for programming
What questions need to be answered
Is this going to be a self-contained project, or is it going to be wired? One he one hand I like the idea that the project can be made and then left to itself. Using a Real Time Clock and hardcoded time table this is real option. Otherwise future spirals would benefit from a flexible more flexible MCU.
How will it be evaluated?
On the basis of successful integration of the above mentioned techniques. Operationability and cleanliness. With that last part I mean that I want my project to be environmentally as clean as possible; not using parts that are not necessary for its function.Also it should of course help me to arrive on time at the ferry from now on.