18. Project Development¶
What tasks have been completed?¶
completed¶
- housing for the puck
- pcb/electronics of the puck
- pcb/electronics of the sending station
- housing of the sender → todo
- sender code
- receiver code
- html interface website
remaining¶
- charging the batteries
- charging station and holder for pucks while recharging
- milling the mold for epoxy Casting
- casting more Pucks :-)
What’s working? What’s not?¶
things that work¶
- electronics and code work.
- interface works
- housing is fine
things that need re-work¶
- sender housing needs rework
- silicone bumpers need small adjustments
What questions need to be resolved?¶
- how sturdy will they be in real life use?
- how long will the actual lora range be in a venue?
- how long will the batteries last?
What will happen when?¶
I made a backplanning in the week 16
I got to around half of the 4th spiral in my plan this time. The last steps will be for after the presentation.
Spiral 1 :
- try our esp and Lora, bleutooth to decide what to use in the boards.
- build basic code
Spiral 2 :
- test lora and code on wemos D1 boards and arduino.
- start building web interface
- start 3D design for pucks
- start kicad board design
Spiral 3 :
- mill pcb’s and solder them
- 3D print puck housing and test fit
- Look into materials for final pucks or method of producing
- look into system to wireless charge the pucks
Spiral 4 :
- finalize sender code and webpage
- design and make mold to cast rubber bumper
- cast silicone bumper
- finalize receiver code
- finalize puck housing
- design and build sender housing, laser cut out of plywood or acrylic
Spiral 5:
- make mold to cast pucks in epoxy
- cast pucks
- design and make wireless charging station
what have you learned?¶
- always account for things to go wrong when you least expect it!
- batteries die faster than you think!
- I got much more insight in making my own electronics
What processes were used?¶
- 3d design and 3D printing
- silicone mold making
- epoxy casting
- pcb design and milling
- electronics soldering
- embedded programming
- network programming
- interface programming
- 2d design and laser cutting
Bill of materials¶
| material | suppliers | price |
|---|---|---|
| pcb blanks | Rs components/ pollin electronic | 6 euro |
| Pla filament | Trideus | 20euro/spool |
| silicone | Voss chemie | 219 euro/10kg |
| epoxy | Voss chemie | 14 euro/500gr |
| birch plywood | hannsens hout | 15 euro/sheet |
| electronic components PUCK: | ||
| vibration motor | recycled | 0 |
| Neopixel | banggood | 1€ |
| lora module | amazon | € 13,49 |
| tiny1614 | Rs components | 0,5 € |
| 3V regulator | Rs components | 0,3 |
| transistor MMBTA14 | Rs components | 0,083 |
| resistors | Rs components | 0,06 |
| capacitors | Rs components | 0,2 |
| led | Rs components | 0,2 |
| headerpins | Rs components | 0.5 |
| electronic components SENDER: | ||
| esp8622 12E | amazon | 4€ |
| switch | Rs components | 0,6 |
| button | Rs components | 0,6 |
| neopixel?? | banggood | |
| 3V regulator | Rs components | 0,3 |
| resistors | Rs components | 0,06 |
| capacitors | Rs components | 0,2 |
| led | Rs components | 0,2 |
| headerpins | Rs components | 0.5 |
| lora module | amazon | € 13,49 |
| 3.7V lipo battery | amazon | 10 €/piece |
Last update: June 8, 2021