Prototype 4 Parts List

These are the parts you will need for prototype 4 with recommended links to buy (make sure you get the right ones)
Currently, these are US links, but I will hopefully have UK/EU options later on.

Keep in mind that prices for these parts change a lot, and some of these links are higher quantity, so if you want to reach the $60/pair mark you may need to shop around.

1. b10k ohm Potentiometer (5x per hand)

   • You will also need the nuts that are included with the potentiometers.
   • Green or WL potentiometers are supported.
   • WL (brass) potentiometers:
     • Recommended Amazon Link
     • Recommended Aliexpress Link
   • Green Potentiometers (Smaller and more durable):
     • Recommended Amazon Link
     • Recommended Aliexpress Link (10K Ohm)

2. 9g servo motors for haptics(5x per hand)

   • Make sure they are 180-degree range.
   • MG90S servos are recommended for higher durability
     • Recommended Amazon Link
   • SG90 servos can also be used as a cheaper alternative
     • Recommended Amazon Link
     • Recommended Aliexpress Link

3. ESP32 Dev Board or Arduino (1x per hand)

   • Recommended Board Types:
   • ESP-WROOM-32
     • Recommended Amazon Link
     • Recommended Aliexpress Link
   • ESP32-WROOM-32U (Requires external antenna, but will have more reliable Bluetooth range)
     • Recommended Amazon Link
     • Recommended Aliexpress Link
   • Arduino Nano (No bluetooth)
     • Recommended Amazon Link
     • Recommended Aliexpress Link
     • If not using BT, may need a long USB cable to connect your arduino to your computer if you don't have one

4. Cheap retractable badge reels (for the rotary springs, 5x per hand)

   • Recommended Amazon Link

5. Glove material of your choice.

   • Recommended: Nylon Inspection Gloves (more flexy), Cycling/Golf gloves (stronger, easier to put on)

6. Mounting material

   • Velcro strap for the rigid mount (could add elastic as well), or elastic only

7. Wiring/Connectors/Breadboards as needed.

   • I recommend crimping/using JST connectors, 5 pin JST-XH 2.54mm fit great on the potentiometers.
   • A great first crimper set (optional, sometimes $35)
   • If you're in a pinch you can probably get away with soldering straight to the potentiometers, or using pre-crimped dupont wires from arduino kits.

8. Highly Recommended: A Can of WD-40 to lubricate the potentiometers

   • This makes the pots feel 10x smoother.
   • WD-40 is flammable so spray at your own risk.
   • Potential alternatives: (UNTESTED) Deoxit, Triflow

9. A source of power for the servos

   • Ideally 5v 2+ amps
   • This can be anything from a phone charger brick, to a USB battery, or even 4x AA batteries.
   • If you are using bluetooth you may want to invest in a separate clean source of power for the ESP32 to prevent brownouts.
   • A Personal Favorite Choice (Pack of 2)

10. If using the rigid mount, a nice squishy sheet of foam