Bill of Materials
=================

All the parts are available on eBay and AliExpress. In total, budget around
**$100** for the necessary components.

.. list-table::
   :header-rows: 1
   :widths: 28 52 20

   * - Part
     - Notes
     - Link
   * - ESP32 NodeMCU dev board
     - Any "normal" ESP32 dev board should do the job. A Waveshare ESP32 driver
       board is also supported (see :doc:`hardware/wiring`).
     - `Example <https://web.archive.org/web/20231202141343/https://www.berrybase.de/en/esp32-nodemcu-development-board>`__
   * - DC-DC step-up boost converter (LM2587S, 5 V → 12 V)
     - Powers the coin acceptor, which runs on 12 V.
     - `Example <https://de.aliexpress.com/item/32834930982.html>`__
   * - Waveshare 1.54" e-Paper display module (SPI)
     - 1.54" is the reference display; 2.13" and 2.7" are also supported in
       firmware.
     - `Example <https://www.waveshare.com/1.54inch-e-paper-module.htm>`__
   * - Programmable coin acceptor (HX-616), 6-coin
     - Pulse-based output; programmed to recognise your coins (see
       :doc:`hardware/coin-acceptor`).
     - `Example <https://de.aliexpress.com/item/1005005203759184.html>`__
   * - 10 mm metal push button with yellow LED (3–6 V)
     - Self-reset momentary switch, used to trigger the withdrawal.
     - `Example <https://de.aliexpress.com/item/1005004527235094.html>`__
   * - USB Type-C socket
     - To plug in the power supply (a Raspberry Pi Type-C PSU works well).
     - `Example <https://de.aliexpress.com/item/1005005347655323.html>`__
   * - MOSFET module ("15A 400W MOS FET Trigger")
     - Used to block/enable the coin acceptor at the right moments.
     - `Example <https://de.aliexpress.com/item/33038160184.html>`__
   * - Orange PLA filament
     - For the 3D-printed case (see :doc:`3d-printing/index`).
     - `Example <https://us.polymaker.com/products/polylite-pla>`__
   * - Jumper wires
     - For wiring everything together.
     - `Example <https://de.aliexpress.com/item/1005005945668553.html>`__
   * - Heat-set threaded inserts, M3
     - To mount the coin acceptor inside the printed case (M2.5 also used for a
       Raspberry-Pi mount — see :doc:`3d-printing/index`).
     - `Example <https://www.prusa3d.com/product/threaded-inserts-m3-standard-100-pcs/>`__

.. note::

   Links point to representative products and may go out of stock over time. Any
   equivalent component will work.