# E-Ink Tamagotchi ## Description Battery-powered e-ink virtual pet handheld with low-power MCU, e-paper display, buttons, USB charging, and firmware support. Vibe-hardwared in 30 minutes. ## Project Details - **Owner:** adriangispert - **Created:** 5/14/2026 - **Last Updated:** 5/14/2026 - **Visibility:** Public - **Power Requirements:** Rechargeable single-cell LiPo battery via JST-PH connector; sized for larger-capacity pack mechanically, charged from USB-C with MCP73831 at conservative ~100mA by default. ## Key Components ### D1 — [USBLC6-2SC6](https://www.flux.ai/cherepanyadima/usblc6-2sc6~4b.md) - Manufacturer Name: STMicroelectronics - Datasheet URL: https://www.st.com/resource/en/datasheet/cd00050750.pdf - Part Type: Diode - Manufacturer Part Number: USBLC6-2SC6 **Pins:** - GND [pin 2] - I/O1_IN [pin 1] - I/O1_OUT [pin 6] - I/O2_IN [pin 3] - I/O2_OUT [pin 4] - VBUS [pin 5] ### D2 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: LED_0603_1608Metric - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### DISP1 — [HTEW0154T8](https://www.flux.ai/vasy_skral/htew0154t8~r3.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://resource.heltec.cn/download/e-ink/154/1.54b%26w/HTEW0154T8_V20/HTEW0154T8_V20.pdf - Purchase Url: https://www.aliexpress.com/item/1005005765133180.html - Manufacturer Part Number: HTEW0154T8 - Manufacturer Name: Chengdu Heltec Automation technology CO., LTD - Product Info Url: https://heltec.org/project/154-e-ink/ - Part Type: Display Device **Pins:** - BUSY [pin 7] - CLK [pin 6] - CS [pin 5] - D/C [pin 3] - GND [pin 2] - SDI [pin 4] - VCC [pin 1] ### J1 — [USB4215-03-A](https://www.flux.ai/adrian95/usb4215-03-a~kg3.md) - Manufacturer Part Number: USB4215-03-A - Manufacturer Name: GCT - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: USB C - Package or Case Code: GCT_USB4215-03-A_REVA - Datasheet URL: https://gct.co/files/specs/usb4215-spec.pdf **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND_A [pin A1_B12] - GND_B [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin SH1] - SHIELD [pin SH4] - SHIELD [pin SH2] - SHIELD [pin SH3] - VBUS_A [pin A4_B9] - VBUS_B [pin B4_A9] ### J2 — [B2B-PH-K-S](https://www.flux.ai/adrian95/b2b-ph-k-s~fx.md) - Manufacturer Name: JST - Part Type: Connector - Manufacturer Part Number: B2B-PH-K-S - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Package or Case Code: JST_B2B-PH-K-S - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW1 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - LCSC Part Number: C720477 - JLCPCB Part Class: Extended Part - Part Type: Tactile Switches - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Manufacturer Name: XUNPU(讯普) - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Manufacturer Part Number: TS-1088-AR02016 **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Manufacturer Name: XUNPU(讯普) - Manufacturer Part Number: TS-1088-AR02016 - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Part Type: Tactile Switches - JLCPCB Part Class: Extended Part - LCSC Part Number: C720477 **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW3 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Manufacturer Part Number: TS-1088-AR02016 - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Manufacturer Name: XUNPU(讯普) - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Part Type: Tactile Switches - LCSC Part Number: C720477 - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW4 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Part Type: Tactile Switches - JLCPCB Part Class: Extended Part - LCSC Part Number: C720477 - Manufacturer Name: XUNPU(讯普) - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Manufacturer Part Number: TS-1088-AR02016 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [ESP32-C3-MINI-1-N4](https://www.flux.ai/adrian95/esp32-c3-mini-1-n4~ufg.md) - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf - Symbol Style: parametric-v1 - Integrated Circuit Type: RF Device - Part Type: Module - Manufacturer Part Number: ESP32-C3-MINI-1-N4 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Espressif **Pins:** - 3V3 [pin 3] - EN [pin 8] - GND [pin 14] - GND [pin 49_5] - GND [pin 48] - GND [pin 52] - GND [pin 45] - GND [pin 2] - GND [pin 49_8] - GND [pin 1] - GND [pin 49_9] - GND [pin 49_2] - GND [pin 53] - GND [pin 49_6] - GND [pin 43] - GND [pin 42] - GND [pin 44] - GND [pin 49_7] - GND [pin 51] - GND [pin 46] - GND [pin 39] - GND [pin 41] - GND [pin 50] - GND [pin 49_3] - GND [pin 11] - GND [pin 38] - GND [pin 40] - GND [pin 37] - GND [pin 49_1] - GND [pin 49_4] - GND [pin 47] - GND [pin 36] - IO0 [pin 12] - IO1 [pin 13] - IO10 [pin 16] - IO18 [pin 26] - IO19 [pin 27] - IO2 [pin 5] - IO3 [pin 6] - IO4 [pin 18] - IO5 [pin 19] - IO6 [pin 20] - IO7 [pin 21] - IO8 [pin 22] - IO9 [pin 23] - NC [pin 32] - NC [pin 15] - NC [pin 34] - NC [pin 4] - NC [pin 29] - NC [pin 33] - NC [pin 17] - NC [pin 25] - NC [pin 10] - NC [pin 9] - NC [pin 24] - NC [pin 28] - NC [pin 7] - NC [pin 35] - RXD0 [pin 30] - TXD0 [pin 31] ### U2 — [MCP73831T-2ATI/OT](https://www.flux.ai/adrian95/mcp73831t-2atiot~46p.md) - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73831-Family-Data-Sheet-DS20001984H.pdf - Manufacturer Name: Microchip Technology - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MCP73831T-2ATI/OT - Part Type: Integrated Circuit **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VDD [pin 4] - VSS [pin 2] ### U3 — [AP2112K-3.3TRG1](https://www.flux.ai/adrian95/ap2112k-33trg1~zlq.md) - Manufacturer Part Number: AP2112K-3.3TRG1 - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2112.pdf - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Diodes Incorporated - Symbol Style: parametric-v1 **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/adriangispert/e-ink-tamagotchi~8m](https://www.flux.ai/adriangispert/e-ink-tamagotchi~8m).* --- *Generated from [https://www.flux.ai/adriangispert/e-ink-tamagotchi~8m](https://www.flux.ai/adriangispert/e-ink-tamagotchi~8m)*