
EinkPDA keyboard
TalismanDesign/PocketMage_PDA
An E-Ink PDA device using the ESP32 S3.

Repository for the NeuroBytes Interneuron by NeuroTinker.
NeuroBytes Interneuron is an open-source printed circuit board by NeuroTinker, from the NeuroTinker/NeuroBytes_Interneuron repository on GitHub. It is a 2-layer board of 58.4 × 25.1 mm with 31 parts on 38 nets, routed with 382 tracks and 45 vias.
It is built around the MMBT3904. Its parts include 8 connectors, 7 resistors, 5 capacitors, 3 transistors and 2 ICs. It belongs with the STM32 boards of this library.
The Interneuron is an open-source hardware neuron simulator designed and sold by NeuroTinker, LLC. Each device includes a number of inputs (dendrites) and outputs (the axon terminal) that can be freely connected to other NeuroBytes boards using 4-pin 'neurotransmitter' cables. Interneurons use a single RGB LED to indicate current status, and include a side-mounted push button for network identification.
All NeuroBytes products are based on the ST32L0x series of ARM Cortex-M0+ 32-bit microcontrollers. The boards were designed in KiCad and Inkscape and are released under the terms of the Creative Commons Attribution-ShareAlike 4.0 license, available here: http://creativecommons.org/licenses/by-sa/4.0/. The NeuroBytes Interneuron is Certified Open Source Hardware as defined by OSHWA, certification number US000113.
This repository is a continuation of the 8-bit ATtiny design called NeuroBytes v0.91. The two series are not compatible.
This project is in alpha. The firmware is in progress and the API may change at any time. The PCB design is physically tested but has not yet been manufactured at scale.
The NeuroBytes GitHub repositories store engineering information and make the design history of the project available to the public. Hardware- and firmware-specific README.md files can be found in their appropriate subdirectories.
We encourage community involvement in our efforts, keeping in mind that hardware availability is currently quite limited. For product availability, operating guidelines, curricula, and information about NeuroTinker, LLC, head to neurotinker.com. Further technical logs are also at https://hackaday.io/project/3339-neurobytes.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | JST GH 4-POS | KiCad_Footprints:ZF_CONN_JST_GH | P1, P2, P3, P4, P5, P6, P7 |
| 3 | 1k | KiCad_Footprints:ZF_SMD_NonPol_0402 | R5, R6, R7 |
| 3 | MMBT3904 | KiCad_Footprints:ZF_SOT23-3L | Q1, Q2, Q3 |
| 2 | 0u1 | KiCad_Footprints:ZF_SMD_NonPol_0402_cap | C3, C5 |
| 2 | 100 | KiCad_Footprints:ZF_SMD_NonPol_0402 | R2, R3 |
| 2 | 1u0 | Capacitors_SMD:C_0603_HandSoldering | C1, C4 |
| 1 | 10u | KiCad_Footprints:ZF_SMD_nonpol_1206 | C2 |
| 1 | 150 | KiCad_Footprints:ZF_SMD_NonPol_0402 | R1 |
| 1 | JMP | KiCad_Footprints:ZF_SMD_NonPol_0402 | R4 |
| 1 | JST_GH_5-pos | KiCad_Footprints:ZF_CONN_JST_GH_5POS | P8 |
| 1 | LED_RABG | KiCad_Footprints:ZF_LED_RGB_SunLED_XZMDKCBDDG45S-9_cast | D1 |
| 1 | LOGO | KiCad_Footprints:ZF_LOGO_OSHW | G*** |
| 1 | LOGO | KiCad_Footprints:ZF_LOGO_Interneuron | G*** |
| 1 | STM32L011Gx | KiCad_Footprints:ZF_IC_UFQFPN28-050 | U1 |
| 1 | SW_PUSH_TL3330AF130QG | KiCad_Footprints:ZF_SW_Momentary_SideMtg | SW1 |
| 1 | TLV702 | KiCad_Footprints:ZF_SOT23-5L | U2 |
The 29 most common of 31 parts.
It measures 58.4 × 25.1 mm and has 2 copper layers, 1.6 mm thick.
31 parts, built around the MMBT3904. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the NeuroTinker/NeuroBytes_Interneuron repository on GitHub, at the commit this page was made from: the board is HARDWARE/NeuroBytes_Interneuron.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask NeuroTinker before reusing the design.

TalismanDesign/PocketMage_PDA
An E-Ink PDA device using the ESP32 S3.

fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io



iMike78/nest-mini-drop-in-pcb
Drop-in PCB replacement for the Google Nest Mini v2 with ESP32-S3, ESP32-P4 and optional ESP32-C6. Inspired by Onju Voice and Home Assistant Voice PE.

ohmtech-rdi/eurorack-blocks
Software to Hardware Prototyping for Eurorack using C++, Max/Gen~ or Faust

Bellafaire/ESP32-Smart-Watch
An open source smartwatch based on the ESP32 compatible with the Arduino IDE.

AndersBNielsen/Relatively-Universal-ROM-Programmer
Hardware to program W27C512 EEPROM or any 24/28/32 pin ROM requiring from 5V to 27V programming voltage.