Arthur Jordan's repositories
LORA-QWERTY-Communicator
A tidy and feature-packed LORA QWERTY communication device based on a Blackberry Q10 keyboard, a nRF52840 and a 2.7'' Sharp Memory LCD
Retina-Display-eDP-Adapter-For-UP-Board
This project contains the design files for an eDP adapter and backlight driver for ipad 3 retina displays. A .brd file for a connector for CN31 is included too which can be manufactured by OSH Park flex service and costs next to nothing.
SMA-Q2_replacement_board
SMA-Q2_replacement_board
SMA-Q2_replacement_board_v2
Different version of the SMA-Q2 smartwatch replacement board
LoRa-BLE-Relay-v2
second version of the nRF52840 and SX126x-based communication device intended to run Meshtastic
SX1262-LoRa-BLE-Relay
A LoRa to BLE relay in 2 versions based on the new SX1262 chipset and an nRF52840. It can run Meshtastic already
SMA-Q2-Firmware-3
3rd take on the ultimate open source smartwatch project
2-Channel-Biopotential-Amp
A small general purpose biopotential amplifier for ECG/EEG/EMG measurements. Connects to any ADC.
SMA-Q2-nrf52840-dualMode-firmware
SMA-Q2-nrf52840-dualMode-firmware
ZeroWatch-v1.1
Replacement board for a cheap chinese U8/U80 watch.
PulseSensor-for-SMA-Q2
The Pulse Sensor from https://pulsesensor.com re-designed to be made on a tiny flex PCB to replace the HR sensor of the SMA-Q2 watch.
ColorMemLCD
Arduino library for the LPM013M126A 176x176 Japan Display Color memory LCD found inside the SMA-Q2 / SMA-TIME smartwatch.
SMA-Q2-Arduino
Arduino test firmware for the SMA-Q2 Smartwatch
nrf52840-breakout
nrf52840 breakout board
nRF52832-Breakout
breakout board for the CDSENET E73-2G4M04S1B module
Sharp-Memory-Display-Breakout
Breakout for the AYF531035A 10pin 0.5mm pitch connector which mates with the Shar Memory Displays and also the good old LPM013M126A
SMA-Q2-Firmware-2
SMA-Q2 Firmware 2 based on the Sandeep Mistry Arduino Core or its Implementation in Aaron Christophel's portable Arduino IDE as uploaded here: https://www.youtube.com/redirect?redir_token=KBI_47xkebyV8zz_y1ZDXYYTUBF8MTU2OTA3MDI3N0AxNTY4OTgzODc3&event=video_description&v=3gjmEdEDJ5A&q=http%3A%2F%2Fatcnetz.de%2Fdownloads%2FD6Arduino.rar
TPS63001-Minimodule
Small breakout for the TPS63001 - a 1.8-5.5V in and 3.3V out buck boost converter by TI
Adafruit-ST7735-Library
This is a library for the Adafruit 1.8" SPI display http://www.adafruit.com/products/358 and http://www.adafruit.com/products/618
Adalogger-with-TPS63001
The SAMD21-based feather adalogger with a different voltage regulator. It uses a TPS63001 synchronous buck boost chip to be able to use LiFePO4 batteries and still have a steady 3.3v. Another advantage is that more capacity can be squeezed out of LiPos, still maintaining a stable 3.3V rail.
ArduinoZeroBluetoothHIDStick
Yet another keystroke injector based on the Arduino Zero/Feather M0 and the HC-05 Bluetooth module
E-paper-breakout
A small universal e-paper breakout board for 24pin FPC EPD modules based on a standard schematic. Includes casellations for easy integration and a high side switch for complete power disconnect otion.
ESP32-PICO-D4-Eagle-Library
nice ESP32-PICO-D4 Eagle Library
Lithium-charger-and-LDO
This is a circuit that is used very often. It features a MCP73831 lithium charging IC capable of charging currents up to 500mA and a generic SOT23-5 LDO. I chose ultra low quiescent current mudels such as XC6215 in the 3.3V variant so the circuit can provide 3.3V all the time and last for ages
NeuroWing
Feather wing that carries a 2ch bioamplifier board, a HC-05 bluetooth 2 module and some nice little features.
PowerManager
Small power manager PCB based on a previously designed charger+LDO board. This new version has additional features: MCU-controlled power latching using a pushbutton and a fuel gauge with current sensing capability
Vibro
Carrier board for 4x10mm vibration motors and the necessary circuitry. You can choose between mosfet and BJT as a switch.