Pebble Tracker is a secure, battery-powered cellular IoT prototyping platform designed for blockchain-based applications. Built around Nordic Semiconductor's latest low-power nRF9160 System-in-Package (SiP) and driven by open source firmware, Pebble Tracker features GPS support, a rich variety of sensors, NB-IoT/LTE-M connectivity and advanced security features making it the Ideal for complex logistics applications where trust is paramount. Combined with the IoTeX blockchain, its onboard capabilities allow developers to design and build innovative, decentralized IoT solutions that go far beyond traditional asset tracking.
Loko is an open source, battery-operated GPS tracker. It's a small, simple, and useful device that sends navigation data to its receiver via a peer-to-peer LoRa radio. Unlike other similar technologies, there are no ongoing costs. Loko is based on radio communication and requires no SIM card/monthly fee. It also works everywhere, even without 2G/3G/LTE coverage.
This design is a PMOD with the ublox NEO GNSS receiver footprint. Able to receive GPS and GLONASS simultaneously.
Introduction: ZVS is the so-called zero-voltage switching (ZVS)/zero-current switching (ZCS) technology, or soft switching technology. The efficiency of switching power supply can reach 75%~85%.
Introduction: Smaller ESP8266 development board, verified
Introduction: Inspired by https://oshwhub.com/Giftina/ESP8266_CARD, rewiring, optimizing many circuit designs, adding RFID function, which can replace Nodemcu.
Introduction: You can add NFC COB module or UID/CUID and other COB modules to implement smart card applications. Please add the font in the attachment, otherwise the logo may not be displayed normally. The font editing software is also in the attachment.
Introduction: Dual-channel AD9744 high-speed DAC module compatible with DE2 and other Youjing development boards, Xiaomeige development board interface.
Introduction: The board is based on the open source remote control drawing by Loli Master, and is powered by two 18650 batteries on the back. Has been physically verified. Attached are the source code and firmware.