We just pushed the V1.2 of the Beechat Crank to our GitHub @beechatnetwork2 Beechat Crank is a human-powered, open-hardware, fully-waterproof, electricity generator. The project was born out of the need to power electronics in all off-grid scenarios. We needed a way to power our devices in all weather conditions, and making a human-powered generator meant that problem could be solved. When we looked for a solution, we didn't find what we were looking for, so we decided to make it, and make it open source! https://github.com/BeechatNetworkSystemsLtd/BeechatCrank/ Features High power (3A) USB-C IPX8 output 18650 3600 mAh battery (LG M36) Charging time of 4 hrs 24 min. to full charge with 10% efficiency loss at 4.5 Watts. Overcharge protection Parts Beechat Crank is composed of the main device, which we call the Heart. It contains the battery, the generator and all the electronics (the handle is detachable) The Pedal Case is an assembly which the Heart can be attached in. which dramatically speeds up the charging from 2.5 hours to 25-30 minutes. This is achieved with reduction gears to, with the same revolutions per minute, generate more electricity. Generator part We have chosen the 35L048B1B motor with a mass of 88 grams, giving us us 450 mA for each phase of the coil and works at 5V. The wire leads are connected via female Molex connectors to the charging PCB board. New modifications: * Added a Molex type connector to the PCB to connect the motor. * The Zener diodes were changed, by means of a rectifier bridge. * A new and improved Texas Instruments brand battery management chip was selected. * Added a boost converter to allow different voltage batteries. * New Portescap brand two-phase generator with 90% efficiency and peak power of 4.5 Watts was selected. #crank#beechat
前段时间一直被MajdataPlay的外键输入问题困扰：有玩家反映majplay会无征兆地出现拖判和吃音，但是内屏一切正常 因为我是第一次接触游戏开发，IO这方面也完全没经验 一开始我和bb本怀疑是线程调度的问题，即：IO线程时间片被其他线程挤占了，导致IO线程无法及时处理HID设备回报。为了验证这个猜想，我们尝试提高了IO线程的优先级，照旧 接下来我怀疑是我那套框架有问题：majplay是根据上一帧与这一帧的按键状态判断按键是不是"click"。为此我重写了这部分的实现，改进了IO线程与主线程之间的交互，问题照旧....... 到这里我已经怀疑这不是majplay的锅：IO线程没有任何异常，IO线程与主线程的交互没有问题，Note判定逻辑也没有问题，那就是设备确实没有回报给majplay或者设备发过来的回报中按键确实没有按下，但是大佬说hdd没有这种问题.....（人已经快崩溃了，这完全看不透也摸不着，因为我用单片机模拟玩家打高速纵连是完全没有问题的，我在家里用手台测试也没有问题） 到最后，bb本灵光一闪，说有没有可能是led刷新率过高，把按键控制板干爆炸了？我们让大佬把led刷新间隔从16ms改成100ms，吃音问题瞬间没有了，无语了 。。。。。。。。。。。。。。。。。。。。 adx是一个控制板同时管理按键和led，为什么我没有遇到吃音问题呢，因为我的手台不是adx的... #dev
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Last weekend we presented the Beechat Rune device for the very first time, as part of the Volla Community days in Germany. Featuring 4 simultaneous streams, capable of audio and video streams with next-gen CRYSTALS cryptography, the Beechat Rune is a perfect addition to privacy-focused systems. @beechatnetwork2 #beechat#mesh#p2p