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目前顯示的是 11月, 2022的文章

Mars and Auriga

 30 Nov 2022

VOICEN - the smart speaker

  smart speaker from scratch , xiongyihui github   hackaday   makerfab so far, this project is the most simple and straightforward I have found. All the codes are under one github,  Hardware: raspberry pi + mic array + speaker mic array are relatively low cost, based on Respeaker: 2 mic array 4 mic linear array , wiki  ( preferred) 6 mic array  Respeaker 4 mic array and ODAS the codes are more readable than respeaker   no DSP is required also based on Speex codec With echo cancellation   coding architecture based on webRTC  ODAS

Matrix lab creator

After Indiegogo success,  the kits are no longer stocked hard to find after initial delivery.  The github is still available, but seems no longer maintained or updated. This means that some advertised feature will likely not be provided, and existing code will be behind the mainstream kernel upgrade  Well, maybe it's time to go out of your comfort zone, and explore a bit on your own Basically, this is based on logi-Pi  HAT, github   Spartan 6 FPGA   has less logic blocks than logi-pi, btw, so the price comparison on their website is not fair  FreeRTOS   Matrix Creator website , forum , ecosystem Hackster.io Newark Amazon, element14 gives up stocking Rodolfo Saccoman .  Techcrunch Rokk3r

Norman Butler and his binoscope

Dall Kirkham binoscope , built in 1980s 6 in f15 Nov 1982 S&T Telescopenerd   Another article  on binoscope making Norman lived in Hong Kong since 2004. After retirement, he moved to Saipan and Guam to continue his hobby the book

player one Saturn SQR camera

 This Player one cam has much higher full well and FPS than Zwo ASI version: this is even faster than read mode 0F at full resolution was it due to over-clocking as in personal computers?  Speculation: by slightly over-voltaging the CMOS chip, so that the chip can run in slightly higher clock rate. But data is still output within the required spec. Of course the the extra heat needs to be properly dissipated, eg active cooling using IMX323 for illustration below: the analog voltages, VDDH 1000 FPS kickstarter   PAM4  demodulation  Multi slope ADC       MTK imagiq  APU Paddle lite AliExpress   Poseidon pro  IMX571

ES8311 and ES8388 codec IC

ES8388 audio codec module is one of the audio codec modules available that is supported by ESP32 and official ESP-ADF releases. The ES8388 module lets you have: Stereo microphone and line input Stereo headphone and line out Up to 96 kHz 24 bpp high quality audio This module is compatible with all MCUs that have I2C and I2S ports (like ESP32, ESP8266, STM32, i.MX6, Raspberry Pi, etc) ES8311 Maxgerhardt github PCBartist twblogs ESP32-A1S  (limited stock)Audio codec AC101 or ES8388 built-in. NB the pinouts and firmware are different! Arduino - ESP31-A1S instructable Phil Schatzmann and his github   Simple A2DP thaaraak github on ESP32-A1S github of Yveaux and  Marcel-licence ESP ADF   example:  Logitech PiCorePlayer squeeze lite squeezebox forum   ESP32-Audio-kit  (from AI thinker) based on ESP32-A1S, is simple and small. But upgrade-ability seems limited  Alex John Talbert mixer equalizer: can this be used as simple equalizer? how about proces...

MT762x based router

 GL.inet GL-MT300N v2, doc    Nexx WT3020 on DSLRDashboard MT7620N, DSLRController , chainfire MT7628 是联发科技 2014 年底发布的业界新一代 2T2R 802.11n Wi-Fi AP/路由器系统单芯片解决方案(SoC)。这款全新 SoC 为智能家庭内的数据、语音和影像应用程序提供高数据传输率,而且耗电量远低于目前市场上其他同类产品。它和 MT7620 一样具有 2T2R 300M WiFi 速率,接口丰富,但是它比 MT7620 功耗更低、芯片成本更低,专门针对物联网应用推出 3个串口、PWM 输出等特点,可谓是 MT7620(2012 年发布)的升级产品。 MT7628 和同年发布的 MT7688(150M WiFi)是同一类芯片,两者管脚、软件几乎完全兼容。 csdn openwrt instructable wifigid openwrt as Tor router, aka OnionWRT, github ixbt

H96 tv box root

  H96box official  Based on RK3319 Nobugware Akin   Magisk HyperHDR on related RK3328 version

4 Nov 2022 mag 6.1 earthquake in gulf of california

2022-11-04 10:02:46 UTC iris seismon event 11617002   it is in HKO earthquake report HKO seismograph   HK HKPS  online builder raspishake event rs2022vshxqz  USGS OpendTect github