202307¶
mysql binlog¶
SHOW BINARY LOGS;
SHOW BINLOG EVENTS IN '<BINARY_LOG_FILE>' LIMIT 100;
SHOW BINLOG EVENTS IN '<BINARY_LOG_FILE>' FROM <POSITION> LIMIT 100;
Raspberry Pi 2W¶
GitHub - docusealco/docuseal: Open source DocuSign alternative. Create, fill, and sign digital documents ✍️¶
- open source docusign
AMSAT-Deutschland – International Satellites for Communication, Science and Education¶
- ドイツのアマチュア衛星通信集団
電源切り替え回路¶
GitHub - pfnet/pysen: Python linting made easy. Also a casual yet honorific way to address individuals who have entered an organization prior to you.¶
tunnel系¶
- ssl
- icmp
- udp
- http
USB-Cで給電する¶
- USB Type-C® Cable and Connector Specification | USB-IF
- Power delivery
- 22.4-24MHz(BFSK) をCC経由でネゴシエーション
- CC1とCC2は片方Vconn，片方Rp/Rd分圧として利用．
- CC(Configuration Channel) Pull-up抵抗(power source)
- USB Battery Charge: 56kΩ
- USB Current(1.5A): 22kΩ
- USB Current(3.0A): 10kΩ
- CC Pull-down抵抗(power sink)
- 5.1kΩ
- PDO
- PD1.0: source仕様強制力なし
- PD2.0: source仕様が明確に策定
- PD3.0: PPSが利用可能に．fixed POD, Augumented POD(PPS)．
- ref: パワーデリバリーの起源と仕様 | GraniteRiverLabs
source ip確認系¶
- http
curl https://httpbin.org/ipcurl https://ifconfig.iocurl https://ipinfo.iocurl https://myipv4.p1.opendns.com/get_my_ipcurl https://myip.dnsomatic.com/
- dns
- opendns
dig myip.opendns.com @resolver1.opendns.comresolver1,resolver2,resolver3,resolver4
- google
dig TXT o-o.myaddr.l.google.com @ns1.google.comns1,ns2,ns3,ns4
- opendns
STM32CubeCLT - STM32CubeCLT is a toolset for third-party integrated development environment (IDE) providers, allowing the use of STMicroelectronics proprietary tools within their own IDE frameworks. - STマイクロエレクトロニクス¶
わさびの抗菌成分¶
- アリルイソチオシアネートというツーンとくる辛味成分のアレが抗菌作用を持っている．
CH_2CHCH_2NCS,C4H5NS- 抗腫瘍作用(がん予防剤)も報告されている
- アリルイソチオシアネート - Wikipedia