Good resources https://www.ti.com/lit/ug/tidu415/tidu415.pdf
All posts by
1-Wire respources
Good resources https://www.analog.com/en/resources/technical-articles/guidelines-for-reliable-long-line-1wire-networks.html
Laser resources
These sites are great go-to’s for display laser information and tools: photonstreams.com rekordbox.tools
Mains zero crossing detect
Useful resources for this https://dextrel.net/dextrel-start-page/design-ideas-2/mains-zero-crossing-detector https://www.eevblog.com/forum/projects/mains-zero-crossing-detection Zero crossing detect ICs https://www.rohm.com/products/power-management/ac-voltage-zero-cross-detection-ics/bm1z001fj-product
SIM Cards-IoT
Having to manually select networks For typical SIM cards, a phone or GSM module can scan all available networks, however it will only try and connect to those for which the SIM is authorized. That is because these type of SIM cards have steering – the SIM card can instruct the phone / GSM module […]
LTE-M Coverage
UK Coverage O2 coverage map
BLE Adveristing data
Advertising packets Packet reguarley broadcast by the advertising device (peripheral). manufacturer_data Can be used for custom data bytes for your particular application. BLE scan response Packet sent by the advertising device (peripheral) upon the reception of scanning requests (it is a response to a device scan). Typically has more data than the advertising packets – […]
Useful apps
GATTBrowser for iOS is great for testing GATT implementations.
GATT
GATT defines the way that two Bluetooth Low Energy devices transfer data back and forth. Uses the generic data protocol called the Attribute Protocol (ATT). GATT server & client The peripheral is known as the GATT Server. It holds the ATT lookup data and service and characteristic definitions The phone/tablet is the GATT Client which […]
iOS devices
BLE is the only wirelss comms option outside of HID devices that avoids the need for MFi certification and the associated onboard security hardware requirements.