Waveshare 5.83inch E-Ink display HAT red/black/white three-color e-paper SPI interface compatible with Raspberry Pi Zero/3B/3B+ Review

Demo Board Type : ARM Model Number : 5.83inch e-Paper HAT (B) Brand Name : Waveshare Resolution : 600*448 Interface : SPI Display color : red/black/white three-color Grey level : 2 Refresh power : 26.4mW(typ.) Standby power : <0.017mW Viewing angle : >170 degree Operating voltage : 3.3V~5V

GSM/GPRS/GNSS/Bluetooth 3.0 HAT for Raspberry Pi,Support SMS, phone call,email,compatible with Raspberry Pi 3B/3B+/Zero/Zero W Review

Compatible With : Raspberry Pi 3B/3B+/Zero/Zero W Brand Name : NURSTURM Accessory Type : Extension Board Dimensions : 30.2mm x 65mm Downlink speed : max 85.6kbps Uplink speed : max 85.6kbps Coding schemes : CS-1CS-2CS-3CS-4 SMS storage : SIM card Bluetooth : Bluetooth 3.0;Supports SPP, OPP, HFP/HSP, etc. Operating voltage : 5V Onboard : SIM868 Model Number : GSM/GPRS/GNSS HAT GSM : Compliant to GSM phase…