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BC557 PNP Transistor

A 2-post collection

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Making an unusual and beautiful single-digit clock

Generally at whatimade.today we post original projects we dream up ourselves. Today's post is a little different. We're going to describe how we constructed Mirko »

Mike Diamond on DS3231 Real Time Clock - arduino nano - 7-Segment - jlcpcb - BC557 PNP Transistor - clock - Mirko Pavleski - L7808 01 May 2020
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ESP 8266 Mailbox Notifier using DeepSleep and Blynk

Update July 2020 - if you're interested in creating a mailbox notifier that'll work on regular AA batteries literally for years, take a look at my »

Mike Diamond on ESP8266 - Battery - reed Switch - 18650 - blynk - deepSleep - mailbox - antenna - U.FL to SMA cable - laptop - low-power - ESP8266-07 - notifier - Normally Open - Normally Closed - arduino IDE - BC557 PNP Transistor - IOT 22 June 2016
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