Copyright 1998 - 2023 DPG Media B.V. Thu, 12 Jan 2023 05:21:12 GMT Thu, 12 Jan 2023 05:21:12 GMT https://tweakers.net/reviews/76 Tweakblogs.net is de weblog service van Tweakers, de grootste hardwaresite en techcommunity van Nederland. https://tweakblogs.net/ https://tweakers.net/g/if/logo.gif Tweakblogs.net nl-nl https://superkris.tweakblogs.net/blog/cat/3473 gathering@tweakers.net https://superkris.tweakblogs.net/blog/16935/old-school-phone-as-doorbell-and-domoitcs-interface! Introduction Many of you may like the cool looks of an old dial phone. I know I do, but in 2018 it’s hard to find any real purpose for them. Suddenly it hit me! Why not turn it into a doorbell? I guessed it would be a 10 minute job. Just supply some voltage to the coil and let it ring! Man I was wrong… After a 2 week project I learned a lot and now have an awesome doorbell and...SuperKris Elektronica algemeen https://superkris.tweakblogs.net/blog/16935/old-school-phone-as-doorbell-and-domoitcs-interface!#reacties https://superkris.tweakblogs.net/blog/16935 Wed, 14 Nov 2018 20:22:29 GMT https://superkris.tweakblogs.net/blog/16933/h-bridge-for-controlling-phone-bell Because my post about the old school phone bell was getting a bit to big, i decided to make this a separate post. A H-brige is generally used to power DC motors and change direction. Its build with 4 FETs and some additional components. My knowledge of analog electronics was a bit rusty but the guys on the forum here where a great help. Below you can see a picture of just the H-bridge. This is...SuperKris Elektronica algemeen https://superkris.tweakblogs.net/blog/16933/h-bridge-for-controlling-phone-bell#reacties https://superkris.tweakblogs.net/blog/16933 Wed, 14 Nov 2018 20:12:18 GMT https://superkris.tweakblogs.net/blog/14481/external-status-leds-for-raspberry-pi-(without-gpio) Introduction The Raspberry Pi is a great device for all kinds of applications. For some of these applications you want to build the Rpi in a housing where the status LEDs are no longer visible. I like to be able to see the LED's for some basic diagnostics. My solution:Low cost. Componects can be bought for less than € 1,-No connection to GPIO needed.No code needed. Works without any software. Here...SuperKris Elektronica algemeen https://superkris.tweakblogs.net/blog/14481/external-status-leds-for-raspberry-pi-(without-gpio)#reacties https://superkris.tweakblogs.net/blog/14481 Sun, 19 Feb 2017 16:23:23 GMT