A friend of mine has a market stall and I thought a display with a turntable with a few LEDs in the bottom to light up when it starts to revolve would work well here to show off some glass dogs that he sells. That's the easy bit. The actual setup is quite difficult when you put all the components on the table. I used a YouTube video to show me how to connect a PIR to an Arduino board which in turn triggers the revolving base powered by a Micro Servo that I re-configured to rotate 380 deg... How to connect a micro servo to an arduino board ..read more

I am currently looking for resources to help me bring this idea to life, a small tracking device integrated with simcard, gps that are programmable with the Blynk app. This device should be attachable to personal belongings like keys, wallets etc., I am seeking guidance on sourcing a complete set of electronics kits and components needed for this project, as well as integrating the Blynk app as a controller for these tracking device. Any advice or recommendations on where to find these... IoT-Based small tracking device ..read more

Hi everyone i am relatively new to electronics as a hobby and need some help. I'm trying to identify a surface mounted chip (maybe a MOSFET) that has blown in a dab radio ive taken on as a fixing project. It is very small (at about 2mm square!) and because it blew, I am unable to identify it. On the other side of the board there was a 200 microfarad 10V capacitor which had also blown. I've purchased one of those to replace that, but the smd identification is a mystery. Would anybody have a... Identifying a blown smd chip ..read more

I have used Designspark to create a new relay board with an I2C interface, opto coupler barrier and separate power source for the relays. However I need someone to look at my design and tell me if its going to work before I make a prototype. I can't attach the schematic to this post. Regards Chris ..read more

Hello, For our profile paper at school, we are building a football robot that can participate in the RoboCup Junior. We use three motors for the drive, these motors have a 'free run' current of 300mA and a stall current of 5A. It is unlikely that the motor will draw such a high current because it is blocked, but we still want to be sure that this high current does not damage our ICs or burn them out completely. We would like to use the L298N for the engines. This has so-called sense... L298N motor driver ..read more

hi all, i have set a challenge to wind my own coils to repair the growing number of sick magnetos i have and non running engines . i purchased an old machine made by v.p engineering a division of halsten engineering of balgowlah nsw. its a eclipse e59 coil winder and was purchased new in oct 1983. my search show the named company closed permanently and im in hope that someone may have some knowledge of there machines and or written info such as operating manuals, thats a long shot i know... coil winding ..read more

Hey all, Relative newbie to electronics and lighting. I’m lighting a scale model that will be capable of separating in two. When the 2 parts (A and B) are joined/connected via a 3.5mm connector, both parts will be powered by one 5v/1A power supply connected to A. When separated, the detached part B will be connected to a second power supply via a second connector (ie, not the same connector used to join it to A). Two things I need to accomplish: 1) there is a light in part A that will need... Help with circuit design ..read more

First allow me to preface this saying my experience with electronics is woefully lacking, hence my request for help on such a seemingly simple topic. My application would be a method to gain ones attention in a loud environment. Basically a simple on/off remote LED light. I know how to create the LED portion, but the actual remote mechanism is troubling me. I have purchased a set of remote tea lights from Amazon, just to experiment, but would very much appreciate advice from the... Simple remote on off LED light ..read more

I'm looking to build this DIY coffee roaster from a 24V 100W DC e-scooter motor seen in this YouTube video: I'm connected to 220V. Is it possible to get clear help instructions connecting the motor to the 220V AC here or elsewhere online? Thanks ..read more

hello, please i read a dump from nand (GD5F1GQ5UEYIG) and I try to write it to other one (F50L1G41LB) but the device don't tourn on with the new nand i try to edit the dump size with hex editor and try to write it again but nothing happen (the device tourn on normaly with the original nand ..read more