Tagged Questions

2
votes
1answer
85 views

Control multiple LEDs using an IC and PC/Linux thru USB

I've already tried to search this topic but all Google results said that this isn't possible. Is there any chance of controlling multiple LEDs using a PC/Linux, through USB? The diagram might look ...
2
votes
2answers
163 views

What can I do as a student to be a better candidate for a hardware design job? [closed]

If you were looking to hire a student still in school for an internship position at a high-tech company (say, Microsoft, Apple, or Google) for hardware design. What kind of skills would you be looking ...
3
votes
2answers
140 views

Identify an IC Found in a Garage Door Opener

Inside a defunct garage door opener I found this IC: I tried searching for 33192C with variations of 'datasheet' and such keywords, but I got routed to the usual datasheet farms who are happy to ...
5
votes
3answers
202 views

Driving LEDs / other small loads with a 74HC06 or similar inverter

I was recently reverse-engineering some firmware (and other bits) from a router, and spotted that the front panel LEDs were driven from a 74HC06 hex inverter gate chip rather than a proper LED driver. ...
2
votes
3answers
169 views

How to identify faulty or Fake (Duplicate) ICs?

I am developing an application on LPC2138. I prepared prototype using a standard development board. After completion, I shifted to final board. But I am not able to download any program my LPC2138. ...
-1
votes
1answer
105 views

Mobile Server Uplink / GPS Coordinate Packet? [closed]

I'm completely uneducated when it comes to more advanced electrical engineering. I understand the very basics. I have over 12 years in software development / programming, but would like to extend my ...
2
votes
3answers
339 views

IC/Microcontroller logic gates

I am a software developer trying to understand how computers work at a lower level. I understand that there is a difference between an Integrated Circuit, a MicroProcessor and a MicroController. A ...
0
votes
1answer
198 views

Frequency modulation and communication between two microcontrollers

I have good progamming skills and concepts on 8051 microncontroller. People suggest me to work on PIC and ARM micro-controllers but I want to make some small projects on 8051 and later move on to ...
1
vote
1answer
246 views

Building and Driving a Stepper Motor

I don't know whether or not I'll actually build one yet, as to do so properly would require ball bearings, metal working, etc and frankly the fund's just aren't available right now(have yet to ...
0
votes
1answer
426 views

Arduino to act as a switch for a remote

I have a wireless remote control for a light. It runs with a 12V battery. It has two mini Omron type B3F momentary ON switches (mini push-button switches). One button is for Light ON, the other for ...
3
votes
1answer
346 views

Can I connect ICs directly together

This is probably answered elsewhere but I can't seem to find it. I have a circuit which uses a Mega8 to drive a couple of ICs as shown in the diagram below. The ISP connectors in the diagram are: ...
0
votes
1answer
311 views

48VDC SLA charger from 12VDC supply design help

I am in the process of designing a 48 VDC (comprised of 4 x 12 VDC) lead-acid battery charger, with an input voltage of 12 VDC. 1W - 2W output is sufficient, and relatively high efficiency with low ...
1
vote
1answer
188 views

Driving a LCD from a Basic Stamp 2 microcontroller

I'm not able to drive a UP018D01 LCD Display (www.ic72.com/pdf_file/u/590916.pdf) with my Basic Stamp II microcontroller. The first step I'm trying to do is to switch ON the LCD backlight. According ...