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Writing logged data from sensor to flash once SRAM is full?
Hi   This is more of a general memory question. Not sure where to post it.   I have an ESP8266 that logs data from a sensor. The sensor outputs a 1 byte number and the...
Thu. Apr 12, 2018 - 04:52 PM
Op amp virtual ground confusion
Hello Inter web I am confused with virtual ground used for op amps and I cannot verify my calculations with measurment because of virtual ground. My setup is as follows: LM358...
Sat. Feb 24, 2018 - 08:26 PM
Photodiode op amp circuit trouble
Hello Internet   I am trying to amplify the voltage signal from a photodiode. The signal ranges from 0.150 V to 0.3 V. I am using an LM358N op amp. When i read the...
Wed. Feb 21, 2018 - 09:07 AM
MPU 6050 cannot transform roll and pitch with yaw rotation
Hi Guys   I am trying to read and integrate the values of a MPU 6050 to display Roll, pitch and yaw on a display. Up to now I have successfully been able to read and...
Mon. Sep 25, 2017 - 03:32 PM
Send collected data to windows computer through USB
Hi Guys   I have a project in mind but I am not sure what the easiest solution will be. I have googled but i cannot get the answers I am looking for.   So the idea is to...
Wed. Aug 30, 2017 - 06:51 PM
433 MHz wireless unit does not sync when using UART to send
Hi Guys   Ive been working on a project whereby i need to send an char via a 433MHz transmitter to a receiver. The idea is to receive the char and then display it on a screen...
Tue. Jul 18, 2017 - 05:28 PM
Cheaper uC than the atmega169?
Hey guys   I have been building a speedometer and trying various different things just out of boredom mostly. One major issue I am experiencing is space! I am struggling to...
Tue. May 10, 2016 - 06:41 AM
Capacitive touch button behind LCD screen
Hi guys   i have recently built a speedometer (version 2) with an LCD display driven by a LCD driver chip and a microcontroller (atmega168). All the electronics are small and...
Thu. Mar 31, 2016 - 09:15 AM
Using RF for lap timing?
Hey guys. I have been trying to build a lap timing device that times my laptimes around a track with my bike. i have built something that trips with a laser but only one person...
Sun. Feb 21, 2016 - 06:11 PM
Help choosing an instrumentation amplifier for k type thermocouple
Hey guys i have unsuccessfully tried to amplify a k-type thermocouple signal using an op amp as a non inverting amplifier. i have been reading and researching and it seams quite...
Fri. Feb 5, 2016 - 05:38 AM
Help on how to use a shunt voltage regulator
Hey guys, i was having problems reading resistance values from an NTC thermistor. The adc value would fluctuate a lot. i figured that i go back a few steps and make sure the...
Wed. Jan 27, 2016 - 07:44 PM
Do i need a protection circuit for 24V AC solenoid?
Hey guys. I am driving a 24v AC solenoid with the use of a optotriac and a triac. Before i actually go ahead with this i would like to understand if i need to use a snubber...
Fri. Jan 22, 2016 - 04:45 PM

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