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LM358 Dual Op Amp Tester

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LM358 - Same pins as: TL092 6558/6552 M5219 This is the modified version of the LM 741 Op Amp tester in the older Post: https://stevepedwards.today/circuitdigest.com/electronic-circuits/opamp-lm741-tester-circuit I'll draw it out correctly, but basically it's twice the above circuit with pin 7 Vcc changed to pin 8, and the LM358 amps are pins 2-;3+;1 out; 6-;5+; 7 ... LM358 Dual Op Amp Tester

Nice LED Clock Kit

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A really well put together kit and design! Pleasure to build and all functions work - time, date - room temperature accurate too, cross checked by my Weather Station DHT 11 sensor. Full instructions at link below. https://www.diyleyuan.com/jc/082v4.html

Another 741 Op Amp Test Circuit

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From GC Loveday; Electronic Testing and Fault Diagnosis, p67. I changed the 0.1uF for a 2.2uF for a slower flash rate, and the 680R for a 310R for a brighter LED. I had a 100nF not a 10nF also. Compare with the last one in prior Post:

Technics SU-X911 – multiple issues

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Ebay Casualty:-  Please note: The unit powers on and amplifies however there are multiple issues when the unit does so. When linked to any type of speakers the left speaker connections do not work at all, meaning the only sound that can be heard is out of the right speaker. When amplifying- music, the sound is ... Technics SU-X911 – multiple issues

Technics SU-V1X – No Power

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A nice 40W monster from the 80s! Was working - stored for years, now not turning on after the last owner tried to recently...allegedly... Poor old bugger! Look at the dust in this thing - no wonder it won't turn on! First thing - get the hoover out...! That did not work at all - ... Technics SU-V1X – No Power

Weather Station Complete

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Packed in a Neo6 GPS, BMP180, DHT11 and OLED screen controlled by a Nano fixed into female headers for easy component swap out and height gain- shame about my engineering skills, but..it works, and finally used that 6 year old project box..: Nano code: /****************************************************************************** Steve_GPS_DHT_BMP_OLED.ino based on: TinyGPSPlus_GPS_Shield.ino TinyGPS++ Library Example for the SparkFun ... Weather Station Complete

LM358 VCO Circuit

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This isn't clear for beginners, but V/2 at pin 5 non-inverting input of amp 2 means you have to add another 2 x say, 10k resistors as a voltage divider to supply the correct voltage at pin 5 - NOT the full PSU voltage (5V) as I did at first - else it won't work. ... LM358 VCO Circuit

Kentiger HY-502S Amp

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These are good amps for the size, function and cost - if you have a 3-5A, 12V PSU already?! They can be improved by modding according to: https://www.radioworld.com/tech-and-gear/modding-the-kentiger-hy502s-audio-unit ..agreed, those LEDs are annoying, better if they had been volume levels, not a disco.. Ok, you can buy a classic 90s used amp on Ebay for ... Kentiger HY-502S Amp

Two Transistor Schmitt Trigger; Converts Analogue Signal to Digital Output

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This essential circuit converts an analogue signal to a digital output: https://stevepedwards.today/howtomechatronics.com/how-it-works/electrical-engineering/transistor-schmitt-trigger/ This circuit gives a max output of 3.8V digital from a 3.8V sine input; The Vcc can be no more than 5V else the top threshold of this circuit design is crossed and the output goes to 0V; the input must be no ... Two Transistor Schmitt Trigger; Converts Analogue Signal to Digital Output

Reading Remote Control Codes With Arduino

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Old remotes can be re-purposed: Following this Post using the IR sensor connections - forget the LEDs just for reading codes: https://stevepedwards.today/maker.pro/arduino/tutorial/how-to-control-leds-with-arduino-ir-sensor-and-remote #include <IRremote.h> #define first_key 48703 #define second_key 58359 #define third_key 539 #define fourth_key 25979 int receiver_pin = 8; int first_led_pin = 7; int second_led_pin = 6; int third_led_pin = 5; int fourth_led_pin = ... Reading Remote Control Codes With Arduino

Simplest Transistor Oscillator and Breadboard Crystal Oscillator Actually Working!

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To have a more complete understanding of today's networked tech world, you have to link some key electronic fundamentals to the OSI layer 1 area of IT networking that deals with the actual voltages that generate binary values 1 and 0 that have to be regulated/counted with reference to time of an accurate reference clock ... Simplest Transistor Oscillator and Breadboard Crystal Oscillator Actually Working!

Atmega 8L Inductance/Capacitance Kit – Good Cheap Chinese LC Tester – If you have the missing bits!

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All explained in the vid as I couldn't find any info on this thing when I thought it was dead on arrival...again with Chinese stuff, ya pays ya -£18.00 and ya roll the dice...! A nice kit to build actually; as usual test all the component values before you place them so you have a ... Atmega 8L Inductance/Capacitance Kit – Good Cheap Chinese LC Tester – If you have the missing bits!

Showing GPS data in 128×32 OLED

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Finally answered some programming fundamentals for myself! The detailed declarations outside of void setup(){} and loop(){} are effectively code modules that can then called as condensed functions later e.g in the main loop (if you want)..duh. I got the oled char code to get going from the Adafruit GFX example. The most important thing I've ... Showing GPS data in 128×32 OLED

Neo 7/Uno/Nano showing accurate GPS clock LCD location data via pins 8/9

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https://stevepedwards.today/learn.sparkfun.com/tutorials/gps-logger-shield-hookup-guide/example-sketch-tinygps-serial-streaming https://www.gpsinformation.org/dale/nmea.htm https://www.sparkfun.com/gps Build a gps time referenced clock https://stevepedwards.today/learn.sparkfun.com/tutorials/alphanumeric-gps-wall-clock TinyGPSPlus_GPS_Shield.ino /****************************************************************************** TinyGPSPlus_GPS_Shield.ino TinyGPS++ Library Example for the SparkFun GPS Logger Shield By Jim Lindblom @ SparkFun Electronics February 9, 2016 https://stevepedwards.today/github.com/sparkfun/GPS_Shield This example uses SoftwareSerial to communicate with the GPS module on pins 8 and 9. It uses the TinyGPS++ library to parse the ... Neo 7/Uno/Nano showing accurate GPS clock LCD location data via pins 8/9

Uno/Nano LCD arduino-weather-station-2, DHT11, BMP80

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Local weather station (Perranporth) using a Vantage Pro2: https://www.sueandalan.plus.com/weewx/index.html OK! According to: https://stevepedwards.today/routecalculator.co.uk/elevation my address elevation IS the same as my phone App states, so can be added to the BMP180 code later, as my local ref. - Altitude: 84 m. (276 ft) But first, check the sensors work!: DHT11-Datasheet DHT middle pin out to ... Uno/Nano LCD arduino-weather-station-2, DHT11, BMP80

Combining Code from BMP180 and Thermistor LCD Output

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https://youtu.be/V73NPS6-OYI https://stevepedwards.today/wmrx00.sourceforge.net/ https://youtu.be/DXGtw0zpOqY After a lot of trial and error for the order that the 2 code pieces display their resp. data to LCD and serial monitor, I got both sensors to print to the LCD while keeping the BMP180 serial display: CODE: #include <LiquidCrystal.h> #include <Wire.h> #include <Adafruit_BMP085.h> Adafruit_BMP085 bmp; int ThermistorPin = 0; ... Combining Code from BMP180 and Thermistor LCD Output

Bosch BMP180 Pressure Sensor

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3.6V in MAX. pin1 Vcc pin2 GND pin3 SerialCLock pin4 SerDAta Least sensor seems to work. #include <Wire.h> #include <Adafruit_BMP085.h> Adafruit_BMP085 bmp; void setup() { Serial.begin(9600); bmp.begin(); } void loop() { Serial.print("Temperature (C)= "); Serial.print(bmp.readTemperature()); Serial.print(" Pressure (Pa)= "); Serial.print(bmp.readPressure()); Serial.print(" Altitude (m)= "); Serial.print(bmp.readAltitude()); Serial.println(); delay(200); } I got a better Gplay App for ... Bosch BMP180 Pressure Sensor

Arduino Examples – Basics Dir 1

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From https://www.arduino.cc/ ARDUINO 1.8.9 IDE zip file This example shows DAC info visually and as a serial stream: Read a potentiometer, print its state out to the Arduino Serial Monitor. https://www.arduino.cc/en/Tutorial/AnalogReadSerial /* AnalogReadSerial Reads an analog input on pin 0, prints the result to the Serial Monitor. Graphical representation is available using Serial Plotter (Tools ... Arduino Examples – Basics Dir 1

EZM 1Hz-999kHz DDS Functional Signal Generator

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https://www.amazon.co.uk/KKmoon-Precision-Generator-Adjustable-Frequency-transparent/dp/B01HMBFSPQ/ref=sr_1_9?crid=2HY6LBDX864QP&keywords=kkmoon+signal+generator&qid=1568732073&s=gateway&sprefix=kk+moon+sig%2Caps%2C159&sr=8-9 This, with my Hantek DSO5102P (Ebay -£170 with shipping) has added the bare min requirements of a hobby electronics tinkerer to get anywhere in understanding electronics to any meaningful degree for the -£20.99 cost and removed the hassle of using a PC with sound card outs, FLS or other wave generator software - which ... EZM 1Hz-999kHz DDS Functional Signal Generator

XR2206 Function Gen

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https://www.amazon.co.uk/gp/product/B01HMBFSPQ/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1  

Lysignal Fever 6J1 Tube Amplifiers Board – Safe Novice Valve Amp Intro

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Lysignal Fever 6J1 Tube Amplifiers Board Preamplifier Headphone Pre-Amp Amplifier Audio Board DIY Kits £14.69 Specifications: *Models: 6J1 tube *Channel types: 2.0 / stereo *Working voltage: AC12V 0.8 A *The power interface: 5.5 * 2.5 plug *Circuit board size: 77 x 75 x 52 mm *Potentiometer role: volume adjustment + power switch. Package Included : ... Lysignal Fever 6J1 Tube Amplifiers Board – Safe Novice Valve Amp Intro

Arduino Intro on Linux Mint

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I bought the Elegoo R3 Project Super Starter kit from Amazon, -£30: What you get, more or less: In one evening I got the first basics done - A/D converter-  resistor, temp/humidity sensor then the thermistor/LCD projects. Very educational! sudo apt install arduino sudo tail -f /var/log/syslog Plug in Arduino Uno R3 to printer cable ... Arduino Intro on Linux Mint