A selection of parts from my favourite eBay seller:
ETI Vocoder constructional project reproduced with permission from Wimborne Publishing Ltd. http://www.epemag.com
FranLab: Diode Steering For Displays:
https://youtu.be/JNbDdnEpAOQ
20Pcs JRC4558D JRC 4558D DIP8 OPAMP OP AMPS CHIP IC Good Quality http://www.ebay.co.uk/itm/-/201263529495?roken=cUgayN via @eBay_UK
20PCS TL072 TL072CP DIP-8 LOW NOISE J-FET DUAL OP-AMP IC NEW http://www.ebay.co.uk/itm/-/311264898876?roken=cUgayN via @eBay_UK
20Pcs Double Side Prototype PCB Tinned breadBoard 5x7 4x6 3x7 2x8CM Each 5Pcs http://www.ebay.co.uk/itm/-/310685382442?roken=cUgayN via @eBay_UK
Check out what I found. 2PCS IIC I2C Logic Level Converter Bi-Directional Module 5V to 3.3V For Arduino http://www.ebay.co.uk/itm/-/310965629388?roken=cUgayN via @eBay_UK
Check out what I found. 2PCS IIC I2C Level Conversion Module Sensor 5V-3V System For Arduino 5V to 3V http://www.ebay.co.uk/itm/-/400851409352?roken=cUgayN via @eBay_UK
Check out what I found. 5PCS New 4.5V-7V to 3.3V AMS1117-3.3V Power Supply Module AMS1117-3.3 http://www.ebay.co.uk/itm/-/400709027032?roken=cUgayN via @eBay_UK
Check out what I found. 20Pcs Double Side Prototype PCB Tinned breadBoard 5x7 4x6 3x7 2x8CM Each 5Pcs http://www.ebay.co.uk/itm/-/310685382442?roken=cUgayN via @eBay_UK
Check out what I found. Capacitive Digital Touch Sensor Hand Detection Module For Arduino capacitance http://www.ebay.co.uk/itm/-/310701815225?roken=cUgayN via @eBay_UK
Check out what I found. New MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C keyboard http://www.ebay.co.uk/itm/-/201086257309?roken=cUgayN via @eBay_UK
Check out what I found. NE555+CD4017 LED Light Water DIY Kits Electronic suite Water lamp module Red http://www.ebay.co.uk/itm/-/200908307742?roken=cUgayN via @eBay_UK
ETI Vocoder constructional project reproduced with permission from Wimborne Publishing Ltd. http://www.epemag.com
FranLab: Diode Steering For Displays:
https://youtu.be/JNbDdnEpAOQ
20Pcs JRC4558D JRC 4558D DIP8 OPAMP OP AMPS CHIP IC Good Quality http://www.ebay.co.uk/itm/-/201263529495?roken=cUgayN via @eBay_UK
20PCS TL072 TL072CP DIP-8 LOW NOISE J-FET DUAL OP-AMP IC NEW http://www.ebay.co.uk/itm/-/311264898876?roken=cUgayN via @eBay_UK
20Pcs Double Side Prototype PCB Tinned breadBoard 5x7 4x6 3x7 2x8CM Each 5Pcs http://www.ebay.co.uk/itm/-/310685382442?roken=cUgayN via @eBay_UK
Check out what I found. 2PCS IIC I2C Logic Level Converter Bi-Directional Module 5V to 3.3V For Arduino http://www.ebay.co.uk/itm/-/310965629388?roken=cUgayN via @eBay_UK
Check out what I found. 2PCS IIC I2C Level Conversion Module Sensor 5V-3V System For Arduino 5V to 3V http://www.ebay.co.uk/itm/-/400851409352?roken=cUgayN via @eBay_UK
Check out what I found. 5PCS New 4.5V-7V to 3.3V AMS1117-3.3V Power Supply Module AMS1117-3.3 http://www.ebay.co.uk/itm/-/400709027032?roken=cUgayN via @eBay_UK
Check out what I found. 20Pcs Double Side Prototype PCB Tinned breadBoard 5x7 4x6 3x7 2x8CM Each 5Pcs http://www.ebay.co.uk/itm/-/310685382442?roken=cUgayN via @eBay_UK
Check out what I found. Capacitive Digital Touch Sensor Hand Detection Module For Arduino capacitance http://www.ebay.co.uk/itm/-/310701815225?roken=cUgayN via @eBay_UK
Check out what I found. New MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C keyboard http://www.ebay.co.uk/itm/-/201086257309?roken=cUgayN via @eBay_UK
Check out what I found. NE555+CD4017 LED Light Water DIY Kits Electronic suite Water lamp module Red http://www.ebay.co.uk/itm/-/200908307742?roken=cUgayN via @eBay_UK
What ever happened of your diode PROM?
Seeing that little "HOW IT WORKS" box on your screen took me right back to my youth! 🙂
Ha. I knew it came from Alice just from the description. Funny stuff.
my second liked electronics channel after eev. subscribed 🙂
OpAmps and other ESD-stuff packaged with this cheap chinese foam!!! Hope for you it's not damaged.
Cool!
Yes, in the UK drilling coins is legal, if frowned upon 🙂
oh really cool! you got the MPR121 I talked about 😀
@pete r:
First of all, you need the tach output AND ground connected. I think what I would do is attach an interrupt to the pin that you have the tach connected to. Every time it fires (either every rotation or half-rotation, IIRC), your program will jump to your interrupt routine. What you can do is set up a timer; if you've not gone into the interrupt routine in so many seconds, declare a fault and set off the buzzer.
Make sure to check your datasheets and see if the pulses coming out of the tach are long enough for the arduino to reliably trigger on, there is a lower limit. If the pulses are too short, you might be able to get by with adding a small capacitor to stretch out the pulses.
Let me know if you need more help!
Since seeing your videos. Ive bought some items from far east sellers. only takes about 20 days to get to Scotland. I got a kit of a "hot" LM386 amp. That was hot when I got the voltage polarity wrong. Works ok now tho. Ive got some more parts in the post today. A 555 and 4017 with a lot of leds, kit. see if I can burn my fingers building that up. 🙂
great vid
I had reasonably good experience with atxmega32e5 for capacitive touch input. CY8CMBR2044 ain't bad as well, if you would like to omit programming uC.