Project: eti vocoder – comparator pcb added
The Vocoder's triangle waves become square. WARNING: it all gets a bit loud :) ETI Vocoder constructional project reproduced with…
Project: penny organ – hand calculation of frequencies
An afternoon of decimal to hexadecimal conversions, mind-bending hex to binary conversions and Arduino C coding.
Project: penny organ – playing with the ad9833
Feeling somewhat daunted by a complex data sheet, I take the first steps towards using the AD9833 to make a…
Postbag supplement: unseen stuff from postbag #53
Eight minutes of stuff I cut from Postbag 53. CP2102 MICRO USB to UART TTL Module 6Pin Serial Converter STC…
Playing with sine and triangle waves
Teaser video from my afternoon playing with the AD9833 Programmable Waveform Generator
Julian’s postbag #53 – patreon, 12v cob led, buck psu
My Patreon page: https://www.patreon.com/julian256?ty=h eBay links for items in this video: Check out Super Bright 17cm 5W 84 COB LED…
Internal resistance check of littokala lii-300 battery charger
When I reviewed this battery charger, I questioned whether the cell internal resistance check was reliable. I tested a range…
Update: 30 watt led garden solar light is still working
The 30 Watt LED garden solar light still works! It comes on at twilight and only stays on for about…
Teardown fix: hubsan x4 quadcopter and motors
My mate Mark (who's a bit gung ho at the best of times) has so far broken 2 Hubsan quads…
Project: eti vocoder – construction of oscillator pcb
Updates to the ETI Vocoder project - construction of an oscillator PCB for the excitation section of the unit. Capacitor…