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ADDING AC LIGHT
Instructions from XIAO ESP32 Home Automation Shield
We added an AC cord to the AC terminal of the home automation device. To make sure the device is getting the proper voltage, we check the AC voltage using a multimeter. Next, we connected an AC light to the relay module's AC terminals and turned on...

Talker/80 was live on TrashTalk Live #8
Log from Talker/80 for the TRS-80 Model 1, 3, and 4
10/24/2020: I gave a talk about Talker/80 on TrashTalk Live #8: The INPs and OUTs of Talker/80, A Modern Voice Synthesizer for the TRS-80. Thanks to Pete Cetinski (TrashTalk host) and Arno Puder (known for his TRS-IO) for inviting me; here is the PDF...

AC Circuit Tested
Log from Air Gesture AC Dimmer/Switch
The zero-crossing and AC switching circuit is tested and working. Next test is PWM. Those 6x10K resistors are supposed to be 2x33K. Didn't have any 33K half watt resistors. Therefore circuit will be smaller.Please don't build and test a circuit like...

Filament AC voltage
Log from VFD watch
For filament we can use DC or AC voltage but AC has superiority over DC. If the filament is driven with a DC voltage there will be a voltage gradient across its length. This means the end of the display with the more positive filament voltage will have...

"Completely-functional", Bussifying ~80%, and a few other things...
Log from sdramThingZero - 133MS/s 32-bit Logic Analyzer
The address thing of the past few logs is... cool-that-it's-possible. If you don't recall from a while-back, the idea was to use a *default* address-location to use as a jumping-point to all other address-locations. A bit simplified, I'd write to address...

Switching AC Amplifier
Hacker page by Incomplete Circuits
This is my attempt at making a switching AC amplifier:I learned from this link:electriccircuits.yolasite.comThe is issue with this circuit is that the amplifier is not amplifying the input signal properly.Output transient:Too much power is lost during...

Testing AC powered equipment.
Log from Multimeter +
Desk-top oscilloscopes are very common in engineering labs. They are the first aid help devices when wave-forms need to be viewed and analyzed. Taking reads from an AC powered equipment with oscilloscopes may create a low impedance short between an o-scope...

New shipment of 80 Timers arrived..some broken.
Log from Tick Tock Timer
A shipment of 80 timers arrived last week. 5 timers had broken screens. It looks customs may have gone to town on the box poorly re wrapping the PCBs afterwards. I will send them back to the factory for replacement down the track.

Multi-boot Multicomp (Part 2)
Log from 3-Chip Z80 Design
I've got the BIOS loading for Multi-boot Multicomp. It boots up to the Multi-boot prompt. > Available Commands: :ccxxxxiibbbbbb Load Intel-Hex file record Rxxxx Run from address xxxx Sddd System boot Iddd Init: Format directory Pddd[,xxxx] PutSys: write...

AC vs DC Coupling
Log from Oscilloscope Vector Game Display
Some audio adapters use AC coupling (i.e. an output capacitor), while others work down to DC. The difference for audio is subtle, but for a vector display, it's huge. Here's an illustration using a DC-coupled adapter and the AC/DC switches...

Industrial Control Application
Details from Industrial Control Application
Thanks to RT-Thread OpenSource Community Developer #hyafz contributed and opensource this application.1 Introduction plccore is a RT-Thread-based runtime core for programmable logic controller (PLC), together with the upper computer programming...

Taming AC, remotely
Log from Hackaday World Create Day at LearnOBots Labs
Another training session was underway where students had to make an application using MIT App Inventor. The interactive app would allow the user to control electrical appliances remotely. The control signals are sent via Bluetooth and are received by...

AC Calibration: Conversion factors
Log from Power Analyzer based on a COTS Power Monitoring IC
In my previous project log, I wanted to send the calibration factor and the expected value directly to the teensy. I found it was easier to just calculate the conversion factor directly and send that value over. This saves some calculations and makes...

Just released version 7_8_2_226 - Up to 80% less memory usage! :-)
Log from Visuino
Just released Visuino 7_8_2_226https://www.visuino.com Significantly reduced memory usage by the generated code ( Up to 80% less memory usage! )Added ESP32 Servo supportAdded support for I2C address scramblersAdded support for Heltec ESP32...

ORDERED THE MOTHERBOARDS.
Log from Z80 overpowered computer
My old boards were an incredible step forward, but they had limited functionality, were not built with power/input/simplicity in mind, sometimes were unreliable, and were starting to die.The new boards have proper ground planes plus some cool new features...

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