13.2.0
2023-06-14
Ω Audio Scope:
• major re-design of the controls and the FFT mode. In FFT mode, the frequency of the signal with the highest amplitude is now displayed.
Ω Audio Function Generator:
• now supporting 3x16 frequency presets, all fully customisable. Use the arrow buttons to switch between them or just slide the controls.
• new setting to change the frequency sliders step size (0.01 – 100).
13.1.1
2023-05-18
Audio Scope FFT mode bugfix
13.1.0
2023-05-13
New Tools:
Ω TL431 tool about the popular three-terminal adjustable shunt regulator
Ω Full wave rectifier with center tab
Improvements:
Ω Audio Scope: improved FFT mode (more scaling options, higher accuracy)
Ω Zener Diode Tool: additional input for the load current
Fixes:
Ω 7-segment LED Tool display bugfix
13.0.1
2023-03-06
Ω Fixed loading issue of the 7400 tool
13.0.0
2023-02-23
New Tools:
Ω Frequency Tools: new tool for calculating the load capacitors of a crystal oscillator circuit
Ω 555 Tools: example of a power on delay circuit using the 555 Timer IC
Ω Capacitor Tools: new tool for demonstrating charging of a capacitor using a constant current source
Extended Settings:
Ω new global setting for preferred E-Series and tolerance of components
12.7.0
2022-10-29
Ω Function Generator
• Frequency Sweep: added new sweep option. You can now choose between fixed and variable frequency sweeps. A custom sweep step size (Hz) and a custom sweep step duration (s) can be freely selected. This gives you a whole new way to customise your frequency sweeps!
• repeated Play/Pause caused R+L signals going out of phase in some cases. This is now fixed.
• change popup styles
Ω SBC Tools
• added new section for Espressif Systems modules and boards
• updated datasets of all the other SBC Tools
Ω PCB Trace Width Tools
• added option to enter a custom ρ (Rho) value
Ω Smaller fixes and improvements all over the App
12.6.1
2022-08-13
Ω bugfixes and improvements
12.6.0
2022-06-15
Ω New Tools:
• Center Frequency Tool for calculating the center frequency and Q-factor of a bandpass or notch filter
• LED delay circuit using an RC circuit and a NPN transistor
Ω Function Generator:
• Dual-Tone: Fixing distortions when changing frequency during playback. Fixing an issue with the phase value not being applied when restarting or when changing tabs
• Music Notes: added play/pause button to the music notes view
Ω Smaller fixes and improvements all over the App
12.5.2
2022-01-06
Ω bugfixes and improvements
12.5.1
2021-12-18
Ω The EE ToolKit now also runs on Mac computers with Apple silicon
12.5.0
2021-12-04
Ω Function Generator:
• several usability optimisations and improvements
• fixing an issue with frequency input range checks
• fix for volume change events not working anymore with iOS 15
• optimisations for the preset settings popover (first Tab)
Ω support for iPad mini 6
Ω bugfix for the PCB Trace Width tool
Ω Smaller fixes and improvements all over the App
12.4.0
2021-08-28
Ω New Tools:
• BCD to 7-Segment using 74HC4511 (LED Tools)
• LED dot/bar application using LM3914 (LED Tools)
• Bit to dB tool for converting Bit depth to Decibels (Decibel Tools)
Ω Function Generator:
• new Fine-tune popover for fine-tuning frequency and amplitude
• new system volume popover
• fixed memory leak in the Sweep repeat implementation
• repeat button in the Sweep tab now has 3 functions: off, repeat, siren-mode
• refactored Master Volume control
• added fine-tuning option to the musical notes section
Ω Tools which use ICs in the example schematic have a link to the PDF datasheet of that respective IC now accessible via a sidebar link
Ω Corrected swapped Vin and RL description in the loaded voltage divider tool
Ω Fixed a bug in the Diodes tool
Ω Corrected formula for the PCB Trace Width tools
Ω Smaller fixes and improvements all over the App
12.3.0
2021-02-13
The brand-new EE ToolKit is here! Happy to present great new tools, great improvements and handy new feature additions.
Ω New Tools:
• Comparator tools (inverting, non-inverting). Easy to understand and very useful for experimenting with OpAmp comparator circuits. With comprehensive additional explanations and illustrations. Available via the OpAmp Circuit Tools.
• Schmitt-Trigger tools / Comparator with Hysteresis (inverting, non-inverting). Easy to understand and very useful for experimenting and learning about comparator circuits with hysteresis. Additional text explaining how comparators can be extended to support hysteresis and thus two different threshold levels. Available via the OpAmp Circuit Tools.
• Inrush current calculator for Load Switches (using the TPS2292x from Texas Instruments as an example). This is part of the Capacitor Charge Tools.
Ω Notes: from this version onwards, you can save own drawings plus text notes for each tool individually. An overview of all stored notes and drawings is provided via the side menu on the main page.
Ω Zooming on info pages on iPads is working much smoother now
Ω Frequency Pitch Detector is now fully unlocked also in the free version
Ω Smaller fixes and improvements all over the App
12.2.2
2020-10-22
Ω consolidated App versions
Ω bugfixes and improvements
10.2.1
2020-09-19
Ω updates for iOS 14
Ω new Notes popover. Now you can make notes for each tool individually. Via the home screen you can get an overview of all of your notes.
10.2.0
2020-08-25
Ω Component Tools:
• added new tool for the 4000 IC Series (consists of 127 different ICs)
• improved search function of the 7400 tool
• fixed datasheets of Diodes tool not loading issue
Ω Single Board Computer Tools:
• added 6 more Orange Pi boards (Orange Pi 4B, Orange Pi 4, Orange Pi Zero LTS, Orange Pi 3, Orange Pi 3g-Iot-B, Orange Pi 3g-Iot-A)
• added Teensy Boards
• fixed page size issue for iOS devices without a home button
• fixed image invert issue in SBC tools and Info pages
Ω Audio Function Generator:
• support for AirPlay 2 with multi-room
• new “AUTO” button in the oscilloscope view.
• the Min/Max frequency slider values and the max sweep slider value are now changed to buttons that open a popup window for immediate means to enter a new value. Browsing to the settings page to change these values is no longer needed.
• musical notes popover has been improved. The window size and button size are now as large as possible for each respective iOS device.
• added settings option to allow mixing of audio with external sources. Please Note: for streaming audio over AirPlay 2, this option must be disabled.
• fixed oscilloscope issue when frequency slider is set to logarithmic.
• fixed a phase issue in the Dual Function Generator. When changing frequencies, the phase went out of sync in some cases.
• timed playback fix in the Dual Tone Generator
• sweep counter resets to the exact start value when completed
Many other optimizations and improvements under the hood to make the App more future proof for upcoming iOS versions, screen size changes, etc.
10.1.1
2020-02-23
- fixed misaligned images in the active filters tool
- fixed a calculation error in the loaded voltage divider tool
10.1.0
2020-02-22
Ω New tools:
- loaded voltage divider calculator (Basic Tools)
- frequency and time (Frequency Tools)
Ω Change the brown color of the resistor tools to be less red
Ω Added dedicated input field for custom material resistivity (Wire Ampacity Tool)
Ω improved and faster loading of pdf files
Ω Fixed issue with loading the German version of the tutorial page
Ω Fixed an issue with the control of the volume slider of the Function Generator part on 11" and 12.9" iPad Pro’s
Ω smaller fixes and improvements all over the App
10.0.0
2019-10-03
The brand-new EE ToolKit PRO for iPad is here! I am very happy to present yet again a very big update with 20 great new tools, great improvements and feature additions. Here is the summary:
Ω New Tools:
• Active Filters: six new active filter tools including both inverting and non-inverting Low-Pass, High-Pass and Band-Pass filters with Operational Amplifiers.
• Switches: everything about SPST, SPDT, DPDT, Special Switches and more. Including also new tools for multiway switching and latching switching.
• Rectifiers: new tools for calculating half wave and full wave rectifier circuits. This includes circuits with a single diode and bridge rectifiers.
• LED Tool extensions: new tools in the LED section including Infrared light barrier, touch sensors (resistive and capacitive), LED water level sensors, light sensor and dark sensor.
Ω Update for iOS 13
Ω From iOS 13.0 onwards, the background appearance will be auto-detected at the first time start (Light or Dark appearance)
Ω Added Raspberry Pi 4
Ω Added USB SuperSpeed plugs and receptacles with pinout
Ω Fix saving jpg images in the SBC tools
Ω Fix DC/DC Regulator (Boost) tool opens wrong datasheet
Ω smaller fixes and improvements all over the App.
Thank you very much for using the EE ToolKit! If you have a moment, please leave a review in the App Store. By doing that, you are really helping a lot so the App can be further developed and improved. Thank you so much! - tom
9.2.2
2019-06-21
Ω fixed formula error in the series RLC calculator.
9.2.1
2019-05-04
fixed navigation issue which happened only on a small number of devices ("X" asset for exiting tools was not visible).
9.2.0
2019-04-29
The new EE ToolKit is here and it brings many updates, new tools and great improvements. Here is the summary:
New Tools:
• EIA-96 Code to Resistor value converter
• 4-digit SMD Code to Resistor value and color code converter
• DMX DIP Switch Tool (Number Systems Tools)
• P-channel MOSFET Tool
• capacitor equivalents tool (in the Basic Tools section). Find capacitor circuit for target value
Ω Audio Function Generator
• new scope view with option to change the TIME/DIV scale and the automatic measurement of the frequency period length.
• performance improvements, faster loading of views and controls.
• more smooth on/off switching when the BPM feature is activated
• higher accuracy for the period length measurement in the scope view
• improved tuning of the global ramp up/down timing parameters
• improved the frequency sweep (the phase of the left and right channel is now constant during the duration of the sweep)
• fixed issue with soft start/soft stop of tones (no more click noised when starting or stopping of tones).
• fixed delayed playback timer logic in the Dual-Tone generator.
• fixed an issue with the volume control during the volume sweep and the phase setting
• the Function Generator now allows mixing with audio from active sessions in other audio apps (active playback from other audio apps no longer gets muted or stopped when the Function Generator in the EE ToolKit becomes active)
Ω Native support for iPhone XS Max, iPhone XR, 11” iPad Pro and 12.9” iPad Pro
Ω Reworked extended voltage divider tool. The manual selection is now the primary method to select the calculation method
Ω Facelift of the component tools: 7400, BJT, Microcontroller, Linear Regulators, Diodes, MOSFETs and SMD packages. Improved presentation of the data in the complete component tools section
Ω fix for misaligned pin numbers in the USB-C section
Ω smaller fixes and improvements all over the App. Stability and performance improvements.
Thank you very much for using the EE ToolKit! If you have a moment, please leave a review in the App Store. By doing that, you are really helping a lot so the App can be further developed and improved. Thank you so much! - tom
9.1.1
2018-12-13
In the previous version of the EE ToolKit some labels were presented in the wrong order. This new release fixes the issue.
9.1.0
2018-12-09
NEW DARK MODE, NEW TOOLS AND MORE FEATURES
This is the brand-new EE ToolKit! This time I am proud to present the long-awaited Dark Mode. Easily configurable in the settings menu, this new UI lets the EE ToolKit shine in a whole new light.
Ω new Flashlight Stroboscope! This tool allows you to control the flashlight of your device so you can use it just like a stroboscope. Just define a custom τ-on and τ-off time and tap on the power button to activate.
Ω new Ceramic Capacitor Codes Tool: X7R, Y5V, NP0, etc. A new tool in the RLC section about capacitor groups and application classes.
Ω extended the Single Board Computers tool:
• 7 additional Arduino Boards (Linino One, MKR FOX 1200, MKR GSM 1400, MKR Vidor 4000, MKR WAN 1300, MKR WiFi 1010, Yun Rev 2).
• And also the BBC micro:bit is now part of the collection.
Ω Audio Function Generator:
• new feature: “Start Playback after delay”. Together with the previously existing “Stop Playback after timeout”, the audio can now be started with a delay and stopped after a timeout. Please go to the Function Generator’s settings page for configuration.
• fix for click noise during repeat mode of Amplitude Sweep playback.
Ω Other Optimizations and Fixes:
• added USB-C connector in the component reference section
• added an additional formula to the LDO Info page showing an example calculation that includes the tolerances of the components
• improved method of entering negative values
• improved Settings page
• User Manual is now loaded directly from the EE ToolKit webpage
• fix for scrolling bug in SBC tools
• fix for temperature conversion bug
• fixed wiring error in the cat5 crossover cable
• voltage divider auto format fix (extended part)
Thank you very much for using the EE ToolKit! If you have a moment, please leave a review in the App Store. By doing that, you are really helping a lot so the App can be further developed and improved. Thank you so much! - tom
9.0.0
2018-07-03
MAJOR UPDATES, IMPROVEMENTS AND NEW TOOLS!
The brand-new EE ToolKit is here! Yet again the update is a very big one and I am proud to announce lots of new tools, improvements and feature additions to you! I have put a lot of hard work into this update and I really hope you will like it as much as I do!
Ω new tool for Single Board Computers which provides a very nicely structured navigation through the majority of currently available boards (in total 114 different boards!!!). Including pinout descriptions, getting started, schematics, documentation, manuals, code examples, etc.
Boards included:
- Beagleboard (10 Boards)
- Raspberry Pi (13 Boards)
- Arduino (23 Boards)
- Orange Pi (20 Boards)
- Banana Pi (16 Boards)
- Nano Pi (18 Boards)
- Cubieboard (10 Boards)
- ODROID (4 Boards)
Ω major 7400 database additions and update. Added almost 200 new datasheets for the LV, LVC, HCT and HC series, bringing this database up to date with the latest changes and additions.
Ω components section: verified all datasheet links and fixed those that were not working anymore. Now all links to datasheets must be working – if not, please let me know.
Ω added extended search function to all component reference tools. Watch out for the magnifying glass icon in the sidebar menu.
Ω added zoom function for all the images and formulas that are shown in the Info Views. Just tap on the image and zoom in.
Ω extended the Voltage Divider Calculator. This tool now consists of two different tools: a default and an extended version. The new extended version of this tool requires three values and from these three, it calculates the missing fourth. Any combination is allowed. Please make sure that you don't enter invalid values, like Vout being higher than Vin, which should never be the case (the tool shows invalid input combinations, nevertheless).
Ω global asset optimizations, storage management. Now the App provides even more content but needs much less space on your device.
Ω added check for newer version available on the App store.
Ω fix for not updating keyboard on BIN DEC HEX OCT tool.
Ω fix for conversion issue on the Trace Resistance tool.
Ω the FET tool is now available in the Transistor section.
Ω added Vp-p to RMS conversion.
Ω added forward and reverse power calculation (with a coax RF wattmeter) to VSWR tool.
Ω improved navigation in the favorites view popover.
Ω added copper thickness in ounces (oz) to the PCB trace-width tools.
Ω added fine-tuning option for the left and right phase setting in the function generator tool.
Ω smaller fixes and improvements, graphics optimizations all over the App.
Thank you very much for using the EE ToolKit! If you have a moment, please leave a review in the App Store. By doing that, you are really helping a lot so the App can be further developed and improved. Thank you so much! - tom