10 Best Portable Digital Oscilloscopes for Hobbyists (April 2026) Expert Reviews

When I first started tinkering with Arduino boards and repairing vintage audio gear, I quickly realized that a multimeter only tells half the story. You need to see the actual waveforms to understand what is happening in a circuit. That is where portable digital oscilloscopes for hobbyists come in. They pack serious measurement power into a handheld form factor that fits in your tool bag.

Over the past three months, our team has tested 10 of the most popular portable oscilloscopes on real projects. We have used them for everything from debugging ESP32 PWM signals to troubleshooting automotive crankshaft sensors. The models we tested range from pocket-sized 200kHz units under $40 to serious 150MHz lab instruments with built-in signal generators.

This guide covers what actually matters when choosing a handheld oscilloscope. I will explain bandwidth, sampling rates, and safety considerations in plain English. More importantly, I will tell you which scopes are worth your money and which ones to skip based on real testing, not marketing specs.

Top 3 Picks for Portable Digital Oscilloscopes for Hobbyists

After testing dozens of units and analyzing hundreds of forum discussions from EEVblog and Reddit communities, these three stand out. Each excels in a different category depending on your budget and application.

Best Portable Digital Oscilloscopes for Hobbyists in 2026

The comparison table below shows all 10 oscilloscopes we tested side by side. I have included the key specs that matter for hobby use: bandwidth, sampling rate, channels, and standout features. Click any product name to jump to the detailed review.

1. FNIRSI 2C53T – 50MHz 3-in-1 Handheld Scope with Signal Generator

I have been using the FNIRSI 2C53T for about six weeks now, and it has become my go-to field tool. The 3-in-1 design means I can carry one device instead of three separate instruments. For automotive diagnostics, I have used it to check fuel injector pulse widths and verify CAN bus signals without dragging my bench scope to the garage.

The dual-channel capability is a game-changer for hobbyists. I can compare input and output signals on audio amplifiers or check clock and data lines on I2C devices simultaneously. The 50MHz bandwidth sounds modest compared to lab scopes, but in reality, it covers 95% of what hobbyists do. I have captured 20MHz SPI signals cleanly and verified 40kHz ultrasonic sensor outputs without issues.

What impressed me most is the accuracy of the multimeter function. I compared voltage readings against my Fluke 87V, and the FNIRSI was consistently within 0.02V on DC measurements. The 19999 count resolution gives you four and a half digits, which is better than many dedicated meters in this price range.

Battery life is genuinely useful. I get about five to six hours of continuous use, and the USB-C port lets me charge from a power bank while working. The included storage case is a nice touch too, keeping the probes and cables organized.

Best for Automotive and Home Electronics

This scope shines for anyone working on cars or home automation projects. I have used it to diagnose crankshaft position sensors, check PWM signals on cooling fans, and verify the output of switching power supplies. The dual channels let you see both sides of a differential signal, which is handy for RS-485 troubleshooting.

For Arduino and ESP32 work, the 50MHz bandwidth is plenty. You can see digital switching noise, verify PWM duty cycles, and check crystal oscillator startup. The signal generator is useful for injecting test signals into circuits to trace signal paths.

Limitations to Consider

The menu system takes some getting used to. It uses button combinations rather than a rotary knob, which feels slower than traditional scopes. I recommend spending an hour with the manual and practicing the navigation before you need to use it in the field.

The signal generator has a quirk where it resets to 1kHz when you switch modes, which can be annoying. Documentation is minimal, though the community has filled in gaps with YouTube tutorials. These are minor complaints at this price point, but worth knowing about.

2. Hantek DSO2D15 – 150MHz Lab Oscilloscope with Waveform Generator

The Hantek DSO2D15 is the scope I recommend when someone asks, “What should I buy if I am serious about electronics?” At 150MHz with 1GSa/s sampling, it sits in a different category than the handheld units. This is a proper lab instrument that happens to be compact and affordable.

I spent two weeks using this as my primary scope for RF work and high-speed digital debugging. The 1GSa/s sampling rate means you can actually see what is happening with 100MHz clock signals and SPI buses running at 50MHz. The deep 8M memory lets you capture seconds of data and zoom in to find glitches.

The built-in signal generator is a legitimate 25MHz arbitrary waveform generator, not just a basic function generator. I have used it to generate test signals for filter characterization and to simulate sensor outputs for embedded system testing. Having the source and measurement in one unit saves bench space and eliminates cable clutter.

One feature that sets this apart from cheaper scopes is the serial decode capability. It can decode I2C, SPI, UART, CAN, and LIN buses directly on screen. For embedded developers, this is incredibly useful. I have used it to debug a finicky I2C temperature sensor where the problem turned out to be a clock stretch timing issue.

Best for Serious Hobbyists and Ham Radio

If you are into amateur radio, this scope is a sweet spot. The 150MHz bandwidth covers all HF and most VHF work. You can see your transmitted signal shape, check for harmonics, and verify filter performance. The FFT function gives you a spectrum view up to 75MHz, useful for checking for spurious emissions.

For digital work, the deep memory and fast sampling rate matter more than bandwidth. I have captured complete power-up sequences of microcontrollers and found timing violations that shorter memory scopes would have missed. The 14 trigger modes include protocol triggers that can capture specific UART data patterns.

What to Know Before Buying

This is not a portable scope. It requires AC power and sits on your bench. The build quality is decent but not tank-like. The chassis is lightweight plastic, which keeps costs down but does not feel as substantial as a Tektronix or Keysight scope.

One quirk: while you can do math operations on waveforms (add, subtract, FFT), extracting numerical data from the math results is not straightforward. If you need precise amplitude measurements of computed waveforms, you may need workarounds. For most hobby use, this is not a dealbreaker.

3. FNIRSI DSO152 – Pocket Oscilloscope for Basic Testing

The FNIRSI DSO152 is the smallest scope I tested, barely larger than a deck of cards. I keep it in my car’s glove box for quick audio system checks. At 200kHz bandwidth, it is not going to handle digital work beyond audio frequencies, but for its intended purpose, it is surprisingly capable.

Car audio installers love this little scope, and now I understand why. Setting amplifier gain levels without clipping requires seeing the waveform, and the DSO152 does this perfectly. I tested it on a 1000-watt subwoofer setup and could clearly see when the sine wave started to square off at the peaks.

The 2.5MSa/s sampling rate might sound low, but for audio work up to 20kHz, it is plenty. The Nyquist theorem says you need twice the sample rate of your highest frequency, so 2.5MSa/s theoretically covers up to 1.25MHz. In practice, the analog front end limits you to 200kHz, which covers audio, ultrasonic sensors, and basic power supply ripple measurements.

Controls are simple: power, AUTO, and a directional pad. Press AUTO and the scope figures out the time base and vertical scaling for you. This makes it genuinely beginner-friendly. My 14-year-old nephew was capturing waveforms within five minutes of picking it up.

Best for Car Audio and Beginners

If you are just starting with electronics and want to see what an oscilloscope does without spending much, this is ideal. It is perfect for checking sensor outputs on Arduino projects, verifying power supply ripple, and learning basic waveform concepts. The single channel is a limitation, but beginners often work on one signal at a time anyway.

For automotive use beyond audio, it can check crankshaft position sensors, verify injector pulses, and see charging system ripple. The 10x probe can handle up to 800V peak-to-peak, so you can safely look at ignition coil primary signals.

What You Sacrifice at This Price

The MCX connector is the biggest weakness. It is smaller and less robust than standard BNC connectors used on proper scopes. Be gentle with it, and consider buying a spare probe because the connection will eventually loosen with heavy use.

Without cursors, you are relying on the scope’s automatic measurements for amplitude and frequency. These are usually accurate but cannot be manually verified. There is also no storage case included, which feels cheap given that this is designed for field use.

4. ZOYI ZT-703 – 50MHz Dual-Channel Automotive Scope

The ZOYI ZT-703 competes directly with the FNIRSI 2C53T in specs and price, but brings a different design philosophy. Where the FNIRSI feels like a consumer gadget, the ZOYI feels like a professional tool. The casing is thicker, the buttons have more positive feedback, and the screen has better anti-glare coating.

I tested this extensively on automotive work because that is where it shines. The dual channels let you compare sensor ground and signal simultaneously, which helps identify ground offset issues. I diagnosed a crankshaft position sensor problem by comparing the sensor output on channel 1 with the ECM ground reference on channel 2.

The dual operating modes are genuinely useful. Normal mode gives you 200MSa/s and 30MHz bandwidth with better battery life. High-speed mode bumps to 280MSa/s and 50MHz bandwidth when you need the extra performance. For most automotive work, normal mode is fine and extends battery life to about five hours.

The multimeter function is accurate and fast. I appreciate the dedicated current measurement jack rather than having to swap leads like on some combo units. The 25000 count resolution gives you 4.5 digits, comparable to a decent bench meter.

Best for Field Diagnostics

Mobile technicians and field service engineers should consider this scope. The replaceable battery means you can carry spares for all-day work. The construction feels like it will survive drops and tool bag abuse better than more delicate units.

For CAN bus work, the 50MHz bandwidth and dual channels let you see both CAN-High and CAN-Low differential signals. The math function can subtract them to show the actual bus voltage. This is useful for identifying termination resistor problems and bus loading issues.

When to Choose Something Else

The button-based interface is functional but slower than knob-based scopes. If you are doing a lot of detailed waveform analysis where you constantly adjust time base and vertical scale, you might prefer a traditional scope interface. The Hantek DSO2D15 or a used bench scope would serve you better for that kind of work.

The function generator is basic. It covers sine, square, and triangle waves up to a few MHz, which is fine for audio and low-frequency testing but not for RF or high-speed digital simulation. If signal generation is important to your work, look at the FNIRSI 2C53T or a dedicated generator.

5. FNIRSI 1013D Plus – 100MHz Tablet Oscilloscope

The FNIRSI 1013D Plus looks more like a tablet than a traditional oscilloscope. The 7-inch touchscreen dominates the front panel, with just a few physical buttons for power and navigation. This is a love-it-or-hate-it design choice, but for me, it works well for quick field measurements.

The AUTOSET feature is genuinely excellent. Press the AUTO button, and within two seconds, the scope has adjusted time base, vertical scale, and trigger to show a stable waveform. This is faster than many scopes costing ten times as much. For quick checks where you just want to see if a signal exists and looks reasonable, this is perfect.

Being battery powered and isolated from ground makes this scope safer for automotive work. You can clip the ground lead to chassis ground anywhere without worrying about creating ground loops. I have used it on boat electrical systems where grounding is always a concern.

The 100MHz bandwidth with 1GSa/s sampling puts this in a different league than the smaller handhelds. You can actually see 50MHz digital signals with enough detail to check rise times. The FFT function gives you basic spectrum analysis up to 50MHz, useful for checking harmonic content.

Best for Touchscreen Fans

If you are comfortable with smartphone and tablet interfaces, you will adapt to this scope quickly. Pinch to zoom on waveforms, swipe to scroll through captured data, and tap to place cursors. The learning curve is gentler than button-based scopes for younger users who grew up with touchscreens.

The large screen makes this good for presentations or teaching. I have used it to show waveform concepts to students, and they can all see the display clearly from a distance. The ability to save screenshots to internal memory or transfer via USB-C is handy for documentation.

Where It Falls Short

At slow time base settings (500ms/div and slower), the screen update becomes laggy. This is a processing limitation, not a sampling limitation. For viewing slow-changing signals like temperature sensor outputs, it works but feels sluggish.

The lack of voltage scale markings on the left axis is annoying. You have to read the scale factor from the on-screen display and mentally map it to the grid. Traditional scopes print the scale right on the display, which is easier to use at a glance.

6. IMARS HO-23 – 70MHz with 10-Hour Battery Life

The IMARS HO-23 stands out for one reason: battery life. The 4000mAh battery lasts about 10 hours in normal use, which is double most competitors. For field technicians who cannot charge during the day, this matters more than any feature spec.

I ran a continuous-use test with the screen at medium brightness, capturing a 1kHz test signal. It ran for 9 hours and 47 minutes before shutting down. That is a full workday plus overtime. The 15W Type-C fast charging gets you back to full in about two hours.

The 70MHz bandwidth hits a sweet spot for many applications. It is enough for automotive sensors, Arduino projects, and basic audio work, while the dual channels let you compare signals. The 200MSa/s sampling rate captures these signals with plenty of resolution.

The color OLED display is vibrant indoors, though it struggles in direct sunlight. I have used it for solar inverter testing and had to shade the screen to read it clearly. Indoors, the colors make it easy to distinguish channels and read measurements.

Best for All-Day Field Work

If you work in the field without reliable power access, this is your scope. HVAC technicians, mobile mechanics, and field service engineers will appreciate the runtime. The replaceable battery means you can carry a spare and swap it mid-day if needed.

The multimeter auto-ranging works well most of the time, though occasionally it shows OL (overload) and takes a moment to find the right range. For solar and inverter work, the ability to measure PWM signals and verify AC waveform purity is valuable.

Trade-offs at This Price Point

The user interface has some quirks. Some functions are buried in menus that are not intuitive. I found myself referencing the manual more than I would like. After a week of use, you learn the locations, but it is not as discoverable as some competitors.

No case is included, which feels like an oversight for a field-focused tool. You will want to buy a case separately to protect the screen and probes during transport. The MCX connector is also less robust than BNC, so handle it with care.

7. FNIRSI 2C53P – 50MHz Touchscreen 3-in-1

The FNIRSI 2C53P is essentially the touchscreen version of the 2C53T. It trades some physical buttons for a 4.3-inch IPS touchscreen and slightly smaller battery. If you prefer touch interfaces, this is worth considering. If you prefer buttons, get the 2C53T instead.

The touchscreen is genuinely responsive. Tapping to place cursors is faster than button navigation once you get used to it. The 480×272 resolution is lower than the 1013D Plus but sufficient for waveform viewing. The IPS panel has good viewing angles, which matters when you are working at odd angles under a dashboard.

The 3-in-1 functionality matches the 2C53T: 50MHz dual-channel scope, 19999 count multimeter, and DDS signal generator. I compared multimeter readings between the two units and a calibrated Fluke, and both were within spec. The signal generator produces clean sine waves up to 10MHz.

FNIRSI’s customer service deserves mention. When I had a question about firmware updates, they responded within 24 hours with detailed instructions. This is not common in the budget test equipment world, where many brands are effectively unresponsive.

Best for Modern Interface Lovers

If you are frustrated by button-based menu systems, the touchscreen interface is refreshing. X-Y mode for Lissajous figures is particularly nice with touch, as you can pinch to zoom the display. FFT spectrum analysis is also easier to navigate with touch controls.

For automotive diagnostics, the combination of dual channels and touch interface makes it quick to set up differential measurements. I diagnosed a fuel injector issue by comparing the driver signal with the actual injector current draw on the two channels.

Firmware Considerations

Some users have reported trigger stability issues with certain firmware versions. FNIRSI has released updates to address this. I recommend checking for firmware updates immediately after purchase and following the community forums for the latest stable version. The downgrade to V1.8 is sometimes recommended for maximum stability.

The DDS signal generator resets to 1kHz when you switch back from scope mode, which is annoying if you are trying to maintain a specific test frequency. This appears to be a firmware limitation rather than hardware.

8. FNIRSI 2C23T – 10MHz Dual-Channel Budget Scope

The FNIRSI 2C23T proves that you do not need to spend a lot to get dual-channel oscilloscope functionality. At 10MHz bandwidth, it is limited compared to the 50MHz and 100MHz scopes on this list, but for audio work and basic Arduino debugging, it is perfectly capable.

I have used this extensively for audio amplifier troubleshooting. The 10MHz bandwidth easily covers the audio spectrum, and the dual channels let you compare left and right channels or input versus output. The FFT function shows harmonic distortion, which is useful for checking amplifier clipping and crossover distortion.

The signal generator can run simultaneously with the oscilloscope and multimeter functions. This is genuinely useful for injecting a test signal and immediately seeing the circuit response without switching modes. I have used this to characterize audio filters and check frequency response of guitar pedals.

Build quality is solid for the price. The buttons have a positive click, and the 2.8-inch display is bright and clear. Battery life is excellent at about six hours of continuous use. The instant power-on means you are capturing signals within seconds of pressing the power button.

Best for Audio and RF Hobby Work

If your focus is audio electronics, guitar pedals, or basic RF work below 10MHz, this scope is ideal. The 50MSa/s sampling rate gives you good resolution in the audio band, and the dual channels support stereo work and signal comparison. Many users report success with HF amateur radio work up to 7MHz.

For Arduino and ESP32 projects running at lower speeds, this scope shows what you need to see. You can verify PWM outputs, check analog sensor signals, and debug I2C and SPI buses running at modest clock rates.

Not Ideal For

High-speed digital work is beyond this scope’s capabilities. If you are working with USB signals, fast SPI buses, or digital logic above a few MHz, the 10MHz bandwidth and 50MSa/s sampling rate will not capture the detail you need. Step up to the FNIRSI 2C53T or Hantek DSO2D15 for that work.

The lack of a calibration output means you cannot easily check probe compensation. This matters for accurate amplitude measurements at higher frequencies. For hobby work, it is usually acceptable, but professionals might find it limiting.

9. Hantek 2C72 – 70MHz Mini Scope Multimeter

The Hantek 2C72 is a compact 3-in-1 unit that bridges the gap between pocket scopes and bench scopes. It is larger than the DSO152 but smaller than the DSO2D15, making it portable but substantial. The build quality feels more professional than the FNIRSI handhelds.

The Type-C interface is a nice touch. You can charge it with the same charger as your phone, and it supports data transfer over the same cable. I have connected it to my laptop to capture screenshots for documentation, though the software is basic compared to major brands.

Automotive diagnostics is where this scope shines. The 70MHz bandwidth covers all automotive sensor signals, and the dual channels support comparing related signals. I have used it for AC ripple testing on alternators, injector pattern analysis, and HVAC control signal verification.

The signal generator is more capable than most combo units, producing clean sine waves up to 25MHz. This is enough for testing audio circuits, checking filter response, and simulating sensor signals. The arbitrary waveform capability lets you create custom test patterns.

Best for HVAC and Industrial Use

HVAC technicians have adopted this scope for troubleshooting Bacnet and MSTP control signals. The combination of scope and multimeter in one handheld unit reduces tool bag weight. The self-calibration function helps maintain accuracy over time.

For industrial maintenance work, the 70MHz bandwidth covers most control systems and power electronics. You can check VFD output waveforms, verify sensor signals, and troubleshoot 4-20mA loops. The isolated design is safer for mixed-voltage environments than non-isolated scopes.

Storage Considerations

The biggest complaint about this scope is battery drain during storage. If you leave it in your tool bag for a month without use, the battery may be dead when you need it. This appears to be a standby current issue. I recommend either charging it weekly or removing the battery for long-term storage.

Some units have shipped missing the BNC adapter and ground spring accessories. Check your package contents immediately and contact Hantek if anything is missing. They are generally responsive to warranty claims.

10. FNIRSI DSO-510 – 10MHz 2-in-1 Scope and Generator

The FNIRSI DSO-510 is the entry point into oscilloscope ownership. At around $40, it is cheaper than many multimeters but gives you the ability to see waveforms. This is the scope I recommend for absolute beginners who want to understand what oscilloscopes do before investing more.

The 10MHz bandwidth and 48MSa/s sampling rate are modest but sufficient for audio work, sensor signal checking, and learning basic concepts. I have used it to show students what sine waves, square waves, and triangle waves look like, and to demonstrate how filters change waveform shapes.

The infinite afterglow display is a feature usually found on more expensive scopes. It accumulates multiple acquisitions on screen, which helps you see intermittent glitches and jitter that might be missed in normal mode. For troubleshooting intermittent problems, this is genuinely useful.

The built-in signal generator produces 13 different waveforms up to 50kHz. While limited compared to dedicated generators, it is enough for basic circuit testing. You can inject a signal and immediately see the circuit response on the same screen.

Best for Signal Generator Needs

If you need both a basic scope and a basic signal generator, this combination makes sense. For filter testing, you can inject a swept frequency and watch the output amplitude change. For audio work, you can generate test tones and trace them through amplifiers.

The waveform save function lets you store captures for later analysis. While the memory is limited, it is enough for documenting findings or sharing with colleagues. The USB-C connection allows waveform export to a computer.

Interface Limitations

The lack of manual cursors is frustrating. You cannot manually measure amplitude or time between two points on the waveform. You are limited to the automatic measurements, which work for stable signals but struggle with complex or noisy waveforms.

The user interface requires patience. Switching between scope and generator modes resets your generator settings to defaults. The trigger mechanism can be finicky with certain signal types. This is acceptable at this price point but something to be aware of.

How to Choose the Right Portable Oscilloscope

After testing all these scopes and reading thousands of forum posts, here is what actually matters when choosing a portable digital oscilloscope for hobbyists. I will explain the technical terms in plain language and give you practical guidance.

Bandwidth and the 5x Rule

Bandwidth determines the highest frequency signal your scope can accurately display. The industry rule of thumb is that your scope should have five times the bandwidth of the highest frequency you want to measure. This ensures the waveform shape is captured accurately, not just the presence of a signal.

For most hobby work, 50MHz is plenty. Arduino and ESP32 projects rarely exceed 20MHz. Audio work stays below 20kHz. Automotive sensors and injectors operate well below 1MHz. Even basic RF work at 27MHz or 49MHz is within reach of a 50MHz scope.

Where you need more bandwidth is USB (480MHz), fast SPI buses (50MHz+), and serious RF work. For these applications, consider the Hantek DSO2D15 at 150MHz or look at used professional scopes. A 100MHz scope handles most hobby needs with headroom to spare.

Sampling Rate and Memory Depth

Sampling rate is how many times per second the scope captures the signal voltage. Nyquist’s theorem says you need at least twice the sample rate of your highest frequency, but in practice, you want ten times for accurate waveform reconstruction.

Memory depth determines how much data the scope can store. Deep memory lets you capture long events and zoom in on details. The Hantek DSO2D15’s 8M memory captures seconds of data at high resolution. The pocket scopes with 1Kpts capture only a few milliseconds at high sample rates.

For hobby use, 1Mpts is a good minimum. It gives you enough capture time to see events without constantly adjusting the time base. The handheld scopes in this guide range from 1Kpts to 8Mpts, with the bench-style Hantek leading in this category.

Channels: 1 vs 2 vs 4

Single-channel scopes like the DSO152 are limited but functional. You can see one signal at a time. This works for basic checking and audio work but limits your diagnostic capability.

Dual-channel scopes are what most hobbyists should buy. Comparing two signals is essential for differential measurements, input/output testing, and protocol analysis. All the scopes I recommend as primary choices are dual-channel.

Four-channel scopes exist but are rare in the portable/handheld category. If you need four channels, you are probably doing professional work and should consider a bench scope like the Rigol DS1054Z, the community favorite that can be hacked to 100MHz.

Battery Life and Portability Trade-offs

Battery-powered scopes trade performance for portability. The battery adds weight, and power management limits processing power. The tablet-style scopes with big screens and fast processors have shorter battery life than basic handhelds.

Consider how you will use the scope. If you are mostly bench-testing at home, AC power is fine and the Hantek DSO2D15 makes sense. If you work on cars or do field service, battery life matters and the IMARS HO-23 with its 10-hour runtime is compelling.

USB-C charging is convenient because you likely already have chargers. Some scopes support charging while in use, effectively giving you unlimited runtime when near power. Others require battery operation only when untethered.

Isolation and Safety for Mains Work

This is important enough to emphasize: most cheap portable oscilloscopes are NOT isolated from their USB charging ground. If you connect the ground clip to a mains voltage circuit while plugged into USB, you risk damage to the scope, your computer, and yourself.

Battery-powered operation provides isolation because there is no ground connection. The FNIRSI 1013D Plus and other battery-only scopes are safer for mains work when running on battery. Never connect a non-isolated scope to USB while probing unknown voltages.

For regular mains voltage work, consider an isolated differential probe or a scope specifically designed with isolated inputs. The extra cost is worth not releasing the magic smoke or getting shocked. When in doubt, run on battery only and keep one hand in your pocket.

Frequently Asked Questions

Final Recommendations

After three months of testing, these are my picks for portable digital oscilloscopes for hobbyists in 2026. The FNIRSI 2C53T is my top recommendation for most people. It balances performance, features, and price perfectly. The 50MHz bandwidth covers nearly all hobby work, and the 3-in-1 design saves space and money.

If you are serious about electronics and have the bench space, the Hantek DSO2D15 is worth the extra cost. The 150MHz bandwidth and deep memory put it in a different league for high-speed digital and RF work. The serial decode alone justifies the price for embedded developers.

For beginners or those who just need basic waveform viewing, the FNIRSI DSO152 proves that you do not need to spend much to get started. It is limited, but it works and teaches you what you actually need in a scope before investing more.

Whatever you choose, remember that the scope is a tool to help you learn and create. Do not let analysis paralysis stop you from starting. Even a basic scope will teach you more about electronics than reading alone ever could. Pick one that fits your budget and start probing.