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DSO138 2.4" TFT Handheld Pocket-Size Digital Oscilloscope Kit
Your affordable entry into signal analysis - a compact, feature-packed digital oscilloscope perfect for electronics enthusiasts, students, and bench technicians.
Premium electronics from The Engineer Store, Bengaluru. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.
Product Overview
The DSO138 is a pocket-sized digital oscilloscope built around a bright 2.4-inch TFT color display, offering real-time waveform visualization in an incredibly compact and affordable package. Based on the ARM Cortex-M3 processor (STM32F103C8), this handheld scope delivers genuine measurement capability for debugging circuits, analyzing signals, and learning oscilloscope fundamentals without the bulk or cost of a full bench instrument. Whether you're probing audio circuits, verifying PWM outputs from a microcontroller, or teaching electronics in a classroom, the DSO138 puts essential diagnostic power right in your hand.
Specifications
| Parameter | Detail |
| Display | 2.4-inch TFT LCD, 320 x 240 pixels, full color |
| Processor | ARM Cortex-M3 (STM32F103C8) |
| Analog Bandwidth | 0 - 200 kHz |
| Sampling Rate | 1 Msps (mega samples per second) |
| Sensitivity | 10 mV/div - 5 V/div |
| Input Impedance | 1 MOhm |
| Maximum Input Voltage | 50 Vpp (with 1x probe) |
| Timebase Range | 10 us/div - 500 s/div |
| Coupling Modes | DC / AC / GND |
| Trigger Modes | Auto, Normal, Single |
| Trigger Types | Rising edge / Falling edge |
| Waveform Measurements | Frequency, cycle time, duty cycle, Vpp, Vavg, Vmax, Vmin |
| Buffer Depth | 1024 samples |
| Power Supply | 9 V DC (via barrel jack or onboard header) |
| Current Consumption | ~120 mA |
| PCB Dimensions | Approx. 117 mm x 76 mm |
| Weight | ~100 g (assembled, without case) |
| Type | Digital Oscilloscope Kit / Assembled Module |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- 2.4-Inch Color TFT Display - Sharp, vibrant screen renders waveforms with a clear grid, making it easy to read signals even in bright environments.
- 1 Msps Real-Time Sampling - Captures waveforms up to 200 kHz bandwidth, suitable for audio, low-speed digital, and power supply analysis.
- Comprehensive Auto-Measurements - On-screen readout of frequency, period, duty cycle, peak-to-peak voltage, and average voltage eliminates manual calculations.
- Multiple Trigger Options - Auto, Normal, and Single-shot trigger modes with selectable rising or falling edge let you lock onto repetitive or one-time events.
- Adjustable Sensitivity & Timebase - Wide vertical range (10 mV/div to 5 V/div) and horizontal range (10 us/div to 500 s/div) cover a broad variety of signals.
- AC / DC / GND Coupling - Switch coupling modes to isolate AC components, view full DC+AC signals, or set a ground reference baseline.
- ARM Cortex-M3 Processing - The powerful STM32F103C8 microcontroller ensures responsive controls, fast screen refresh, and accurate measurements.
- Pocket-Sized & Portable - Lightweight PCB form factor fits in a shirt pocket or tool bag, ideal for field diagnostics and mobile workbenches.
- Low Power Consumption - Draws only ~120 mA at 9 V, making battery-powered portable operation practical with a standard 9 V battery or power bank with boost converter.
- Open-Source Firmware - Community-supported firmware allows customization, feature additions, and educational exploration of embedded DSP concepts.
Why Choose the DSO138?
| Benefit | Details |
| 100% Authentic | Sourced directly from trusted, authorized suppliers - every unit verified for quality |
| Unbeatable Value | Full oscilloscope functionality at a fraction of the cost of bench instruments |
| Fast Shipping | 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse |
| Expert Technical Support | Dedicated assistance via email and WhatsApp around the clock |
| Learning-Friendly | Ideal for students and beginners to understand oscilloscope operation hands-on |
| Compact & Portable | Take real measurement capability anywhere - lab, classroom, or field |
Project Ideas & Applications
Circuit Debugging & Repair
Use the DSO138 to probe power rails, verify clock signals, and trace faults in Arduino, ESP32, Raspberry Pi, and other microcontroller circuits. Quickly identify noise, voltage drops, or unexpected signal behavior on your breadboard or PCB.
Electronics Education & Lab Work
An outstanding teaching tool for engineering colleges and maker spaces. Students can visualize AC/DC waveforms, understand frequency and amplitude, learn trigger concepts, and practice real measurement techniques without risking expensive lab equipment.
Audio Signal Analysis
Visualize audio waveforms from amplifiers, mixers, guitar pedals, and synthesizers. Check for clipping, distortion, or signal integrity issues. The 200 kHz bandwidth comfortably covers the entire audible spectrum and beyond.
Power Supply Testing
Monitor ripple voltage on DC power supplies, verify PWM dimming signals for LED drivers, and check switching waveforms on buck/boost converters. The DC coupling mode and adjustable sensitivity make power analysis straightforward.
###Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DSO138 2.4 TFT Handheld Pocket-size D Online in India
Purchase the DSO138 2.4 TFT Handheld Pocket-size D online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DSO138 2.4 TFT Handheld Pocket-size D with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DSO138 2.4 TFT Handheld Pocket-size D at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
DSO138 2.4" TFT Handheld Pocket-Size Digital Oscilloscope Kit
Your affordable entry into signal analysis - a compact, feature-packed digital oscilloscope perfect for electronics enthusiasts, students, and bench technicians.
Premium electronics from The Engineer Store, Bengaluru. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.
Product Overview
The DSO138 is a pocket-sized digital oscilloscope built around a bright 2.4-inch TFT color display, offering real-time waveform visualization in an incredibly compact and affordable package. Based on the ARM Cortex-M3 processor (STM32F103C8), this handheld scope delivers genuine measurement capability for debugging circuits, analyzing signals, and learning oscilloscope fundamentals without the bulk or cost of a full bench instrument. Whether you're probing audio circuits, verifying PWM outputs from a microcontroller, or teaching electronics in a classroom, the DSO138 puts essential diagnostic power right in your hand.
Specifications
| Parameter | Detail |
| Display | 2.4-inch TFT LCD, 320 x 240 pixels, full color |
| Processor | ARM Cortex-M3 (STM32F103C8) |
| Analog Bandwidth | 0 - 200 kHz |
| Sampling Rate | 1 Msps (mega samples per second) |
| Sensitivity | 10 mV/div - 5 V/div |
| Input Impedance | 1 MOhm |
| Maximum Input Voltage | 50 Vpp (with 1x probe) |
| Timebase Range | 10 us/div - 500 s/div |
| Coupling Modes | DC / AC / GND |
| Trigger Modes | Auto, Normal, Single |
| Trigger Types | Rising edge / Falling edge |
| Waveform Measurements | Frequency, cycle time, duty cycle, Vpp, Vavg, Vmax, Vmin |
| Buffer Depth | 1024 samples |
| Power Supply | 9 V DC (via barrel jack or onboard header) |
| Current Consumption | ~120 mA |
| PCB Dimensions | Approx. 117 mm x 76 mm |
| Weight | ~100 g (assembled, without case) |
| Type | Digital Oscilloscope Kit / Assembled Module |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- 2.4-Inch Color TFT Display - Sharp, vibrant screen renders waveforms with a clear grid, making it easy to read signals even in bright environments.
- 1 Msps Real-Time Sampling - Captures waveforms up to 200 kHz bandwidth, suitable for audio, low-speed digital, and power supply analysis.
- Comprehensive Auto-Measurements - On-screen readout of frequency, period, duty cycle, peak-to-peak voltage, and average voltage eliminates manual calculations.
- Multiple Trigger Options - Auto, Normal, and Single-shot trigger modes with selectable rising or falling edge let you lock onto repetitive or one-time events.
- Adjustable Sensitivity & Timebase - Wide vertical range (10 mV/div to 5 V/div) and horizontal range (10 us/div to 500 s/div) cover a broad variety of signals.
- AC / DC / GND Coupling - Switch coupling modes to isolate AC components, view full DC+AC signals, or set a ground reference baseline.
- ARM Cortex-M3 Processing - The powerful STM32F103C8 microcontroller ensures responsive controls, fast screen refresh, and accurate measurements.
- Pocket-Sized & Portable - Lightweight PCB form factor fits in a shirt pocket or tool bag, ideal for field diagnostics and mobile workbenches.
- Low Power Consumption - Draws only ~120 mA at 9 V, making battery-powered portable operation practical with a standard 9 V battery or power bank with boost converter.
- Open-Source Firmware - Community-supported firmware allows customization, feature additions, and educational exploration of embedded DSP concepts.
Why Choose the DSO138?
| Benefit | Details |
| 100% Authentic | Sourced directly from trusted, authorized suppliers - every unit verified for quality |
| Unbeatable Value | Full oscilloscope functionality at a fraction of the cost of bench instruments |
| Fast Shipping | 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse |
| Expert Technical Support | Dedicated assistance via email and WhatsApp around the clock |
| Learning-Friendly | Ideal for students and beginners to understand oscilloscope operation hands-on |
| Compact & Portable | Take real measurement capability anywhere - lab, classroom, or field |
Project Ideas & Applications
Circuit Debugging & Repair
Use the DSO138 to probe power rails, verify clock signals, and trace faults in Arduino, ESP32, Raspberry Pi, and other microcontroller circuits. Quickly identify noise, voltage drops, or unexpected signal behavior on your breadboard or PCB.
Electronics Education & Lab Work
An outstanding teaching tool for engineering colleges and maker spaces. Students can visualize AC/DC waveforms, understand frequency and amplitude, learn trigger concepts, and practice real measurement techniques without risking expensive lab equipment.
Audio Signal Analysis
Visualize audio waveforms from amplifiers, mixers, guitar pedals, and synthesizers. Check for clipping, distortion, or signal integrity issues. The 200 kHz bandwidth comfortably covers the entire audible spectrum and beyond.
Power Supply Testing
Monitor ripple voltage on DC power supplies, verify PWM dimming signals for LED drivers, and check switching waveforms on buck/boost converters. The DC coupling mode and adjustable sensitivity make power analysis straightforward.
###Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DSO138 2.4 TFT Handheld Pocket-size D Online in India
Purchase the DSO138 2.4 TFT Handheld Pocket-size D online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DSO138 2.4 TFT Handheld Pocket-size D with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DSO138 2.4 TFT Handheld Pocket-size D at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.