--- product_id: 236937092 title: "DSO 138 DIY Oscilloscope Kit Opening Source 2.4\" TFT 1MSPS Pocket-Size Digital Oscilloscope Kit with DIY Parts & Probe, Handheld Pocket Electronic Learning Set, Assembled Vision" brand: "dorhea" price: "SAR 140" currency: SAR in_stock: true reviews_count: 8 url: https://www.desertcart.com.sa/products/236937092-dso-138-diy-oscilloscope-kit-opening-source-2-4-tft store_origin: SA region: Saudi Arabia --- # 1MSPS real-time sampling rate 2.4-inch vibrant TFT color display ARM Cortex-M3 STM32F103C8 processor DSO 138 DIY Oscilloscope Kit Opening Source 2.4" TFT 1MSPS Pocket-Size Digital Oscilloscope Kit with DIY Parts & Probe, Handheld Pocket Electronic Learning Set, Assembled Vision **Brand:** dorhea **Price:** SAR 140 **Availability:** ✅ In Stock ## Summary > ⚡ Pocket oscilloscope, big tech vibes — never miss a signal! ## Quick Answers - **What is this?** DSO 138 DIY Oscilloscope Kit Opening Source 2.4" TFT 1MSPS Pocket-Size Digital Oscilloscope Kit with DIY Parts & Probe, Handheld Pocket Electronic Learning Set, Assembled Vision by dorhea - **How much does it cost?** SAR 140 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/236937092-dso-138-diy-oscilloscope-kit-opening-source-2-4-tft) ## Best For - dorhea enthusiasts ## Why This Product - Trusted dorhea brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Sampling:** 1 million samples per second with 12-bit accuracy captures every waveform detail. - • **Instant Waveform Freeze:** HOLD function lets you pause and analyze signals exactly when it matters. - • **Pocket-Sized Powerhouse:** Compact 2.4" TFT display fits in your palm, perfect for on-the-go diagnostics. - • **DIY & Open Source Friendly:** Partially open-source with programmable MCU—customize and innovate your own features. - • **Comprehensive Waveform Metrics:** Real-time digital readouts of frequency, pulse width, duty cycle, and more for professional insights. ## Overview The DSO 138 DIY Oscilloscope Kit is a handheld, pocket-sized digital oscilloscope featuring a 2.4-inch color TFT display and an ARM Cortex-M3 STM32F103C8 processor. It offers a 1MSPS real-time sampling rate with 12-bit accuracy, multiple trigger modes, waveform freeze, and digital parameter readouts. Designed for electronics enthusiasts and professionals alike, it supports DIY customization through partial open-source firmware, making it a versatile tool for learning, testing, and development. ## Description Specifications: Maximum Real-time Sampling Rate: 1Msps Accuracy: 12Bit Sampling Buffer Depth: 1024 bytes Analog Bandwidth: 0-200KHz Vertical Sensitivity: 10mV / Div - 5V / Div (1-2-5 progressive manner) Input Impedance: 1MΩ Maximum Input Voltage: 50Vpp (1: 1 probe), 400Vpp (10: 1 probe) Coupling Modes: DC / AC / GND The Horizontal Time Base Range: 10μs / Div - 50s / Div (1-2-5 progressive manner) Supply Voltage: DC 9V PCB Size: 117 X 76mm / 4.6 X 3in Screen Size: 52 X 40mm / 2 X 1.57in Tips: Package Included: 1 X DSO 138 digital oscilloscope board 1 X Probe 3 X User Manual(English) ## Features - This DSO 138 oscilloscope circuit boards has been assembled and can be used directly. - This oscilloscope board uses ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display screen, can be used as ARM test development board.Can freeze at any time waveform display (HOLD function).Comes 1Hz /3.3V square wave test signal source. - 2.4" Oscilloscope with automatic, regular and one-shot modes, easy to capture the moment waveform.Available rising or falling edge trigger.Observable previous trigger waveform (negative delay). - 2.4 inch TFT handheld pocket-size digital oscilloscope with waveform parameter digital display, including frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.Waveform storage function: will not lose the waveform after power off. - Partially open-sourced,the MCU has been programmed, adjustable vertical displacement,and with instructions,which increase the likelihood of adding different features or developing new applications on the hardware for users. ## Images ![DSO 138 DIY Oscilloscope Kit Opening Source 2.4" TFT 1MSPS Pocket-Size Digital Oscilloscope Kit with DIY Parts & Probe, Handheld Pocket Electronic Learning Set, Assembled Vision - Image 1](https://m.media-amazon.com/images/I/61noH7SkoYL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ FIVE Stars... With Some Caveats... *by A***Y on April 4, 2022* I have had my DS0138 Digital Oscilloscope for a while, but did not use it as much as would have liked to, because I was always afraid of accidentally shorting out the exposed PC board. Finally I figured someone made a case for it, which brought me to this. The finished product is spectaular! Clear acrylic that still shows the inner workings and allows access to all of the necessary connections.In my opinion here are the up and down sides of this DIY case kit:PROS:- Beautifully precision cut acrylic pieces.- When assembled, VERY solid and attractive.- External access to every necessary connection, including both power connections, the input connector, test point, and programming jack.- Extra button/switch extenders (to compensate for the one you will inevitably drop :)- Reasonably priced.CONS:- Because it IS precision cut, a patient steady hand is required. Don't drink a gallon of coffee before attempting to assemble this kit- If you have poor eyesight, lots of light is recommended. Clear acrylic is hard to see in low light!- Removing the paper from the acylic sucks, but it always does.- You may need a pointed tool, such as a toothpick or small screwdriver to line the push buttons up for the final assembly of the top piece. I used a sharp-pointed pair of soldering tweezers.- Care should be taken when removing the protective paper from the acryic. I did break one piece near one of the thinner cuts. Fortunately is was an internal "shim" piece and was not vital to the structual soundness.- The assembly instructions are not included. Rather, ther are availble here on the Amazon listing, shows 4 small acorn nuts for the top, to give it a smoother, more finished look. The kit only included regular hex nuts. They still work fine, but are not as aestheticly pleasing.- There is a whole set of TINY bolts and nut included, that I found no use for, nor did the assembly instructions say anything about them. They appear to not be needed, as my scope is solid as a rock.- DO NOT over tighten the nuts that hold the top piece on. This will cause the top piece to warp just enough that one of more of the control buttons will not depress correctly. Remember: precision cut!It took me about 75 minutes to put this together, mainly because I have bad eyes and low patience threshold. Once it is complete, though, it is beautiful. For the price, it is a good bargain! God speed, fellow DIYers... ### ⭐⭐⭐⭐ Tricky *by B***T on July 12, 2025* This case works, but it's tricky to assemble correctly. Read the other reviews to see how it goes together. It might take one or two iterations to get it put together so all the buttons work right and nothing is being bent or stretched. ### ⭐⭐⭐⭐⭐ A toy that actually does some work. *by R***E on September 7, 2025* You'd think this little kit was a toy. It is, but it does more than you'd expect. How do they ever make it for a price like this? --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/236937092-dso-138-diy-oscilloscope-kit-opening-source-2-4-tft](https://www.desertcart.com.sa/products/236937092-dso-138-diy-oscilloscope-kit-opening-source-2-4-tft) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-06-03*